mx food allergy 2026 - anaphylaxis campaign · product with pal product without pal to s 1. product...
TRANSCRIPT
![Page 1: Mx Food allergy 2026 - Anaphylaxis Campaign · Product with PAL Product without PAL to s 1. Product with PAL with a real risk of inducing an allergic reaction i.e. unsafe to consume](https://reader034.vdocument.in/reader034/viewer/2022042106/5e84b3517b655a77cd156c69/html5/thumbnails/1.jpg)
Paul Turner
MRC Clinician Scientist & Honorary Consultant in Paediatric Allergy & Immunology,
Imperial College London; Honorary Clinical Lecturer, University of Sydney
How will we manage food allergy in 2026
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Will we all be out of a job?
Du T
oit
et
al, J
AC
I 2
01
6
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Will we all be out of a job?
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Will we all be out of a job?
>50% allergic
@ age 5 yrs
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Will we all be out of a job?
>50% allergic
@ age 5 yrs
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Will we all be out of a job?
15.3%
>50% allergic
@ age 5 yrs
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Will we all be out of a job?
8.5% already allergic
@ 4-6 months of age
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• Food allergy is likely to continue to remain a
significant healthcare issue
… although new prevention strategies are
likely to have some impact
• Infant eczema likely to remain a significant
risk factor…
Will we all be out of a job?
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Adrenaline auto-injector devices
0
50
100
150
200
250
300
200
0
200
1
200
2
200
3
200
4
200
5
20
06
200
7
200
8
200
9
201
0
201
1
201
2
150mcg
300+mcg
TOTAL
Thousa
nds o
f pre
scriptions
Data: NHS Prescription Cost Analysis for England, 2000-2012
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Hospital admissions
2000 2005 20100
2
4
6
8
Adm
issio
ns p
er
100,0
00 p
opula
tion Age 0-14
Age 15-59
Age 60+
FOOD
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Hospital admissions
2000 2005 20100
2
4
6
8
Adm
issio
ns p
er
100,0
00 p
opula
tion Age 0-14
Age 15-59
Age 60+
FOOD
?
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Impact of a Food Allergy Diagnosis
• 39% longer to shop
• Significantly greater expense
• Quality of life scores worse than Type 1 DM
• Risk of compromised nutrition
• Risk of fatal reaction
Avery NJ, Assessment of quality of life in children with peanut allergy. Ped All Immunol 2003;14:378-82.
Fox AT et al. Food Allergy as a risk factor for Nutritional Rickets. Ped All Immunol 2004 Dec;15 (6):566-9.
Bock SA et al Fatalities due to anaphylactic reactions to food. J Allergy Clin Immunol. 2001;107(1):191-3.
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IS
ANAPHYLAXIS
ALWAYS
SEVERE
?
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Risk of food-induced anaphylaxis
Umasunthar et al, Clin Exp Allergy. 2013;43:1333-41.
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83% of (245) teenagers with anaphylaxis
don’t use their AAI
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Anaphylaxis is not uncommon,
but death from anaphylaxis is very rare…
Brown et al., MJA (2007)
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Turner et al, Allergy (2016
Anaphylaxis is not uncommon,
but death from anaphylaxis is very rare…
…but also unpredictable
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Perceptions…
Fatal anaphylaxis
rare but unpredictable
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Perceptions…
• Food allergy common
• Allergen labelling
widespread
Fatal anaphylaxis
rare but unpredictable
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“You might tell me that the chance
of dying is 1 in a million…
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“You might tell me that the chance
of dying is 1 in a million…
“…my child is that 1 in a million”
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Management vs treatment
There is currently no treatment for food
allergy in routine clinical practice
Management ≠ Treatment
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Current management… NOW & THEN
• Dietary Avoidance
• Rescue treatment
• Immunotherapy
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Current management… NOW & THEN
• Dietary Avoidance
• Rescue treatment
• Immunotherapy
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Dietary avoidance…
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Allergen disclosure required under law:
• key allergens in ingredients of prepacked foods
Allergen Labelling
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Allergen Labelling
Allergen disclosure required under law:Australia & NZ UK and Europe USA
Wheat Wheat Wheat
Other gluten: rye, barley,
oats, spelt
Other gluten: rye, barley,
oats, spelt, kamut
Egg Egg Egg
Milk Milk Milk
Peanuts Peanut Peanut
Tree nuts Tree nutsTree nuts
and coconut (!)
