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Hox et al. Clin Transl Allergy (2020) 10:1 https://doi.org/10.1186/s13601-019-0303-6 REVIEW Benefits and harm of systemic steroids for short- and long-term use in rhinitis and rhinosinusitis: an EAACI position paper Valerie Hox 1* , Evelijn Lourijsen 2 , Arnout Jordens 3 , Kristian Aasbjerg 4 , Ioana Agache 5 , Isam Alobid 6,7 , Claus Bachert 3,8 , Koen Boussery 9 , Paloma Campo 10 , Wytske Fokkens 2 , Peter Hellings 11 , Claire Hopkins 12 , Ludger Klimek 13 , Mika Mäkelä 14 , Ralph Mösges 15 , Joaquim Mullol 6 , Laura Pujols 6 , Carmen Rondon 10 , Michael Rudenko 16 , Sanna Toppila‑Salmi 14 , Glenis Scadding 17 , Sophie Scheire 9 , Peter‑Valentin Tomazic 18 , Thibaut Van Zele 3 , Martin Wagenmann 19 , Job F. M. van Boven 20 and Philippe Gevaert 3 Abstract Because of the inflammatory mechanisms of most chronic upper airway diseases such as rhinitis and chronic rhinosi‑ nusitis, systemic steroids have been used for their treatment for decades. However, it has been very well documented that—potentially severe—side‑effects can occur with the accumulation of systemic steroid courses over the years. A consensus document summarizing the benefits of systemic steroids for each upper airway disease type, as well as highlighting the potential harms of this treatment is currently lacking. Therefore, a panel of international experts in the field of Rhinology reviewed the available literature with the aim of providing recommendations for the use of systemic steroids in treating upper airway disease. Keywords: Glucocorticosteroids, Rhinitis, Rhinosinusitis © The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativeco mmons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/ zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. Introduction Chronic upper airway inflammation is one of the most prevalent chronic disease entities in the world with rhi- nitis being the most common presentation form affecting 30% of the Western population [1]. Rhinitis is defined as an inflammation of the lining of the nose and is characterized by nasal symptoms includ- ing rhinorrhoea, sneezing, nasal blockage and/or itch- ing of the nose. Allergic rhinitis (AR) is the best-known form of non-infectious rhinitis and is associated with an IgE-mediated immune response against allergens [1]. However, a substantial group of rhinitis patients has no known allergy and they form a very heterogeneous non- allergic rhinitis (NAR) patient population suffering from drug-induced rhinitis, occupational rhinitis, irritant- induced rhinitis, hormonally linked rhinitis and idiopathic rhinitis [2, 3]. When inflammation of the nasal mucosa extends to the mucosa of the paranasal sinuses, the con- sensus term of rhinosinusitis is used. Rhinosinusitis has been shown to affect about 10% of the Western popula- tion [4]. In addition to rhinitis symptoms, rhinosinusitis is characterized by postnasal drip, facial pressure and reduction or loss of smell [5]. Acute rhinosinusitis (ARS) is a very common condition and mostly of viral origin [5]. About 0.5–2% of the viral ARS are complicated by a bac- terial infection [5]. Chronic rhinosinusitis (CRS) is defined as the pres- ence of two or more nasal symptoms, one of which should be either nasal blockage or nasal discharge, and/ or smell problems, and/or facial pain for more than 12 weeks, in combination with inflammatory signs con- firmed by nasal endoscopy and/or CT scan. CRS can Open Access *Correspondence: [email protected] 1 Cliniques Universitaires Saint‑Luc Brussels, Av. Hippocrate 10, 1200 Brussels, Belgium Full list of author information is available at the end of the article Clinical and Translational Allergy

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  • Hox et al. Clin Transl Allergy (2020) 10:1 https://doi.org/10.1186/s13601-019-0303-6

    REVIEW

    Benefits and harm of systemic steroids for short- and long-term use in rhinitis and rhinosinusitis: an EAACI position paperValerie Hox1* , Evelijn Lourijsen2, Arnout Jordens3, Kristian Aasbjerg4, Ioana Agache5, Isam Alobid6,7, Claus Bachert3,8, Koen Boussery9, Paloma Campo10, Wytske Fokkens2, Peter Hellings11, Claire Hopkins12, Ludger Klimek13, Mika Mäkelä14, Ralph Mösges15, Joaquim Mullol6, Laura Pujols6, Carmen Rondon10, Michael Rudenko16, Sanna Toppila‑Salmi14, Glenis Scadding17, Sophie Scheire9, Peter‑Valentin Tomazic18, Thibaut Van Zele3, Martin Wagenmann19, Job F. M. van Boven20 and Philippe Gevaert3

    Abstract Because of the inflammatory mechanisms of most chronic upper airway diseases such as rhinitis and chronic rhinosi‑nusitis, systemic steroids have been used for their treatment for decades. However, it has been very well documented that—potentially severe—side‑effects can occur with the accumulation of systemic steroid courses over the years. A consensus document summarizing the benefits of systemic steroids for each upper airway disease type, as well as highlighting the potential harms of this treatment is currently lacking. Therefore, a panel of international experts in the field of Rhinology reviewed the available literature with the aim of providing recommendations for the use of systemic steroids in treating upper airway disease.

    Keywords: Glucocorticosteroids, Rhinitis, Rhinosinusitis

    © The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creat iveco mmons .org/licen ses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creat iveco mmons .org/publi cdoma in/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

    IntroductionChronic upper airway inflammation is one of the most prevalent chronic disease entities in the world with rhi-nitis being the most common presentation form affecting 30% of the Western population [1].

    Rhinitis is defined as an inflammation of the lining of the nose and is characterized by nasal symptoms includ-ing rhinorrhoea, sneezing, nasal blockage and/or itch-ing of the nose. Allergic rhinitis (AR) is the best-known form of non-infectious rhinitis and is associated with an IgE-mediated immune response against allergens [1]. However, a substantial group of rhinitis patients has no known allergy and they form a very heterogeneous non-allergic rhinitis (NAR) patient population suffering from

    drug-induced rhinitis, occupational rhinitis, irritant-induced rhinitis, hormonally linked rhinitis and idiopathic rhinitis [2, 3]. When inflammation of the nasal mucosa extends to the mucosa of the paranasal sinuses, the con-sensus term of rhinosinusitis is used. Rhinosinusitis has been shown to affect about 10% of the Western popula-tion [4]. In addition to rhinitis symptoms, rhinosinusitis is characterized by postnasal drip, facial pressure and reduction or loss of smell [5]. Acute rhinosinusitis (ARS) is a very common condition and mostly of viral origin [5]. About 0.5–2% of the viral ARS are complicated by a bac-terial infection [5].

    Chronic rhinosinusitis (CRS) is defined as the pres-ence of two or more nasal symptoms, one of which should be either nasal blockage or nasal discharge, and/or smell problems, and/or facial pain for more than 12 weeks, in combination with inflammatory signs con-firmed by nasal endoscopy and/or CT scan. CRS can

    Open Access

    *Correspondence: [email protected] Cliniques Universitaires Saint‑Luc Brussels, Av. Hippocrate 10, 1200 Brussels, BelgiumFull list of author information is available at the end of the article

    Clinical andTranslational Allergy

    http://orcid.org/0000-0003-2390-294Xhttp://creativecommons.org/licenses/by/4.0/http://creativecommons.org/licenses/by/4.0/http://creativecommons.org/publicdomain/zero/1.0/http://creativecommons.org/publicdomain/zero/1.0/http://crossmark.crossref.org/dialog/?doi=10.1186/s13601-019-0303-6&domain=pdf

  • Page 2 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    either present with nasal polyps (CRSwNP) or without (CRSsNP). Additionally, chronic upper airway disease often coexists with lower airway problems, most fre-quently asthma, but also a link with chronic obstruc-tive pulmonary disease (COPD) and bronchiectasis has been reported [6].

    Glucocorticosteroids (GCS) are the oldest and most widely used anti-inflammatory therapy. Since their introduction in the 1950s, GCS have played a key role in the treatment of various inflammatory, allergic, and immunologic disorders. Consequently, they are known as a very effective drug for treating chronic airway inflammatory diseases involving both lower as well as upper airways [1, 4, 7]. GCS can be administered topi-cal or systemically. If possible topical GCS are preferred over systemic GCS treatment as it is well known that this systemic GCS treatment is linked to an extensive range of potential adverse effects (AE’s) that have been well-described in the literature and vary from uncom-fortable to life-threatening [8]. Notably, reports on AE and/or toxicity of systemic GCS cover a heterogeneous group of GCS-treated diseases, which complicates the interpretation of the actual risk for the rhinitis/rhinosi-nusitis patients.

    Therefore, the risk–benefit ratio of treating non-life-threatening upper airway diseases with systemic GCS remains debatable and needs clarification.

    This document summarizes the current evidence for beneficial as well as harmful effects of administration of systemic GCS in the different types of upper airway disease and aims at providing recommendations about its use in rhinitis and rhinosinusitis based on the cur-rent evidence. For each topic 2 experts in the field were appointed to review the literature and topics that were appropriate for clinical recommendations were consid-ered as evidence-based reviews with recommendations. The experts then provided a recommendation based upon the guidelines of the American Academy of Pedi-atrics (following the recommendation strategy used by the International Consensus on Allergy and Rhinology [9]). Table  1 summarizes the recommendation devel-opment based on the combination between levels of

    evidence and the benefit/harm balance. Generally, the search was focused on adults. Two experts reviewed the literature specifically for the pediatric population.

    The search was performed in the MEDLINE (Ovid 1946—current; and PubMed 1966—current) and Cochrane databases. The search strategy was based on a combination of MeSH-terms and free text words. Search terms are listed in Additional file 1.

    Mechanisms and actions of GCSCorticosteroids, which are produced by the adrenal glands, can be classified as glucocorticoids and mineralo-corticoids. Cortisol is the endogenous glucocorticoid in humans, naturally derived from cholesterol metabolism upon stimulation by the hypothalamic–pituitary–adrenal axis (Fig. 1), which is regulated initially by the circadian rhythm, but also by negative feedback by glucocorticoids and glucocorticoid increment induced by stressors such as pain, inflammation or infections [10].

