novelandemergingtherapiesfor paentswithdiabetesandckd · ft011 has been studied in the ren(2)...
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Novel and emerging therapies for pa3ents with Diabetes and CKD
A/Prof Robyn Langham St. Vincent’s Hospital Fitzroy, Australia KDI
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Disclosures
• Past consultant for Fibrotech Therapeu3cs
• Speaker fees; Amgen, Shire, Janssen-‐Cilag
• Advisory Board; Janssen-‐Cilag, Orphan, MSD, GSK, Amgen. KDI
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“… diabe3c nephropathy can be viewed as an inflammatory disease triggered by disordered
metabolism.” KDI
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Protein Kinase Cβ Inhibi3on AXenuates Osteopon3n Expression, Macrophage Recruitment, and Tubulointers33al Injury in Advanced Experimental Diabe3c Nephropathy
Kelly et al., JASN 2005
KDIGO
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Kanasaki et al, Front Endocrinol 2013
Disease of fibroprolifera.on Probably a disease of mul.ple redundant pathways.
NOX1/NOX4
Monocyte infiltra.on CCR2 inhibi3on VAP-‐1 inhibi3on Tie2 receptors
Stat 4 antagonists PDE4 inhibitors MCR inhibi.on KDI
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Reac3ve Oxygen Species – NOX inhibitors
PNAS 2000 KDIGO
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The NOX Family of ROS-‐Genera3ng NADPH Oxidases: Physiology and Pathophysiology Bedard and Krause Physiological Reviews 2007
NAPDH Oxidases – phagocytosis of microbes
KDIGO
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McCann and Roulston, Brain Sci. 2013
NAPDH Oxidases – non-‐phagocy3c
KDIGO
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Bedard and Krause Physiological Reviews 2007
Non-‐phagocy3c NOX first described as phagocy3c (resp burst – CGD) Now, non-‐phagocy3c..) In kidney Nox 4 is the most important, ROS is important in regula3on of cell cycle etc, but excess of ROS -‐ = disease. NOX 4 may be mechanosensi3ve.. Although advances have been made in the characteriza3on of renal Nox isoforms and mechanisms of ROS genera3on, the exact roles of NADPH oxidase–derived ROS and specific Nox isoforms in the kidney s3ll remain unclear. It is becoming increasingly apparent that Nox and ROS are involved in the regula3on of renal hemodynamics and renal ion transport. ROS also mediate the effects of numerous pathologic s3muli, such as hyperglycemia and AngII, on renal structure and func3on. Through ac3ons on sodium reabsorp3on and on renal hemodynamics, ROS could be a key regulator of BP in different pathologic condi3ons associated with increased NADPH oxidase ac3vity in the kidney. Growing evidence indicates a role for Nox4 in renal fibrosis and development of diabe3c nephropathy, at least in experimental models. Accordingly, there has been much interest in advancing strategies to selec3vely inhibit Nox4 as a poten3al target in the treatment of kidney disease in diabetes. Despite the developments in renal Nox biology, there is s3ll a paucity of informa3on on the exact physiologic and pathologic roles of NADPH oxidases in the kidney and the clinical significance of these systems in humans remains unclear. Improved research tools and new experimental mouse models should advance the field.
In kidney Nox 4 is the most important, ROS is important in regula3on of cell cycle, also involved in renal haemodynamics and renal ion transport NOX 4 may be mechanosensi3ve -‐ excess of ROS -‐ = disease.
KDIGO
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ROS-‐Regulated Signaling Pathways in Diabe3c Nephropathy
Lee H B et al. JASN 2003;14:S241-S245
©2003 by American Society of Nephrology
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J Am Soc Nephrol. 2010
JASN January 1, 2010 vol. 21 no. 1 93-‐102
JASN June 2014 vol. 25 no. 6 1237-‐1254
Gorin et al., Am J Physiol Renal Physiol (epublished Feb 2015)
KDIGO
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www.genkyotex.com
Safety and Efficacy of Oral GKT137831 in Pa.ent With Type 2 Diabetes and Albuminuria NCT02010242 12 weeks, bd dose of GKT137831, 100mg bd and 200mg bd, Endpoints UACR, delta UACR, secondary endpoints erec.le dysfunc.on and neuropathic pain.
KDIGO
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American Journal of Respiratory Cell and Molecular Biology, 2012
Hepatology 2012
Circula3on – online Jan 2015 KDIGO
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MicroRNA-‐21 – a poten3al an3-‐fibro3c
miR-‐21 reduces metabolism of faXy acids, increases reac3ve oxygen species and toxin forma3on/accumula3on.