Soy Soy Soy
Fish Fish Fish
Crustaceans Crustaceans Crustaceans
Molluscs
Celery
Mustard
Sesame Sesame
Lupin
Sulphur dioxide (>10ppm) Sulphur dioxide (>10ppm)
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Allergen Labelling
Allergen disclosure required under law:
• key allergens in ingredients of prepacked foods
Mandatory disclosure applies only to allergens in
ingredients
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Allergen Labelling
Allergen disclosure required under law:
• key allergens in ingredients of prepacked foods
Mandatory disclosure applies only to allergens in
ingredients
Since December 2014, there are now statutory
requirements in terms of labelling:
… but not for potential allergen presence due to
cross-contamination
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Turner et al, 2011Turner et al, BMJ 2011
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Unnecessary avoidance?
• Sensitisation is a poor marker of clinical reactivity:
Osborne et al. JACI 2011; 127:668–676.
Ball et al. PAI 2011; 22:808-12.
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Unnecessary avoidance?
• Sensitisation is a poor marker of clinical reactivity:
• Should peanut-allergic patients avoid all nuts?
• 31% of 94 peanut-allergic children were ‘sensitised’ to a
tree nut
• Only 7 (of 29) were allergic at formal OFC
Osborne et al. JACI 2011; 127:668–676.
Ball et al. PAI 2011; 22:808-12.
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Improved diagnostics?
New in vitro diagnostics:
• Component resolved
diagnostics (CRD)
• Basophil activation test
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Improved diagnostics?
New in vitro diagnostics:
• Component resolved
diagnostics (CRD)
Dang et al. JACI 2012;129:1056-63.
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Improved diagnostics?
New in vitro diagnostics:
• Component resolved
diagnostics (CRD)
• Basophil activation test
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Don’t underestimate the power of a food challenge…
-10 0 10 20
Change in HRQL pre- and post challenge
Self-efficacy assessment
In child,
reportedby parent
In child,self-reported
Improvement in self-efficacy
-40
-30
-20
-10 0 10 20
Food Allergy Quality of Life
In child,reported by parent
In parent
In child,
self-reported
Reduced adverse impact
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Diagnosis: The future ?
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Turner et al, 2011Turner et al, BMJ 2011
Back to avoidance…
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Turner et al, BMJ 2011
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Product with PAL Product without PALH
elp
ful to
all
erg
ic c
on
su
me
rs1. Product with PAL with a real risk of
inducing an allergic reaction
i.e. unsafe to consume
• Proper risk assessment by the food
manufacturer
• Conclusion that the allergen may be
present in the product (despite
allergen management and Good
Manufacturing Practice).
4. Product without PAL with low or
no risk of inducing an allergic
reaction
i.e. safe to consume
• Proper risk assessment by the food
manufacturer
• Conclusion that the allergen is not
present in the product at a level that
is likely to cause an allergic reaction
No
t h
elp
ful to
all
erg
ic c
on
su
me
rs
2. Product with PAL with unknown
risk of inducing an allergic reaction
i.e. may be safe or unsafe to eat
• No proper risk assessment
• No conclusion about allergen
presence can be drawn
5. Product without PAL, with
unknown risk of inducing an
allergic reaction
i.e. may be safe or unsafe to
consume
• No proper risk assessment
• No conclusion about allergen
presence can be drawn
3. Product with PAL with low or no
risk of inducing an allergic reaction
i.e. safe to consume
• Proper risk assessment undertaken
• Manufacturer uses PAL nonetheless
• No conclusion about allergen
presence can be drawn
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Product with PAL Product without PALH
elp
ful to
all
erg
ic c
on
su
me
rs1. Product with PAL with a real risk of
inducing an allergic reaction
i.e. unsafe to consume
• Proper risk assessment by the food
manufacturer
• Conclusion that the allergen may be
present in the product (despite
allergen management and Good
Manufacturing Practice).
4. Product without PAL with low or
no risk of inducing an allergic
reaction
i.e. safe to consume
• Proper risk assessment by the food
manufacturer
• Conclusion that the allergen is not
present in the product at a level that
is likely to cause an allergic reaction
No
t h
elp
ful to
all
erg
ic c
on
su
me
rs
2. Product with PAL with unknown
risk of inducing an allergic reaction
i.e. may be safe or unsafe to eat
• No proper risk assessment
• No conclusion about allergen
presence can be drawn
5. Product without PAL, with
unknown risk of inducing an
allergic reaction
i.e. may be safe or unsafe to
consume
• No proper risk assessment
• No conclusion about allergen
presence can be drawn
3. Product with PAL with low or no
risk of inducing an allergic reaction
i.e. safe to consume
• Proper risk assessment undertaken
• Manufacturer uses PAL nonetheless
• No conclusion about allergen
presence can be drawn
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Do foods with PAL contain allergen?