    GCS are involved in several physiologic functions. They control the metabolism of carbohydrates, proteins and lipids, as well as the balance of calcium [11, 12]. However, the most explored effects of GCS are the anti-inflamma-tory and immune-suppressive functions. GCS inhibit the activation and survival of inflammatory cells and modu-late the activity of structural cells [13, 14]. The main anti-inflammatory effects of GCS are based on their ability to reduce the synthesis of several cytokines (IL-1, -2, -3, -4, -5, -6, -8, TNF-α, IFN-γ, GM-CSF) from many cells (macrophages, monocytes, lymphocytes, fibroblasts, and epithelial and endothelial cells). This affects recruitment, localization, protein synthesis, and survival of inflam-matory cells such as eosinophils [15]. The recruitment of inflammatory cells is also diminished by an inhibited expression of adhesion molecules such as ICAM-1 and VCAM-1 [16], which affects the influx of basophils and mast cells in the epithelial layers of nasal mucosa. Finally, GCS are involved in the pathological wound repair mechanism called remodelling. Remodelled tissue such as the stroma of nasal polyps contains abundant infiltra-tion of inflammatory cells, increased fibroblasts numbers and increased extra-cellular matrix deposition. However,

    Table 1 American Academy of Pediatrics defined strategy for recommendation development [9]

    RCT randomized controlled trial

    Evidence quality Preponderance of benefit over harm

    Balance of benefit and harm

    Preponderance of harm over benefit

    A. Well‑designed RCTs Strong recommendation Option Strong recommendation againstB. RCT’s with minor limitations; overwhelming consistent evi‑

    dence from observational studiesRecommendation

    C. Observational studies (case–control and cohort design) Recommendation against

    D. Expert opinion; case reports; reasoning from first principles Option No recommendation

  • Page 3 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    GCS appear to be minimally effective in reversing the structural changes resulting from remodelling [17].

    All these effects are exerted by intracellular activa-tion of the glucocorticoid receptor (GR) [18]. The GR belongs to the superfamily of ligand regulated nuclear receptors [19] and alternative splicing of the GR primary transcript generates two receptor isoforms, named GRα and GRβ. GRα has a widespread distribution in cells and

    tissues [20], including healthy and diseased upper airway mucosa. Inactive GRα is found primarily in the cytoplasm of cells as part of a large multi-protein complex [21]. Glu-cocorticoids diffuse across the cell membrane and bind to GRα resulting in a nuclear entry (Fig. 2) [22] where GRβ modulates either positively or negatively the expression of target genes. GRβ has a very low level of expression

    Fig. 1 The hypothalamic–pituitary–adrenal axis. Stress stimuli induce the production of CRH by the hypothalamus. CRH induces the production of ACTH by the pituitary gland which stimulates the production of glucocorticoids (cortisol) in the adrenal gland cortex. Cortisol acts on many cells, tissues, and organs including the immune system. The excessive release of cortisol as well as proinflammatory cytokines have a negative feedback on the central nervous system by inhibiting this circadian cycle. CRH corticotrophin releasing hormone, ACTH adrenocorticotrophin hormone

  • Page 4 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    compared to GRα [20] and acts mainly as a negative inhibitor of GRα-mediated gene modulation [23].

    The anti-inflammatory effects of GCS are explained by three broad molecular mechanisms: the decreased expression of pro-inflammatory genes (trans-repression), the increased expression of anti-inflammatory genes (trans-activation), and non-genomic mechanisms. Trans-repression is thought to be mainly due to direct interac-tions between GRα and pro-inflammatory transcription factors such as the activator protein-1 (AP-1) and NF-κB [24]. Trans-activation is explained by the interaction of GRα to specific target DNA sequences, named gluco-corticoid-responsive elements (GRE). Among the genes activated by GRα through GRE with anti-inflammatory functions, there are the mitogen activated protein kinase phosphatase-1, the glucocorticoid inducible leucine zip-per and tristetraprolin. In addition, the activated GRα can also reduce inflammation at the post-transcriptional (altering mRNA stability), translational (affecting protein synthesis) and post-translational levels (altering protein processing, modification or degradation) (Fig.  2). For example, the expression of cyclooxygenase-2, TNF-α

    and GM-CSF are regulated by one or more of these post-genomic mechanisms [25].

    Increased expression of GRβ has been reported in dif-ferent inflammatory diseases, including asthma, and nasal polyposis and has been proposed as one of the potential mechanisms explaining GC resistance [26]. The expression of GRβ is higher in nasal polyps than in nasal mucosa epithelial cells and correlates with increased infiltration of inflammatory cells [27]. Although down-regulation of GRα after treatment with glucocorticoids has been reported [28] and could account for secondary steroid resistance, a recent study in patients in patients with nasal polyps has shown that this effect does not occur in vivo [29].

    Evidence for efficacy of systemic GCS in different inflammatory upper airway diseases1. Allergic rhinitisAR is the most prevalent presentation form of all allergic diseases and the most com-mon chronic disorder in chil-dren. It is considered a risk factor for the development of asthma and a major public health problem, due to its

    Fig. 2 Molecular mechanisms of glucocorticoid action. After crossing the cell membrane by passive diffusion, glucocorticoids bind to GRα, associated heat‑shock proteins (HSP) are released, and the ligand bound receptor translocates into the nucleus. Through the activation of MAP kinase (MAPKs) intracellular cascade, inflammatory stimuli induce the production of transcription factors. A GRα dimer can bind glucocorticoid responsive elements (GRE) on the promoter region of target genes and activate anti‑inflammatory gene (MKP‑1, GILZ, TTP, lipocortin‑1) transcription. B Binding of GRα to a negative GRE (nGRE) leads to gene (POMC, osteocalcin) repression. C Protein–protein interactions between GRα and transcription factors (AP‑1, NF‑κB) repress the transcription of pro‑inflammatory genes (COX‑2, TNF‑α, VEGF, IL‑8). D GRα can alter mRNA or protein stability of inflammatory mediators

  • Page 5 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    prevalence and impact on patients’ quality of life, work/school performance, and economic burden [30].

    Intranasal GCS and oral/topical antihistamines are the most effective symptomatic treatment for AR and should be the first-line therapy for mild to moderate disease [30, 31]. Moderate to severe disease not responsive to intra-nasal GCS, should be treated with additional pharmaco-logical therapies (including cromolyns and leukotriene receptor antagonists), allergen immunotherapy (AIT) and non-pharmacologic therapies (such as nasal irriga-tion) [30, 31]. Usually a combination of intranasal GCS and a topical or oral antihistamine is used for moderate to severe AR.

    Regarding the use of systemic GCS in AR, the current evidence is scarce. Three studies compared the effect of systemic GCS in adult patients (> 15  year old) with AR (Table 2).

    The first randomized controlled trial (RCT) from 1987 showed a beneficial effect of a depot injection of 80 mg methylprednisolone (MP) vs. placebo on nasal obstruc-tion and eye symptoms in 48 AR patients, which lasted for 4 weeks [32]. The second study by Brooks et al. [33] investigated the efficacy of different doses of oral MP and placebo in patients not treated with other medica-tions. Thirty-one patients were randomized to receive 0, 6, 12, or 24 mg MP. Oral GCS produced dose-related reduction in all symptoms. The difference between pla-cebo and 24 mg MP was significant for all the symptoms monitored, except itching, which benefited marginally. With 6 mg MP, congestion, drainage, and eye symptoms showed significant drug-placebo differences, but itching, running/blowing, and sneezing did not. The third study by Laursen et  al. [34] compared prednisone 7.5  mg for 3  weeks with a single intramuscular injection of beta-methasone dipropionate also in patients not treated with other medications. This study showed a therapeutic index in favour of the depot injection versus oral treatment in AR [33].

    Despite the therapeutic benefits of systemic GCS in the treatment of AR that were shown in these studies, their use is strongly recommended against in view of the AE’s GCS that are discussed below, and a short course of systemic GCS is only indicated in rare cases. These cases include patients with severe symptoms who do not respond to other drugs, or those who are intolerant to intranasal drugs [1, 35]. Systemic GCS should never be considered as a first-line of treatment for AR [1]. Con-sequently, oral GCS can be used for a few days as in carefully selected cases when other medical treatment options have failed.

    • Evidence level: B.

    • Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value, except for patients suffering from very severe and therapy-resistant symptoms.

    • Recommendation: Strong recommendation against. Option in patients suffering from very severe and therapy-resistant symptoms.

    2. Non‑allergic rhinitisAlthough, the prevalence of NAR among the chronic rhinitis patients ranges from 20 to 50% [36], their dis-ease mechanisms and treatment options are much less studied than their allergic peers. NAR comprises a het-erogeneous group of chronic rhinitis subtypes, such as drug-induced rhinitis, hormonal-induced rhinitis, some forms of occupational rhinitis and rhinitis linked to sys-temic diseases [37]. However, in about 50% of the NAR patients, no specific causal factor can be found and this is addressed as idiopathic rhinitis (IR) [37]. Up till now, no studies are available that investigate the effectiveness of systemic steroids in NAR or IR patients. However, since it is believed that in IR neurogenic pathways are involved, rather than classical inflammatory pathways [38], sys-temic GCS are not the therapy of choice. Of note, all IR patients included in a recent study investigating the effect of capsaicin in IR, reported lack of clinical response to intranasal GCS [38]. By extrapolation, there is a low like-lihood of oral GCS being effective in this patient popu-lation, unless more than one etiologic or inflammatory mechanism underlies the development of rhinitis.

    Only in selected cases of other subtypes of NAR, such as rhinitis linked to vasculitic or systemic diseases, oral GCS might play a role in the treatment strategy (see below) [39]. Although oral GCS are often prescribed in patients suffering from rhinitis medicamentosa to over-come the withdrawal period of topical decongestants, there are no valuable studies supporting this clinical practice.

    • Evidence level: D.• Benefits–harm assessment: AE’s of systemic GCS

    outweigh advantages of therapeutic value.• Recommendation: Recommendation against.