RG-‐012
Lai et al., JASN 2014
KDIGO
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Monocyte infiltra3on – CCL2
KDIGO
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CCL2 (MCP-‐1)
Recruits monocytes, memory T-‐cells and dendri3c cells to sites of inflamma3on produced either by 3ssue injury or infec3on. Receptors – CCR2 and CCR4 (G-‐protein coupled receptors) ?Role of hypomethyla3on of CpG sites within the CCL2 promoter region in increased CCL2 levels in serum of pa3ents with diabetes. Well-‐described role in experimental renal fibrosis, also is involved in the inflammatory milleau of diseases of neurodegenera3on Bindarit (Phase 2a) reduc3on in CCL2 produc3on (NCT01109212)
KDIGO
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CCR2 antagonist
CCX-‐140, completed and reported phase 2 – 52 week data from Ph II clinical trial – oral – 332 pa3ents, placebo, 5mg, 10mg. – 5mg daily, reduc3on in UACR (p<0.0148) – AXenuated annual decline eGFR (1.3 vs 2.3) – NCT01440257 – hXp://www.chemocentryx.com/product/CCR2.html
KDIGO
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Emap3cap pegol (NOX-‐E36) NOXXON Pharma Phase 2A, presented ERA/EDTA 2014 RCT phase 2a, 72 pa3ents with Type 2 diabetes and albuminuria SC administra3on, twice a week, reduc3on in ACR (32% lower at 12 weeks), 50% reduc3on 31% v6%) Benefits on glucose control
CCR2 antagonist
KDIGO
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Spieglemer – RNA, DNA based aptemers, 3D structure, stabilised against cleavage by naturally occurring endo and exonucleases. ..
Vater and Klussman, Drug Disc Today, Jan 2015
KDIGO
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Proximagen
Novel GPCR ?type -‐has other CCR2 antagonist for neurodegen disease
hXp://proximagen.com/
KDIGO
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VAP-‐1 inhibitor
ASP8232 – a novel VAP-‐1 inhibitor Phase 1 clinical trial, oral drug NCT02218099
• VAP-‐1 is expressed in pericytes and vascular endothelium and is involved in leukocyte extravasa3on to inflammed 3ssues
• It is an enzyme (monoamine oxidase) and an adhesion molecule for lymphocytes.
KDIGO
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Second messengers
KDIGO
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February 2015, 26 (2)
Open-‐label, prospec3ve RCT n=169, PTF 82, control 87 • smaller decrease in eGFR and a greater
reduc3on of residual albuminuria. • Reduc3on in TNF alpha
KDIGO
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cAMP preserva3on – PDE inhibitors
• PF–00489791 – PDE5 specific
– Blood vessel relaxa3on, improved blood flow – Phase 2, NCT01200394
• Finished phase 2a, 16 weeks, UACR, eGFR
Hypertension, 2009
KDIGO
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cAMP – PDE inhibitors
• CTP-‐499 – PDE3,4 and 5 – Concert pharma – Poster, Phase 1, phase 2 ac3ve in Type 2 CKD, abstract NKF spring mee3ng
• Roflumolast (Takeda GmbH), Daliresp – PDE4 – Approved for COPD – Preclinical efficacy in STNX model of CKD
KDIGO
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Intracellular steroid receptors
Perico et al., Nat Rev Drug Disc 2008
KDIGO
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BAY 94-‐8862 -‐ Finerenone
KDIGO
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BAY 94-‐8862 -‐ Finerenone
ARTS-‐DN; NCT01874431
KDIGO
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Mineralocor3coid receptors.. MT-‐3995
KDIGO
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Inflammatory cytokine cascade JAK-‐STAT pathway inhibitors
KDIGO
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KDIGO
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Stat-‐4 antagonist
• DiaKine – oral drug, DT 22669 • JAK Tyrosine kinases • Acquired by Islet Sciences, interest in preven3on of islet cell senescence
• preclinical studies failed to prevent rodent diabetes
• Re3nopathy/nephropathy DT 23552
KDIGO
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JAK1/JAK2 inhibitor barici:nib
• Oral agent • Phase III development as a poten3al treatment for
rheumatoid arthri3s.
KDIGO
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Aerpio
• Tie2Rec ac3vator – angiopoie3n receptor, tyrosine kinase inhibitor
• Ang1 and Ang4 func3on as agonis3c or ac3va3ng ligands for Tie2, whereas Ang2 and Ang3 behave as compe33ve antagonists.
• AKB-‐9778 is a small molecule, Tie-‐2 ac3va3ng agent that effec3vely blocks vascular leak and pathologic angiogenesis in mul3ple disease condi3ons. It is ini3ally being developed for the treatment of diabe3c macular edema.