    3. Acute rhinosinusitisCompared to the literature on effectiveness of systemic GCS in CRS, data on acute rhinosinusitis (ARS) are scarce. In 2014 an update of a Cochrane review was pub-lished [40] concluding that systemic GCS as a monother-apy are ineffective compared to placebo in ARS patients,

  • Page 6 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 2

    Sum

    mar

    y of

     the 

    evid

    ence

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    effica

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     adu

    lts’

    RCT

    rand

    omiz

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    ontr

    olle

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    ial,

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    met

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    alle

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    oups

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    ‑poi

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    cyCo

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    1987

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    T 1.

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    (n =

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    80

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    MP

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  • Page 7 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    but might have a beneficial effect on short-term symptom relief when used as an adjunctive therapy to antibiotics.

    Up to date, five randomized, placebo-controlled trials investigating the effect of oral GCS in adults with ARS are available and included in the Cochrane meta-analysis (Table 3). From those, only one focused on systemic GCS as a monotherapy [41]. In this high-quality second-line clinical trial, patients with clinically diagnosed ARS were randomized to receive either prednisolone 30 mg/day or placebo for 7  days. In the 174 patients who completed the trial, no clinically relevant benefit of prednisolone over placebo was found regarding facial pain or pressure, other nasal symptoms or quality of life.

    Four other RCTs investigated the adjunctive effect of systemic GCS to oral antibiotics in ARS. Gehanno et al. [42] reported the adjuvant effect of 5  days of 3 × 8  mg MP/day to amoxicillin–clavulanate in 417 patients. On day four, patients showed significantly less pain in the steroid group whereas nasal discharge did not signifi-cantly improve. The use of additional medication was not reported.

    In 2004, two similar studies were published; a French study [43] showed a beneficial effect on pain with oral prednisone as an add-on therapy to cefpodoxime in 291 ARS patients. Also Ratau et al. [44] reported a significant benefit of 1 mg of oral betamethasone per day as adjunct to amoxicillin–clavulanate in 42 patients.

    In 1990 Cannoni already published similar findings showing a better symptom resolution in ARS patients treated with 40  mg prednisolone/day in combination with antibiotics, compared to patients receiving a non-steroidal anti-inflammatory drug (NSAID) with antibiot-ics [45].

    Altogether, these limited data suggest that systemic GCS as a monotherapy appear to be ineffective in ARS patients. However, oral GCS in combination with antibi-otics may be modestly beneficial for short-time symptom relief in adults suffering from ARS, compared to antibiot-ics alone, with a number needed to treat of seven [40]. Due to the small number of included studies (n = 5) and their methodological bias, a definite conclusion would only be justified if large controlled trials would be avail-able. Given the self-limiting nature of ARS, the rela-tively small additional clinical benefit of adding GCS to antibiotics, and the potential AE’s, GCS should not be used routinely, but may be considered an option after informed discussion and shared decision making with the patient in the setting of severe pain.

    • Evidence level: B.• Benefits–harm assessment: AE’s of systemic GCS

    outweigh advantages of therapeutic value in mild and moderate disease.

    • Recommendation: Strong recommendation against when only mild to moderate symptoms. Option in patients suffering from severe headaches/symp-toms when combined with antibiotics.

    4. Chronic rhinosinusitis without nasal polypsFor clinical purposes, the definition of CRS includes nasal polyposis (NP) and currently it is still unclear why some CRS patients develop NP and others do not. CRSsNP is characterized by basement membrane thickening, goblet cell hyperplasia, fibrosis, subepithe-lial oedema and influx of inflammatory cells that are mainly of the neutrophilic subtype with a cytokine pat-tern deviated towards the Th1 subtype [5].

    Based on available data, medical therapy for CRS should begin with daily application of intranasal ster-oids in conjunction with saline irrigation and subse-quent therapies are based on the patient’s severity of symptoms and/or quality of life impairment [4].

    There is limited data showing efficacy of oral GCS in CRSsNP and a systematic review analysed the available literature in 2011 [46].

    No RCT investigated the effects of oral GCS in CRSsNP and only two retrospective case series in adults are available [47, 48] that both considered CRSwNP and CRSsNP patients, but sub-group analy-sis allowed an evaluation specific to CRSsNP (Table 4). Both retrospective studies investigated the effects of oral prednisone in conjunction with 1  month of oral antibiotics added to intranasal steroids and irrigations. Improved subjective and objective outcomes were seen after multimodality treatment schemes in both stud-ies for CRSsNP. The study of Subramamian et  al. [48] pooled both CRSwNP and CRSsNP patients and found that the CRSsNP patients had better outcomes than CRSwNP patients. Lal et  al. [47] demonstrated that the CRSsNP patients showed total symptom resolution 2 months after treatment of 54.9% compared to 51% for the total CRS group. There are no studies available that investigated the benefits of systemic GCS in monother-apy in treating CRSsNP.

    Because of a lack of RCTs or even prospective stud-ies, evidence for clinical efficacy of oral GCS therapy in CRSsNP is Level 4 or 5 and in view of the AE discussed later on, not recommended for the management of CRSsNP.

    • Evidence level: C.• Benefits–harm assessment: AE’s of systemic GCS

    outweigh advantages of therapeutic value.• Recommendation: Recommendation against.

  • Page 8 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 3

    Sum

    mar

    y of

     the 

    evid

    ence

    for ‘

    effica

    cy o

    f sys

    tem

    ic s

    tero

    ids

    in a

    cute

    rhin

    osin

    usit

    is in

     adu

    lts’

    RCT

    rand

    omiz

    ed c

    ontr

    olle

    d tr

    ial,

    MP

    met

    hylp

    redn

    isol

    one,

    NSA

    ID n

    on-s

    tero

    idal

    ant

    i-infl

    amm

    ator

    y dr

    ug

    Stud

    yYe

    arLO

    E (1

    a to

     5)

    Stud

    y de

    sign

    Stud

    y gr

    oups

    Clin

    ical

    end

    ‑poi

    nt e

    ffica

    cyCo

    nclu

    sion

    Cann

    oni e

    t al.

    1990

    1bRC

    T 1.

    Adu

    lts w

    ith (s

    ub)a

    cute

    , non

    ‑alle

    rgic

    si

    nusi

    tis w

    ith a

    ntib

    iotic

    s an

    d pr

    edni

    solo

    ne

    40–6

    0 m

    g/da

    y fo

    r 7 d

    ays

    2. A

    dults

    with

    (sub

    )acu

    te, n

    on‑a

    llerg

    ic s

    inus

    itis

    with

    ant

    ibio

    tics

    and

    NSA

    ID fo

    r 7 d

    ays

    1. T

    hera

    peut

    ic s

    ucce

    ss d

    efine

    d as

    com

    bina

    ‑tio

    n of

    reso

    lutio

    n of

    pai

    n an

    d ab

    senc

    e of

    na

    sal d

    isch

    arge

    clin

    ical

    ly a

    nd e

    ndos

    copi

    ‑ca

    lly a

    t day

    7

    Bene

    ficia

    l effe

    ct o

    f pre

    dnis

    olon

    e in

    com

    bina

    ‑tio

    n w

    ith a

    ntib

    iotic

    s

    Geh

    anno

    et a

    l.20

    001b

    RCT

    1. A

    dults

    with

    acu

    te s

    inus

    itis

    trea

    ted

    with

    an

    tibio

    tics

    and

    met

    hylp

    redn

    isol

    one

    8 m

    g;

    3×/d

    ay fo

    r 5 d

    ay2.

    Adu

    lts w

    ith a

    cute

    sin

    usiti

    s tr

    eate

    d w

    ith a

    nti‑

    biot

    ics

    and

    plac

    ebo

    for 5

    day

    s

    1. C

    linic

    al re

    cove

    ry o

    n d

    142.

    Cou

    rse

    of s

    ympt

    oms

    on d

    ay 4

    3. S

    ympt

    oms

    and

    radi

    olog

    ical

    sig

    ns o

    n da

    y 30

    Sign

    ifica

    nt p

    ain

    relie

    f in

    com

    bina

    tion

    with

    ant

    i‑bi

    otic

    s co

    mpa

    red

    to a

    ntib

    iotic

    s in

    mon

    othe

    r‑ap

    y, n

    o ad

    ditio

    nal e

    ffect

    on

    nasa

    l dis

    char

    ge

    Klos

    sek

    et a

    l.20

    041b

    RCT

    1. A

    dults

    with

    acu

    te m

    axill

    ary

    sinu

    sitis

    tr

    eate

    d w

    ith a

    ntib

    iotic

    s an

    d pr

    edni

    sone

    0.

    8–1.

    2 m

    g/kg

    /day

    for 3

    day

    s2.

    Adu

    lts w

    ith a

    cute

    max

    illar

    y si

    nusi

    tis tr

    eate

    d w

    ith a

    ntib

    iotic

    s an

    d pl

    aceb

    o fo

    r 3 d

    ays

    1. D

    iffer

    ence

    in V

    AS

    for p

    ain

    at b

    asel

    ine

    and

    day

    32.

    Diff

    eren

    ces

    in V

    AS

    for n

    asal

    obs

    truc

    tion

    3. T

    ime

    to p

    ain

    relie

    f4.

    Adm

    inis

    trat

    ion

    of p

    arac

    etam

    ol5.

    Glo

    bal s

    ubje

    ctiv

    e eff

    ect o

    f tre

    atm

    ent o

    n da

    y 3

    6. G

    loba

    l sub

    ject

    ive

    effec

    t of t

    reat

    men

    t on

    days

    10–

    12

    Bene

    fit o

    f sho

    rt c

    ours

    e tr

    eatm

    ent o

    f pre

    dnis

    one

    in c

    ombi

    natio

    n w

    ith a

    ntib

    iotic

    s vs

    . ant

    ibio

    tics

    with

    pla

    cebo

    Rata

    u et

    al.

    2004

    1bRC

    T 1.

    Adu

    lts w

    ith a

    cute

    sin

    usiti

    s tr

    eate

    d w

    ith

    antib

    iotic

    s an

    d be

    tam

    etha

    sone

    1 m

    g/da

    y fo

    r 5 d

    ays

    2. A

    dults

    with

    acu

    te s

    inus

    itis

    trea

    ted

    with

    ant

    i‑bi

    otic

    s an

    d pl

    aceb

    o fo

    r 5 d

    ays

    1. Im

    prov

    emen

    t of s

    ympt

    oms

    betw

    een

    day

    0 an

    d da

    y 6

    2. P

    erce

    ntag

    e of

    par

    ticip

    ants

    with

    phy

    sica

    l si

    gns

    pres

    ent o

    r abs

    ent o

    n da

    y 0

    and

    day

    63.

    Num

    ber o

    f par

    acet

    amol

    tabl

    ets

    take

    n

    Bene

    fit o

    f ste

    roid

    s tr

    eatm

    ent i

    n co

    mbi

    natio

    n w

    ith a

    ntib

    iotic

    s vs

    . ant

    ibio

    tics

    with

    pla

    cebo

    Vene

    kam

    p et

    al.

    2012

    1bRC

    T 1.

    Adu

    lts w

    ith a

    cute

    sin

    usiti

    s tr

    eate

    d w

    ith

    pred

    niso

    lone

    30

    mg/

    day

    for 7

    day

    s2.

    Adu

    lts w

    ith a

    cute

    sin

    usiti

    s tr

    eate

    d w

    ith

    plac

    ebo

    for 7

    day

    s

    1. R

    esol

    utio

    n of

    faci

    al p

    ain/

    pres

    sure

    at d

    ay 7

    2. R

    esol

    utio

    n of

    oth

    er c

    linic

    ally

    rele

    vant

    sym

    p‑to

    ms

    on d

    ay 7

    3. T

    ime

    to re

    solu

    tion

    of to

    tal s

    ympt

    oms

    4. M

    edia

    n du

    ratio

    n of

    sym

    ptom

    s5.

    Qua

    lity

    of li

    fe6.

    Res

    umpt

    ion

    of d

    aily

    act

    iviti

    es

    No

    clin

    ical

    ly b

    enefi

    cial

    effe

    cts

    of s

    yste

    mic

    co

    rtic

    oste

    roid

    mon

    othe

    rapy

  • Page 9 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    5. Chronic rhinosinusitis with nasal polypsCRSwNP is different from CRSsNP by the presence of nasal polyps consisting of a large quantity of extracellular oedema with the presence of a dense inflammatory cell infiltrate [49, 50], which is characterized in about 80% of the Caucasian CRSwNP patients, by activated eosino-phils [51, 52] and is associated with a predominant Th2 cytokine profile (IL-4, IL-5, IL-10, eotaxin) [53, 54].

    A recent suite of Cochrane Reviews has considered the efficacy of interventions for CRSwNP. Two reviews were performed with respect to short-term oral GCS; one comparing oral GCS alone versus placebo or other treat-ment [55], and a second comparing oral GCS used as an adjunct to other treatments, versus control [56].

    For oral GCS alone, 8 trials with a total of 474 partici-pants, all of whom were adult patients CRSwNP, were identified [57–64]. All studies followed up patients to the end of the treatment course, and 3 followed patients for 3 to 6  months after completion. Patients receiving oral GCS achieved better quality of life (standardized mean difference (SMD) of − 1.24 95% CI − 1.92 to − 0.56, measured with RSOM-31), lower nasal symptom scores (SMD − 2.84, 95% CI − 4.09 to − 1.59) and greater polyp reduction (SMD − 1.21) than control groups at the end of the course of treatment. However, there was no differ-ence between groups at 3 to 6 months after the course of treatment.

    Treatment doses utilized in included studies included prednisone at 30  mg and reduced over 14  days, pred-nisolone at 60  mg reducing over 17  days, or at con-stant dosage of 50 mg or 25 mg for 14 days, or reducing dosages of MP over 20  days. Of the three studies that

    followed patients beyond the course of treatment, 2 prescribed ongoing intranasal GCS after completion of the systemic dose to both groups while one did not [58, 62, 63].

    Included trials were considered to be at low risk of bias, but overall the quality of evidence was rated as low due to the small numbers of participants, heteroge-neity of outcome measures and limited follow-up time in most studies.

    Another trial considered oral GCS versus placebo as an adjunct to treatment with intranasal GCS in CRSwNP patients [65]. This study recruited 30 participants and was considered at high risk of bias because of lack of blinding and lack of information on randomization. It reported greater reduction in polyp size in the active treatment arm (MD − 0.46, 95% CI − 0.87 to − 0.05).

    One trial included in the Cochrane review of oral GCS as an adjunctive treatment recruited children [66] and is therefore considered later in this document.

    Table  5 summarizes the evidence of these stud-ies and provides a recommendation for the treatment of CRSwNP by systemic GCS. There is good evidence that systemic GCS are effective in the management of CRSwNP, at least in the short-term. However, consid-ering the evolving understanding of CRSwNP and the chronicity of this condition, the short-lived benefits of systemic GCS therapy need to be balanced with the long-term potential AE’s which are discussed below. Therefore, systemic GCS should not be considered as a first line of treatment for CRSwNP. They can be used in a short course during 2–3  weeks as a last resort of treatment when combinations of other medications are ineffective.

    Table 4 Summary of the evidence for ‘efficacy of systemic steroids in CRSsNP in adults’

    CRS chronic rhinosinusitis, CRSsNP chronic rhinosinusitis without nasal polyps, CRSwNP chronic rhinosinusitis with nasal polyps

    Study Year LOE (1a to 5) Study design Study groups Clinical end‑point efficacy Conclusion

    Subramanian et al. 2002 4 Retrospective CRS patients (23 CRSsNP and 17 CRSwNP) treated with 1 month antibiot‑ics + intranasal ster‑oids + prednisone tapered over 10 days (20 mg 2×/day for 5 days, 20 mg 1×/day for 5 days). Mostly adult patients (2 patients under 18)

    Change in CT scores, symp‑tom scores post‑treatment. Time to relapse

    Beneficial effect of multimodal therapy on scoring of CT, symptoms or both in 90% of all CRS patients, no specific subanalysis for CRSsNP. Beneficial effect continued beyond 8 weeks in 60% of patients. No subanalysis made for CRSsNP

    Lal et al. 2009 4 Retrospective Adult CRS patients (23 CRSsNP and 17 CRSwNP) treated with antibiot‑ics + intranasal ster‑oids + intranasal decon‑gestants + prednisone tapered over 12 days (60, 40, 20, 10 mg for 3 days each)

    Complete endoscopic and symptomatic resolution of symptoms 2 months after start of treatment

    Beneficial effect of treatment in 54.9% of CRSsNP

  • Page 10 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 5

    Sum

    mar

    y of

     the 

    evid

    ence

    for ‘

    effica

    cy o

    f sys

    tem

    ic s

    tero

    ids

    in c

    hron

    ic rh

    inos

    inus

    itis

    wit

    h na

    sal p

    olyp

    s’

    Stud

    yYe

    arLO

    E (1

    a to

     5)

    Stud

    y de

    sign

    Stud

    y gr

    oups

    Clin

    ical

    end

    ‑poi

    nt e

    ffica

    cyCo

    nclu

    sion

    Alo

    bid

    et a

    l.20

    141b

    Pros

    pect

    ive

    non‑

    blin

    ded

    RCT

    Adu

    lt C

    RSw

    NP

    patie

    nts

    trea

    ted

    with

    in

    tran

    asal

    bud

    eson

    ide

    800

    μg d

    aily

    fo

    r 2 w

    eeks

    in c

    ombi

    natio

    n w

    ith o

    ral

    pred

    niso

    ne (3

    0 m

    g da

    ily fo

    r 4 d

    ays

    follo

    wed

    by

    a 2‑

    day

    redu

    ctio

    n of

    5

    mg)

    (n =

    67)

    or n

    othi

    ng (n

    = 2

    2)

    1. P

    olyp

    gra

    de m

    easu

    red

    by C

    T2.

    Nas

    al c

    onge

    stio

    n3.

    Los

    s of

    sen

    se o

    f sm

    ell

    3. P

    olyp

    tiss

    ue e

    osin

    ophi

    ls4.

    Nas

    al n

    itric

    oxi

    de

    Com

    bine

    d or

    al a

    nd in

    tran

    asal

    cor

    ticos

    ‑te

    roid

    s im

    prov

    e sm

    ell a

    nd n

    asal

    con

    ‑ge

    stio

    n, d

    ecre

    ase

    tissu

    e eo

    sino

    phili

    a an

    d in

    crea

    sed

    dete

    ctio

    n of

    nN

    O

    Beni

    tez

    et a

    l.20

    061b

    Pros

    pect

    ive

    non‑

    blin

    ded

    RCT

    Adu

    lt C

    RSw

    NP

    patie

    nts

    trea

    ted

    with

    or

    al p

    redn

    ison

    e, 3

    0 m

    g fo

    r 4 d

    ays

    and

    a 2‑

    day

    redu

    ctio

    n of

    5 m

    g fo

    r a to

    tal

    dura

    tion

    14 d

    ays

    follo

    wed

    by

    intr

    ana‑

    sal b

    udes

    onid

    e fo

    r 12

    wee

    ks (n

    = 6

    3)

    or n

    o tr

    eatm

    ent (

    n =

    21)

    1. D

    isea

    se in

    divi

    dual

    sym

    ptom

    sco

    ring

    of n

    asal

    obs

    truc

    tion,

    loss

    of s

    ense

    of

    smel

    l, rh

    inor

    rhoe

    a an

    d sn

    eezi

    ng2.

    Pol

    yp s

    ize

    mea

    sure

    d by

    end

    osco

    py3.

    Nas

    al fl

    ow m

    easu

    rem

    ents

    14 d

    ays

    of o

    ral s

    tero

    ids

    impr

    oved

    all

    nasa

    l sym

    ptom

    s, po

    lyp

    size

    , and

    nas

    al

    flow

    , whi

    ch is

    mai

    ntai

    ned

    by in

    tran

    asal

    st

    eroi

    d

    Ecev

    it et

    al.