• HPTP beta mAB
KDIGO
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The dilemma…
• Mul3ple pathways • Risk of redundancy when one pathway is blocked
• IPF an epithelial-‐fibroblas3c disease – inflamma3on is a secondary event
KDIGO
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Understanding disease pathophysiology – network analysis
KDIGO
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VAP-‐1 inhibitor
Nakao et al., Am J Path, 2011
KDIGO
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Tranilast – a known but old anti-fibrotic
A. Mifsud et al, Nephron Physiol 2003 B. Soma et al., Nephron 2002
KDIGO
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Tranilast n-(3,4-dimethyoxycinnamoyl) anthranilic acid
>130 Fibrotech compounds
• Novel, synthesized on a kilogram scale, orally bioavailable, stable and crystalline.
• CMC – AMRI, New York Extensive preclinical studies, at 50-1000mg/kg/
day with no aberrant pathology seen in any organ, normal FBE, normal renal function. FT-011
better tolerability than Tranilast
Tranilast
Fibrotech compounds
FT-011
Lead compound – FT-011 KDIGO
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FT011 has been studied in the Ren(2) diabetic rat, and other STZ rat models with both early and later intervention demonstrating a dose dependant reduction in urinary ACR, reduction in tubulo-interstitial fibrosis, glomerulosclerosis and abrogation of GFR decline. (*Gilbert et al, PLoS One, 2012). Efficacy has also been demonstrated in the STNx model of CKD. In head to head studies, FT011 has been demonstrated to be more potent than tranilast
A. Tubulointerstitial fibrosis* B. Glomerulosclerosis*
Dose dependant reduction in urinary ACR
Preclinical studies – FT011 and DN
KDIGO
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Phase 1 clinical trial summary
• FT011 has been tested at up to 1gm as a single dose with no adverse effects
• FT011 dosed at 500mg/day for 14 day period with no adverse events
• FT011 has excellent PK with half life of ~10 hours
KDIGO
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1
2
4
3
A. ‘Omic data
List of proteins, genes or metabolites from ‘omic data sets
B. Interactome Model
Systems Biology – Network analysis
D. Network Topology
C. Network Clusters
Func3on and Priori3sa3on
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A comprehensive pathway map of CKD.
Martini S et al. JASN 2013
Network graph of 97 CKD-associated pathway nodes
KDIGO
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CKD associated pathways are shared between renal diseases.
Martini S et al. JASN 2013
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Disease-specific analyses shows a close interconnection between lupus nephritis, IgA nephritis, and diabetic
nephropathy.
Martini S et al. JASN 2013
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Hodgin et al, Diabetes 2013
Iden3fica3on of Cross-‐Species Shared Transcrip3onal Networks of Diabe3c Nephropathy in Human and Mouse Glomeruli
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The Molecular Phenotype of Endocapillary Prolifera3on: Novel Therapeu3c Targets for IgA Nephropathy
Hodgin et al, PlosOne 2014
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hXp://www.maayanlab.net/DPS/
The Molecular Phenotype of Endocapillary Prolifera3on: Novel Therapeu3c Targets for IgA Nephropathy
Hodgin et al, PlosOne 2014
• Defined dis3nct molecular profile of a pathologic phenotype associated with progressive renal insufficiency in IgAN.
• Iden3fica3on of new therapeu3c strategies for IgAN.
KDIGO
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Top 10 pathways differen3ally regulated by FT011 in treated and untreated diabe3c animals.
KDIGO
![Page 51: Novelandemergingtherapiesfor paentswithDiabetesandCKD · FT011 has been studied in the Ren(2) diabetic rat, and other STZ rat models with both early and later intervention demonstrating](https://reader034.vdocument.in/reader034/viewer/2022042315/5f03b0297e708231d40a4854/html5/thumbnails/51.jpg)
Network analysis of FT011 pathway mechanisms
KDIGO
![Page 52: Novelandemergingtherapiesfor paentswithDiabetesandCKD · FT011 has been studied in the Ren(2) diabetic rat, and other STZ rat models with both early and later intervention demonstrating](https://reader034.vdocument.in/reader034/viewer/2022042315/5f03b0297e708231d40a4854/html5/thumbnails/52.jpg)
7 of 10 pathways common in human and animal DN is are affected by FT011
KDIGO
![Page 53: Novelandemergingtherapiesfor paentswithDiabetesandCKD · FT011 has been studied in the Ren(2) diabetic rat, and other STZ rat models with both early and later intervention demonstrating](https://reader034.vdocument.in/reader034/viewer/2022042315/5f03b0297e708231d40a4854/html5/thumbnails/53.jpg)
New therapies -‐ ?the future
• Return to the renal biopsy – Pharmacotranscriptomics
• Alternate dosing schedules – Rest periods, prevent satura3on/adapta3on KDI
GO