    2015

    1bPr

    ospe

    ctiv

    e do

    uble

    ‑blin

    d RC

    T A

    dult

    CRS

    wN

    P pa

    tient

    s tr

    eate

    d w

    ith

    oral

    pre

    dnis

    olon

    e, 6

    0 m

    g/da

    y (6

    tab‑

    lets

    per

    day

    ) for

    7 d

    ays,

    then

    redu

    ced

    to 1

    0 m

    g (1

    tabl

    et) t

    aken

    eve

    ry o

    ther

    da

    y, s

    topp

    ing

    on d

    ay 1

    7 (n

    = 1

    1) o

    r pl

    aceb

    o (n

    = 1

    0)

    1. V

    isua

    l ana

    logu

    e sc

    ale

    for s

    ense

    of

    smel

    l, na

    sal d

    isch

    arge

    , nas

    al o

    bstr

    uc‑

    tion

    and

    pres

    sure

    ove

    r the

    sin

    uses

    2. S

    mel

    l tes

    ting

    3. P

    eak

    nasa

    l ins

    pira

    tory

    pea

    k flo

    w

    The

    impr

    ovem

    ent i

    n th

    e co

    rtic

    oste

    roid

    gr

    oup

    in th

    e VA

    S sc

    ores

    , sm

    ell t

    ests

    an

    d PN

    IF v

    alue

    s sh

    owed

    sta

    tistic

    ally

    si

    gnifi

    cant

    diff

    eren

    ces

    com

    pare

    d to

    the

    plac

    ebo

    grou

    p

    His

    saria

    et a

    l.20

    061b

    Pros

    pect

    ive

    doub

    le‑b

    lind

    RCT

    Adu

    lt C

    RSw

    NP

    patie

    ts tr

    eate

    d w

    ith

    pred

    niso

    lone

    , 50

    mg/

    day

    for 1

    4 da

    ys

    (n =

    20)

    or p

    lace

    bo (n

    = 2

    1)

    1. H

    ealth

    ‑rel

    ated

    qua

    lity

    of li

    fe (R

    SOM

    ‑31

    )2.

    Phy

    sici

    an a

    sses

    smen

    t of n

    asal

    sy

    mpt

    oms

    (con

    gest

    ion,

    hyp

    osm

    ia,

    rhin

    orrh

    oea,

    sne

    ezin

    g, p

    ostn

    asal

    drip

    an

    d itc

    h)3.

    Pol

    yps

    size

    mea

    sure

    d by

    end

    osco

    py4.

    MRI

    of t

    he p

    aran

    asal

    sin

    uses

    The

    pred

    niso

    lone

    ‑tre

    ated

    gro

    up s

    how

    ed

    sign

    ifica

    nt im

    prov

    emen

    t in

    nasa

    l sy

    mpt

    oms.

    The

    RSO

    M‑3

    1 im

    prov

    ed in

    bo

    th g

    roup

    s, bu

    t the

    pre

    dnis

    olon

    e‑tr

    eate

    d gr

    oup

    had

    sign

    ifica

    ntly

    gre

    ater

    im

    prov

    emen

    t tha

    n th

    e pl

    aceb

    o gr

    oup.

    Th

    ere

    was

    sig

    nific

    ant r

    educ

    tion

    in

    poly

    p si

    ze, a

    s no

    ted

    with

    nas

    endo

    s‑co

    py (P

    < 0

    .001

    ) and

    MRI

    (P <

    0.0

    01),

    only

    in th

    e pr

    edni

    solo

    ne‑t

    reat

    ed g

    roup

    Kapu

    cu e

    t al.

    2012

    2bPr

    ospe

    ctiv

    e un

    blin

    ded

    RCT

    Adu

    lt C

    RSw

    NP

    patie

    nts

    trea

    ted

    with

    or

    al m

    ethy

    lpre

    dnis

    olon

    e 1

    mg/

    kg/

    day.

    The

    dos

    e w

    as a

    pplie

    d fo

    r 3 d

    ays

    and

    tape

    red

    grad

    ually

    , with

    a re

    duc‑

    tion

    rate

    of 8

    mg/

    3 da

    ys (n

    = 1

    2) o

    r no

    med

    icat

    ion

    (n =

    12)

    Apo

    ptot

    ic in

    dex

    Stat

    istic

    ally

    sig

    nific

    ant d

    iffer

    ence

    s in

    ap

    opto

    tic in

    dex

    wer

    e fo

    und

    betw

    een

    each

    ste

    roid

    ‑med

    icat

    ed g

    roup

    and

    the

    cont

    rol g

    roup

    Kirt

    sree

    saku

    l et a

    l.20

    121b

    Pros

    pect

    ive

    doub

    le‑b

    lind

    RCT

    Adu

    lt C

    RSw

    NP

    patie

    nts

    trea

    ted

    with

    or

    al p

    redn

    isol

    one

    50 m

    g da

    ily fo

    r 14

    day

    s (n

    = 6

    7) o

    r pla

    cebo

    (n =

    47)

    1. S

    ympt

    om s

    corin

    g fo

    r blo

    cked

    nos

    e,

    runn

    y no

    se, s

    neez

    ing,

    nas

    al it

    chin

    g,

    hypo

    smia

    , pos

    tnas

    al d

    rip, c

    ough

    and

    si

    nona

    sal p

    ain

    2. N

    asal

    pol

    yp s

    ize

    mea

    sure

    d by

    en

    dosc

    opy

    The

    pred

    niso

    lone

    ‑tre

    ated

    gro

    up s

    how

    ed

    sign

    ifica

    ntly

    gre

    ater

    impr

    ovem

    ents

    in

    all

    nasa

    l sym

    ptom

    s, na

    sal fl

    ow a

    nd

    poly

    p si

    ze th

    an th

    e pl

    aceb

    o‑tr

    eate

    d gr

    oup

  • Page 11 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 5

    (con

    tinu

    ed)

    Stud

    yYe

    arLO

    E (1

    a to

     5)

    Stud

    y de

    sign

    Stud

    y gr

    oups

    Clin

    ical

    end

    ‑poi

    nt e

    ffica

    cyCo

    nclu

    sion

    Vaid

    yana

    than

    et a

    l.20

    111b

    Pros

    pect

    ive

    doub

    le‑b

    lind

    RCT

    Adu

    lt C

    RSw

    NP

    patie

    nts

    trea

    ted

    with

    pr

    edni

    solo

    ne ta

    blet

    s, 25

    mg/

    day,

    2

    wee

    ks (n

    = 3

    0) o

    r pla

    cebo

    (n =

    30)

    in

    pat

    ient

    s on

    intr

    anas

    al s

    tero

    ids

    1. Ju

    nipe

    r min

    i rhi

    noco

    njun

    ctiv

    itis

    Qua

    lity

    of L

    ife Q

    uest

    ionn

    aire

    2. T

    otal

    nas

    al s

    ympt

    oms

    scor

    e3.

    Sen

    se o

    f sm

    ell

    4. N

    asal

    pol

    yp s

    core

    by

    endo

    scop

    y5.

    Pea

    k na

    sal i

    nspi

    rato

    ry fl

    ow ra

    te6.

    Ser

    um e

    osin

    ophi

    l‑der

    ived

    neu

    roto

    xin

    7. H

    igh‑

    sens

    itivi

    ty C

    ‑rea

    ctiv

    e pr

    otei

    n le

    vels

    Shor

    t ora

    l ste

    roid

    ther

    apy

    follo

    wed

    by

    topi

    cal s

    tero

    id th

    erap

    y is

    sig

    nifi‑

    cant

    ly m

    ore

    effec

    tive

    over

    6 m

    onth

    s th

    an to

    pica

    l ste

    roid

    ther

    apy

    alon

    e in

    de

    crea

    sing

    pol

    yp s

    ize

    and

    impr

    ovin

    g ol

    fact

    ion

    in C

    RSw

    NP

    patie

    nts

    with

    at

    leas

    t mod

    erat

    e na

    sal p

    olyp

    s

    Van

    Zele

    et a

    l.20

    101b

    Pros

    pect

    ive

    doub

    le‑b

    lind

    RCT

    Adu

    lt C

    RSw

    NP

    patie

    nts

    trea

    ted

    with

    or

    al m

    ethy

    lpre

    dnis

    olon

    e (3

    2 m

    g/da

    y on

    day

    s 1

    to 5

    ; 16

    mg/

    day

    on d

    ays

    6 to

    10;

    8 m

    g/da

    y on

    day

    s 11

    to 2

    0)

    (n =

    14)

    or p

    lace

    bo (n

    = 1

    9)

    1. P

    olyp

    s si

    ze m

    easu

    red

    by e

    ndos

    copy

    2. N

    asal

    pea

    k in

    spira

    tory

    flow

    3. B

    lood

    ana

    lysi

    s fo

    r eos

    inop

    hils

    , eo

    sino

    phili

    c ca

    tioni

    c pr

    otei

    n an

    d so

    lubl

    e IL

    ‑5 re

    cept

    or4.

    Nas

    al s

    ecre

    tion

    anal

    ysis

    for e

    osin

    o‑ph

    ilic

    catio

    nic

    prot

    ein,

    IL‑5

    , IgE

    , mat

    rix

    met

    allo

    prot

    eina

    se‑9

    , mye

    lope

    roxi

    ‑da

    se5.

    Nee

    d fo

    r res

    cue

    surg

    ery

    and

    need

    for

    resc

    ue n

    asal

    ste

    roid

    s

    Met

    hylp

    redn

    isol

    one

    sign

    ifica

    ntly

    de

    crea

    sed

    nasa

    l pol

    yp s

    ize

    com

    pare

    d w

    ith p

    lace

    bo. T

    he e

    ffect

    was

    max

    imal

    at

    wee

    k 3

    and

    last

    ed u

    ntil

    wee

    k 8.

    M

    ethy

    lpre

    dnis

    olon

    e si

    gnifi

    cant

    ly

    redu

    ced

    leve

    ls o

    f EC

    P, IL

    ‑5, a

    nd Ig

    E in

    na

    sal s

    ecre

    tions

    RCT

    rand

    omiz

    ed c

    ontr

    olle

    d tr

    ial,

    CRS

    chro

    nic

    rhin

    osin

    usiti

    s, CR

    SwN

    P ch

    roni

    c rh

    inos

    inus

    itis

    with

    nas

    al p

    olyp

    s

  • Page 12 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    • Evidence level: A.• Benefits–harm assessment: AE’s of systemic GCS

    outweigh advantages of therapeutic value in the long-term, except in patients with severe symptomatology.

    • Recommendation: Strong recommendation against. Option for a short-term course in patients with severe symptoms and therapy-resistance.

    A separate indication, for which oral GCS have been prescribed in CRSwNP patients, is the preoperative setting, in order to reduce perioperative bleeding and improve surgical conditions for the surgeon during endo-scopic sinus surgery (ESS). Of the five studies that have been performed studying this topic in adults (Table  6), four are RCTs, however, their outcomes are not con-clusive The study from Ecevit demonstrated a signifi-cant improvement on all perioperative variables studied (perioperative bleeding, visibility of the operative field, operative time, hospital stay) after a preoperative course of GCS in CRSwNP patients [59]. However, while some other studies confirm a significant improvement of intra-operative bleeding time [67] or quality of the operating field [68] and surgical time [69], these differences were not found to be significant by their colleagues [67–70]. A recent meta-analysis reported on a significant reduction in operating time, perioperative blood loss and improved surgical field quality when patients were given preopera-tive steroid treatment, however, the result was mainly based on a large RCT reporting on intranasal GCS [71]. Therefore, the use of oral GCS is currently not recom-mended in the preoperative setting of CRSwNP patients.

    • Evidence level: B.• Benefits–harm assessment: AE’s of systemic GCS

    outweigh advantages of therapeutic value.• Recommendation: Strong recommendation against.

    6. Allergic fungal rhinosinusitisAllergic fungal rhinosinusitis (AFRS) is a form of a non-invasive fungal rhinosinusitis and although it is not characterized by a specific phenotype, it seems to be an immunologically distinct subtype of CRS [72]. The diag-nosis is based on the criteria proposed by Bent and Kuhn: (1) production of eosinophilic mucin without fungal invasion into sinonasal tissue; (2) positive fungal stain of sinus contents; (3) nasal polyposis; (4) characteristic radi-ographic findings; and (5) allergy to fungi [73]. In view of the locally aggressive character of the disease, the corner-stone of AFRS treatment is surgery [74]. However, a lot of uncertainty remains concerning the medical options and postoperative therapy. Although no RCTs are avail-able, we found four smaller studies that investigated

    the role of GCS in the management of AFRS mostly in adults (Table 7). Two prospective non-controlled studies examined the effects of GCS in a small number of AFRS patients without surgery [75, 76]. Woodworth showed a significant reduction in nasal endoscopy scores and inflammatory markers in the AFRS group after 18  days of prednisone [76]. Landsberg [75] showed a more sig-nificant reduction in radiologic and mucosal scoring in AFRS patients compared to CRSwNP patients after 10  days of prednisolone. An older retrospective study from Kupferberg [77] in 26 AFRS patients, found that patients who received postoperative GCS showed more symptom improvement and less endoscopic disease com-pared to treatment with oral antifungals or no treatment. However, disease recurrence was noted after cessation of GCS. Similar findings were seen in a non-controlled ret-rospective study from Kuhn and Javer [78] who showed a maintenance of low endoscopic scores in AFRS patients, only after long-term GCS use. No AE’s were reported in any of the four studies. It has to be noted that all of these studies have a high risk of bias and the level of evidence for the use of oral GCS in AFRS patients remains at level C.

    • Evidence level: C.• Benefits–harm assessment: Balance of harm and

    benefit in patients with severe disease.• Recommendation: Option in patients with severe

    AFRS (severe symptoms and/or locally invasive dis-ease) in conjunction with ESS.

    7. Nasal manifestations of auto‑immune diseaseMany auto-immune disorders can involve the nose: thyroid auto-immunity, various vasculitis, Sjogren’s syndrome and sarcoidosis are the most frequently encountered, but other connective tissue diseases, such as systemic lupus erythematosus, polyarteritis nodosa, scleroderma and relapsing polychondritis can also have nasal symptoms [39].

    GCS have been the major therapeutic option for some of these diseases as an immune suppressant for the past decades, probably being most effective where eosino-phils, which are exquisitely steroid-sensitive, are involved [79]. However, the quality of the evidence for their effi-cacy is poor, with studies mostly being reviews or open pilots, even in seminal trials such as those of Fauci for Wegener’s granulomatosis [80–82]. The reasons for this include not only time-hallowed use, but also difficulty in undertaking placebo-controlled trials in severe dis-eases, differences in the manifestations and their inten-sity between individual patients, disease complexity and plasticity and probably lack of interest in funding. This

  • Page 13 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 6

    Sum

    mar

    y of

     the 

    evid

    ence

    for ‘

    effica

    cy o

    f sys

    tem

    ic s

    tero

    ids

    befo

    re e

    ndos

    copi

    c si

    nus

    surg

    ery

    in C

    RSw

    NP’

    RCT

    rand

    omiz

    ed c

    ontr

    olle

    d tr

    ial,

    CRS

    chro

    nic

    rhin

    osin

    usiti

    s, CR

    SwN

    P ch

    roni

    c rh

    inos

    inus

    itis

    with

    nas

    al p

    olyp

    s

    Stud

    yYe

    arLO

    E (1

    a to

     5)

    Stud

    y de

    sign

    Stud

    y gr

    oups

    Clin

    ical

    end

    poin

    ts e

    ffica

    cyCo

    nclu

    sion

    Ecev

    it et

    al.

    2015

    1bPr

    ospe

    ctiv

    e do

    uble

    ‑blin

    d RC

    T A

    dults

    with

    CRS

    wN

    P w

    ith s

    urgi

    cal i

    ndic

    atio

    n re

    ceiv

    ing

    eith

    er o

    ral p

    redn

    isol

    one,

    60

    mg/

    day

    for 7

    day

    , the

    n re

    duce

    d to

    10

    mg

    (1

    tabl

    et) t

    aken

    eve

    ry o

    ther

    day

    , sto

    ppin

    g on

    d

    17 (n

    = 1

    1) o

    r pla

    cebo

    (n =

    10)

    1. P

    erio

    pera

    tive

    blee

    ding

    2. V

    isib

    ility

    of t

    he o

    pera

    tive

    field

    3. O

    pera

    tive

    time

    4. H

    ospi

    tal s

    tay

    Perio

    pera

    tive

    blee

    ding

    , ope

    rativ

    e tim

    e an

    d ho

    spita

    l sta

    y w

    ere

    sign

    ifica

    ntly

    redu

    ced

    in

    patie

    nts

    who

    rece

    ived

    ora

    l ste

    roid

    s. Vi

    sibi

    lity

    of th

    e op

    erat

    ive

    field

    was

    sig

    nific

    antly

    bet

    ter

    afte

    r rec

    eivi

    ng s

    tero

    ids

    Wrig

    ht e

    t al.

    2007

    1bPr

    ospe

    ctiv

    e do

    uble

    ‑blin

    d RC

    T 26

    adu

    lt C

    RSw

    NP

    patie

    nts

    with

    sur

    gica

    l ind

    i‑ca

    tion

    rece

    ivin

    g ei

    ther

    30

    mg

    of p

    redn

    ison

    e fo

    r 5 d

    ays

    preo

    pera

    tivel

    y or

    pla

    cebo

    1. D

    ifficu

    lty o

    f sur

    gery

    2. O

    pera

    tive

    time

    3. P

    erop

    erat

    ive

    bloo

    d lo

    ss

    Surg

    eons

    rate

    d th

    e su

    rger

    y in

    the

    plac

    ebo‑

    trea

    ted

    grou

    p as

    mor

    e di

    fficu

    lt th

    an th

    e st

    eroi

    d‑tr

    eate

    d gr

    oup

    No

    diffe

    renc

    es w

    ere

    note

    d in

    ope

    rativ

    e du

    ra‑

    tion

    and

    bloo

    d lo

    ss

    Gün

    el e

    t al.

    2015

    1bPr

    ospe

    ctiv

    e do

    uble

    ‑blin

    d RC

    T 65

    adu

    lt C

    RSw

    NP

    patie

    nts

    with

    sur

    gica

    l in

    dica

    tion

    rece

    ivin

    g ei

    ther

    ora

    l pre

    dnis

    o‑lo

    ne (1

    mg/

    kg fo

    r 2 d

    ays

    and

    then

    tape

    red

    dow

    n, w

    ith tr

    eatm

    ent c

    ompl

    eted

    on

    the

    day

    10) o

    r pla

    cebo

    1. In

    trao

    pera

    tive

    bloo

    d lo

    ss2.

    Qua

    lity

    of s

    urgi

    cal fi

    eld

    No

    diffe

    renc

    e in

    intr

    aope

    rativ

    e bl

    ood

    loos

    w

    hen

    patie

    nts

    rece

    ived

    ora

    l ste

    roid

    s pr

    eop‑

    erat

    ivel

    yN

    on‑s

    igni

    fican

    t im

    prov

    emen

    t of q

    ualit

    y of

    su

    rgic

    al fi

    eld

    afte

    r ora

    l ste

    roid

    s

    Frai

    re e

    t al.

    2013

    3bPr

    ospe

    ctiv

    e no

    n‑ra

    ndom

    ized

    CT

    Adu

    lt C

    RS p

    atie

    nts

    with

    sur

    gica

    l ind

    icat

    ion

    (CRS

    sNP

    and

    CSR

    wN

    P) re

    ceiv

    ing

    eith

    er

    2×/d

    ay 3

    0 m

    g m

    ethy

    lpre

    dnis

    olon

    e on

    5

    cons

    ecut

    ive

    days

    prio

    r to

    surg

    ery

    (n =

    27)

    vs

    . no

    trea

    tmen

    t (n =

    27)

    1. In

    trao

    pera

    tive

    blee

    ding

    2. S

    urgi

    cal t

    ime

    3. Q

    ualit

    y of

    sur

    gica

    l fiel

    d

    Ope

    rativ

    e bl

    eedi

    ng w

    as s

    igni

    fican

    tly re

    duce

    d in

    CRS

    wN

    P pa

    tient

    s w

    ho re

    ceiv

    ed o

    ral s

    ter‑

    oids

    pre

    oper

    ativ

    ely.

    No

    sign

    ifica

    nce

    obta

    ined

    in

    qua

    lity

    of o

    pera

    ting

    field

    . No

    diffe

    renc

    e in

    su

    rgic

    al ti

    me

    Sies

    kiew

    icz

    2006

    1bRC

    T 36

    adu

    lt C

    RSw

    NP

    patie

    nts

    with

    sur

    gica

    l ind

    i‑ca

    tion

    rece

    ivin

    g ei

    ther

    pre

    dnis

    one

    (30

    mg/

    day

    for 5

    con

    secu

    tive

    days

    dire

    ctly

    bef

    ore

    the

    surg

    ery)

    or n

    o pr

    eope

    rativ

    e tr

    eatm

    ent

    1. In

    trao

    pera

    tive

    blee

    ding

    2. S

    urgi

    cal t

    ime

    3. Q

    ualit

    y of

    sur

    gica

    l fiel

    d

    Qua

    lity

    of th

    e op

    erat

    ing

    field

    and

    sur

    gica

    l tim

    e w

    ere

    sign

    ifica

    ntly

    impr

    oved

    in C

    RSw

    NP

    patie

    nts

    who

    rece

    ived

    ora

    l ste

    roid

    s pr

    eop‑

    erat

    ivel

    y. N

    o si

    gnifi

    canc

    e ob

    tain

    ed in

    tota

    l bl

    ood

    loss

  • Page 14 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 7

    Sum

    mar

    y of

     the 

    evid

    ence

    for ‘

    effica

    cy o

    f sys

    tem

    ic s

    tero

    ids

    in a

    llerg

    ic fu

    ngal

    rhin

    osin

    usit

    is’

    CRS

    chro

    nic

    rhin

    osin

    usiti

    s, CR

    SwN

    P ch

    roni

    c rh

    inos

    inus

    itis

    with

    nas

    al p

    olyp

    s, AF

    RS a

    llerg

    ic fu

    ngal

    rhin

    osin

    usiti

    s, IL

    inte

    rleuk

    in, M

    CP m

    onoc

    yte

    chem

    otac

    tic p

    rote

    in

    Stud

    yYe

    arLO

    E (1

    a to

     5)

    Stud

    y de

    sign

    Stud

    y gr

    oups

    Clin

    ical

    end

    ‑poi

    nt e

    ffica

    cyCo

    nclu

    sion

    Woo

    dwor

    th e

    t al.

    2004

    3bPr

    ospe

    ctiv

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    ol s

    tudy

    Adu

    lts w

    ith C

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    AFR

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    6 e

    osin

    ophi

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    usiti

    s w

    ere

    trea

    ted

    with

    ora

    l pre

    dnis

    one

    (60

    mg

    for 3

    day

    s, 40

    mg

    for 3

    day

    s, 30

    mg

    for 3

    day

    s, 20

    mg

    for 1

    2 da

    ys)

    1. S

    NO

    T‑20

    2. N

    asal

    end

    osco

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    core

    3. M

    ucos

    al IL

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    , eot

    axin

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    P‑4

    Sign

    ifica

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    duct

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    nd in

    flam

    mat

    ory

    mar

    kers

    , non

    ‑si

    gnifi

    cant

    redu

    ctio

    n in

    SN

    OT‑

    20 s

    core

    s

    Land

    sber

    g et

    al.

    2007

    3bPr

    ospe

    ctiv

    e ca

    se c

    ontr

    ol s

    tudy

    Adu

    lt A

    FRS

    and

    CRS

    wN

    P pa

    tient

    s re

    ceiv

    ed 1

    mg/

    kg p

    redn

    ison

    e fo

    r 10

    day

    s

    1. C

    T Lu

    nd M

    acka

    y sc

    ores

    2. N

    asal

    end

    osco

    py s

    core

    , but

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    scor

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    em u

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    scor

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    ange

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    ere

    sign

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    gr

    eate

    r in

    AFR

    S pa

    tient

    s co

    mpa

    red

    to

    CRS

    wN

    P

    Kupf

    erbe

    rg e

    t al.

    1997

    4Re

    tros

    pect

    ive

    case

    con

    trol

    stu

    dyA

    dult

    and

    adol

    esce

    nt A

    FRS

    patie

    nts

    (13–

    69 y

    ears

    ) tha

    t und

    erw

    ent s

    urge

    ry

    and

    rece

    ivin

    g: (1

    ) no

    trea

    tmen

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    ) ora

    l st

    eroi

    ds (4

    day

    s 40

    mg,

    then

    4 d

    ays

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    en 2

    0 m

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    til 1

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    post

    op);

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    ; (4)

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    asal

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    core

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    t with

    ora

    l ste

    roid

    s al

    one

    impr

    oved

    90%

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    he p

    atie

    nts,

    how

    ever

    , dis

    ease

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    as s

    een

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    satio

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    Kuhn

    and

    Jave

    r20

    004

    Case

    ser

    ies

    Post

    oper

    ativ

    e st

    eroi

    ds in

    adu

    lt A

    FRS

    patie

    nts

    (0.4

    mg/

    kg/d

    ay fo

    r 4 d

    ays,

    then

    0.3

    mg/

    kg/d

    ay fo

    r 4 d

    ays,

    then

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    2 m

    g/kg

    /day

    mai

    nten

    ance

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    ndos

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    ths

  • Page 15 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    situation is now changing with the advent of newer thera-pies, particularly monoclonal antibodies, which are being trialled against older therapies including GCS [83].

    Churg–Strauss syndrome, now called eosinophilic granulomatosis with polyangiitis (EGPA), is classically considered a Th2-mediated disease and affects sino-nasal mucosa in > 80% of the patients. Treatment must be tai-lored according to prognostic factors identified by the French Vasculitis Study Group [84]. GCS alone are used for mild disease, high-dose GCS and cyclophosphamide is still the gold standard for severe cases [85], but biologi-cal agents such as rituximab or anti-IL-5 biologicals are promising, though costly, alternatives [86].

    The hallmark of granulomatosis with polyangiitis (GPA; previously known as Wegener’s disease) is the coexist-ence of vasculitis and granuloma and again over 80% of patients show sino-nasal involvement [87]. GCS alone are insufficiently effective: the induction treatment for severe GPA comprises GCS combined with another immu-nosuppressant, cyclophosphamide or rituximab. Once remission is achieved, maintenance strategy following cyclophosphamide-based induction relies on less toxic agents such as azathioprine or methotrexate.

    GCS decrease the frequency, duration, and severity of flares in relapsing polychondritis, but do not stop disease progression in severe cases [88].

    The presence of sino-nasal disease is associated with more severe sarcoidosis and the need for systemic GCS therapy [89].

    Treatment for systemic lupus erythematosus (SLE) by various organ systems is not evidence-based beyond the usual first- or second-line treatment, however a recent meeting achieved consensus in several scenarios, includ-ing anti-phospholipid syndrome [90].

    GCS, often combined with NSAIDs, are used in Sjogren’s syndrome to treat associated interstitial lung disease and/or sensorineural hearing loss [91].

    Table 8 shows the evidence available for auto-immune disorders for which GCS are frequently used.

    • Evidence level: D.• Benefits–harm assessment: Depending on other

    organ involvement and severity.• Recommendation: Following the recommendation

    for the management of the specific auto-immune dis-ease.

    8. Sino‑nasal pathology and concomitant asthmaAsthma is a chronic inflammatory disease of the lower airways involving inflammation of the bronchial mucosa, and variable obstruction of bronchi due to

    intrinsic/extrinsic stimuli, and leading to symptoms such as episodic breathlessness and wheezing with air-way hyperresponsiveness to environmental stimuli [92]. Since the introduction of the “United Airway Disease” concept [1], a large series of scientific publications from clinical epidemiology, pathophysiology, histology, and treatment outcomes has correlated asthma and upper airway disease. AR and asthma often coexist and AR is regarded as a risk factor for the development of asthma. Uncontrolled rhinitis impacts asthma control. Asthmatic patients have a higher CRS severity score than non-asthmatic patients, and more nasal polyps, indicative of a strong relationship between CRS sever-ity and asthma [93]. It has been reported that 20–60% of patients with CRSwNP have asthma [94, 95].

    The first use of GCS to treat acute asthma exacerba-tion was in 1956 [96]. Development of GCS that have less mineralocorticoid activity, like prednisone, and later those that have no mineralocorticoid activity, like dexamethasone, made steroid use more attractive ther-apies to use in asthma. Prescribing a short course of oral GCS following the treatment of acute asthma exac-erbations was found to reduce the rate of relapse [97]. However, courses longer than 5 days were not found to provide any additional benefit [98].

    As described above, systemic GCS should not be con-sidered as a treatment for AR. We could not identify any systematic review, randomized trial, or controlled study that evaluated the use of systemic GCS in patients with AR with concomitant asthma not responding to other therapy.

    When analysing the evidence of oral GCS for patients with CRS and coexisting asthma there are a few rand-omized controlled trials and uncontrolled prospective interventional studies that evaluated the efficacy of dif-ferent treatments (Table 9) of which only one looked at systemic GCS use. This study was carried out in adults by Ikeda et al. [99] and included 21 CRS patients with concomitant asthma. Fifteen patients underwent ESS, and 6 other patients remained on medical therapy. Seven patients of the ESS group showed a reduction in the need for GCS during the 6  months following sur-gery, whereas two patients were unchanged and two patients required larger dosages.

    Generally, due to a lack of studies investigating the efficacy of GCS in asthmatics with CRS, the same rules apply as for non-asthmatic CRS patients. With regards to the morbidity and potential mortality that is asso-ciated with asthma, the use of GCS in asthmatic CRS patients should be directed in the first place by the severity of the lower airway symptoms.

  • Page 16 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 8

    sum

    mar

    y of

     the 

    evid

    ence

    for e

    ffica

    cy o

    f sys

    tem

    ic s

    tero

    ids

    in th

    e tr

    eatm

    ent o

    f aut

    o-im

    mun

    e di

    seas

    e

    Aut

    o‑im

    mun

    e di

    seas

    e +

    stud

    yYe

    arLO

    ESt

    udy

    desi

    gnSt

    udy

    grou

    psCo

    nclu

    sion

    EGPA

    Moo

    sig

    et a

    l.20

    133

    A re

    tros

    pect

    ive

    coho

    rt s

    tudy

    at a

    vas

    culit

    is re

    fer‑

    ral c

    entr

    e15

    0 fu

    lfille

    d th

    e in

    clus

    ion

    crite

    ria. O

    f tho

    se, 1

    04

    had

    mor

    e th

    an o

    ne fo

    llow

    ‑up

    visi

    t sev

    ere

    orga

    n m

    anife

    stat

    ions

    : hea

    rt (4

    6%),

    kidn

    ey

    (18%

    ) and

    lung

    s (1

    0%).

    Cycl

    opho

    spha

    mid

    e w

    as u

    sed

    in 1

    07 p

    atie

    nts

    (71%

    ). Th

    e pr

    edni

    ‑so

    lone

    ‑dos

    es o

    f all

    patie

    nts

    wer

    e w

    ithin

    the

    targ

    eted

    rang

    e (i.

    e. ≤

    7.5

    mg)

    in 6

    9% o

    f the

    to

    tal f

    ollo

    w‑u

    p tim

    e; th

    e m

    edia

    n do

    se a

    t end

    of

    follo

    w‑u

    p w

    as 5

    mg/

    day

    10‑y

    ear s

    urvi

    val r

    ate

    was

    89%

    , mor

    talit

    y co

    m‑

    para

    ble

    to th

    e ge

    nera

    l pop

    ulat

    ion

    (SM

    R 1.

    29).

    Patie

    nts

    with

    car

    diac

    failu

    re h

    ad in

    crea

    sed

    mor

    talit

    y (S

    MR

    3.06

    )

    GPA

    WG

    ET R

    esea

    rch

    Gro

    up20

    051b

    180‑

    patie

    nt m

    ultic

    entr

    e, p

    lace

    bo‑c

    ontr

    olle

    d RC

    T ex

    amin

    ing

    the

    effica

    cy o

    f eta

    nerc

    ept i

    n W

    GC

    T Se

    vere

    dis

    ease

    rece

    ived

    cyc

    loph

    osph

    amid

    e an

    d co

    rtic

    oste

    roid

    s; lim

    ited

    dise

    ase

    rece

    ived

    m

    etho

    trex

    ate

    and

    cort

    icos

    tero

    ids

    etan

    erce

    pt

    (25

    mg

    twic

    e w

    eekl

    y) o

    r pla

    cebo

    was

    add

    ed to

    co

    nven

    tiona

    l the

    rapy

    Add

    ition

    of e

    tane

    rcep

    t did

    not

    lead

    to m

    ore

    sust

    aine

    d re

    mis

    sion

    s; lo

    wer

    leve

    ls o

    f dis

    ease

    ac

    tivity

    ; red

    uctio

    n in

    tim

    e to

    rem

    issi

    on n

    or th

    e nu

    mbe

    r or r

    elat

    ive

    risk

    of fl

    ares

    ; nor

    few

    er s

    ever

    e or

    life

    ‑thr

    eate

    ning

    adv

    erse

    eve

    nts

    or d

    eath

    s

    Rela

    psin

    g po

    lych

    ondr

    itis

    McA

    dam

    et a

    l.19

    763

    Revi

    ew15

    9 re

    port

    ed c

    ases

    , 23

    thos

    e of

    the

    auth

    ors

    Thre

    e‑fo

    urth

    s of

    our

    pat

    ient

    s re

    quire

    d ch

    roni

    c co

    rtic

    oste

    roid

    ther

    apy

    with

    an

    aver

    age

    dose

    of

    25 m

    g pe

    r day

    of p

    redn

    ison

    e. C

    ortic

    oste

    roid

    s de

    crea

    se th

    e fre

    quen

    cy, d

    urat

    ion,

    and

    sev

    erity

    of

    flar

    es, b

    ut d

    o no

    t sto

    p di

    seas

    e pr

    ogre

    ssio

    n in

    sev

    ere

    case

    s. M

    orta

    lity

    rate

    30

    perc

    ent i

    n ou

    r se

    ries

    and

    22 p

    erce

    nt in

    the

    othe

    r 136

    repo

    rted

    ca

    ses

    EGPA

    Ribi

    et a

    l.20

    082

    RCT

    72 p

    atie

    nts

    with

    new

    ly d

    iagn

    osed

    EG

    PA (F

    FS o

    f 0)

    trea

    ted

    with

    CS

    alon

    e. A

    t tre

    atm

    ent f

    ailu

    re o

    r re

    laps

    e, p

    atie

    nts

    wer

    e ra

    ndom

    ized

    to re

    ceiv

    e 6

    mon

    ths

    of o

    ral A

    ZA o

    r 6 p

    ulse

    s of

    CYC

    93%

    ach

    ieve

    d re

    mis

    sion

    with

    CS

    alon

    e, 3

    5%

    rela

    psed

    , mai

    nly

    durin

    g th

    e fir

    st y

    ear o

    f tre

    at‑

    men

    t. A

    mon

    g th

    e 19

    pat

    ient

    s ra

    ndom

    ized

    to

    addi

    tiona

    l im

    mun

    osup

    pres

    sion

    , 5 o

    f 10

    rece

    iv‑

    ing

    AZA

    and

    7 o

    f 9 re

    ceiv

    ing

    puls

    e C

    YC a

    chie

    ved

    rem

    issi

    on, P

    = N

    SSu

    rviv

    al ra

    tes

    in a

    ll pa

    tient

    s at

    1 a

    nd 5

    yea

    rs w

    ere

    100%

    and

    97%

    , res

    pect

    ivel

    y. A

    t the

    end

    of

    follo

    wup

    , 79%

    of t

    he p

    atie

    nts

    who

    se d

    isea

    se

    was

    in re

    mis

    sion

    requ

    ired

    low

    ‑dos

    e C

    S th

    erap

    y,

    mai

    nly

    to c

    ontr

    ol re

    spira

    tory

    dis

    ease

    . CS‑

    rela

    ted

    adve

    rse

    even

    ts w

    ere

    obse

    rved

    in 3

    1% o

    f the

    72

    patie

    nts

  • Page 17 of 27Hox et al. Clin Transl Allergy (2020) 10:1

    Tabl

    e 8

    (con

    tinu

    ed)

    Aut

    o‑im

    mun

    e di

    seas

    e +

    stud

    yYe

    arLO

    ESt

    udy

    desi

    gnSt

    udy

    grou

    psCo

    nclu

    sion

    GPA

    Hoff

    man

    et a

    l.19

    923

    An

    open

    ‑labe

    l pilo

    t stu

    dy o

    f wee

    kly

    low

    ‑dos

    e m

    etho

    trex

    ate

    (MTX

    ) plu

    s gl

    ucoc

    ortic

    oids

    (GC

    ) fo

    r tre

    atm

    ent o

    f pat

    ient

    s w

    ith W

    G

    Wee

    kly

    adm

    inis

    trat

    ion

    of M

    TX (a

    t a m

    ean

    stab

    le

    dosa

    ge o

    f 20

    mg)

    and

    GC

    in 2

    9 W

    G p

    atie

    nts

    Mar

    ked

    impr

    ovem

    ent i

    n 76

    %. R

    emis

    sion

    ach

    ieve

    d in

    69%

    . 7%

    impr

    oved

    but

    had

    inte

    rmitt

    ent

    smol

    derin

    g di

    seas

    e th

    at p

    recl

    uded

    tota

    l with

    ‑dr

    awal

    of G

    C, a

    nd 1

    7% h

    ad p

    rogr

    essi

    ve d

    isea

    se

    with

    in 2

    –6 m

    onth

    s of

    sta

    rtin

    g th

    e st

    udy

    trea

    t‑m

    ent.

    Two

    patie

    nts

    who

    initi

    ally

    ach

    ieve

    d re

    mis

    ‑si

    on la

    ter r

    elap

    sed

    afte

    r GC

    dis

    cont

    inue

    d. O

    f th

    ose

    who

    rem

    ain

    in re

    mis

    sion

    (mea

    n fo

    llow

    up

    time

    14.5

    mon

    ths)

    , 72%

    hav

    e no

    t req

    uire

    d G

    C

    for a

    mea

    n pe

    riod

    of 1

    0 m

    onth

    s

    Sarc

    oido

    sis

    Aub

    art e

    t al.

    2006

    3Re

    tros

    pect

    ive

    sing

    le‑c

    ente

    r stu

    dyTw

    enty

    pat

    ient

    s w

    ith h

    isto

    logi

    cally

    pro

    ven

    SNS

    (men

    /wom

    en, 7

    /13;

    mea

    n ag

    e, 3

    2 ±

    9 y

    ear)

    wer

    e co

    mpa

    red

    with

    con

    trol

    pat

    ient

    s w

    ith s

    ar‑

    coid

    but

    with

    out s

    inon

    asal

    (SN

    ) inv

    olve

    men

    t. Ea

    ch p

    atie

    nt w

    as m

    atch

    ed w

    ith 2

    con

    trol

    s fo

    r th

    e da

    te o

    f adm

    ittan

    ce in

    our

    inst

    itutio

    n

    SNS

    had

    sign

    ifica

    ntly

    mor

    e fre

    quen

    t and

    sev

    ere

    invo

    lvem

    ent o

    f vita

    l org

    ans

    than

    con

    trol

    s, ha

    d a

    long

    er h

    isto

    ry o

    f sar

    c