0 10 20 30 40 50 60
Hefle et al, 2007 (n=179) USA
Pele et al, 2007(n=569) Europe
Ford et al, 2010(n=228) USA
Crotty et al, 2010 (n=81) USA
FSAI, 2011(n=108) Eire
Remington et al, 2013 (n=352) USA
Zurzolo et al, 2013 (n=43) Australia
Robertson et al, 2013 (n=38) Eire
FSA, 2014(n=508) UK
% pre-packed food products with PAL containing allergen
Peanut
Hazelnut
Soya
Milk
Egg
} 0%
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So…
Most foods with PAL don’t contain the allergen
• … but some do, and enough to trigger reactions
• Snack/confectionery items at particular risk
(nut contamination)
Some foods without PAL do contain the allergen
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UK FSA Survey
(2014)
508 products
2012-2014
Remington et al.
Allergy. 2015;70:813-9.
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UK FSA Survey
(2014)
508 products
2012-2014
Remington et al.
Allergy. 2015;70:813-9.
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The reality:
• Wide inconsistencies in labelling
• Significant increase in awareness of the
hazards posed by food allergens …but understanding is still far from complete
• Foods can become contaminated with residues
of allergenic foods at multiple points:
• Harvesting on farms
• Storage & transportation
• Manufacture: shared equipment
• Measures to reduce cross-contamination not
uniform across manufacturers
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The future…
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The future: Aids to avoidance…
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Hypoallergenic foods
Not a novel concept: e.g. hydrolysed cow’s milk-based formula
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Current management… NOW & THEN
• Dietary Avoidance
• Rescue treatment
• Immunotherapy
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Accidental/inadvertent reactions are common:
• 1 in 8 peanut-allergic children experienced at least
one accidental reaction every year1
• Over 50% of 512 infants had at least one reaction
over 3 years follow-up2
Avoidance is, therefore, inadequate on its own
1Nguyen-Luu et al, PAI 2012; 23:133–139. 2Fleischer et al. Pediatrics 2012; 130:e25–32.
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Accidental/inadvertent reactions are common:
• 1 in 8 peanut-allergic children experienced at least
one accidental reaction every year1
• Over 50% of 512 infants had at least one reaction
over 3 years follow-up2
Avoidance is, therefore, inadequate on its own
All food-allergic children need:
• Personalised Allergy Management Plan
• Rescue treatment (which may include AAI)1Nguyen-Luu et al, PAI 2012; 23:133–139. 2Fleischer et al. Pediatrics 2012; 130:e25–32.
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Management of accidental reactions…
Allergy Action Plan
Name:
DOB:
Parent / Carer details:
1) ! 2) !
THIS CHILD HAS THE FOLLOWING ALLERGIES:
AIRWAY: Persistent cough, hoarse voice, difficulty swallowing, swollen tongue
BREATHING: Difficult or noisy breathing, wheeze or persistent cough
CONSCIOUSNESS: Persistent dizziness / Pale or floppy Suddenly sleepy, collapse, unconscious
If ANY ONE of these signs are present:
1. Lie child flat. If breathing is difficult, allow to sit 2. Give EpiPen® or EpiPen® Junior 3. Dial 999 for an ambulance* and say
ANAPHYLAXIS (“ANA-FIL-AX-IS”)
If in doubt, give EpiPen®
After giving Epipen: 1. Stay with child, contact parent/carer
2. Commence CPR if there are no signs of life
3. If no improvement after 5 minutes, give a further EpiPen® or alternative adrenaline autoinjector device, if available
Photo
Keep your EpiPen device(s) at room temperature, do not refrigerate. For more information and to register for a free
reminder alert service, go to www.epipen.co.uk Patient support groups:
http://www.allergyuk.org or www.anaphylaxis.org.uk
! The British Society for Allergy & Clinical Immunology
w w w . b s a c i . o r g
*You can dial 999 from any phone, even if there is no credit left on a mobile.
Medical observation in hospital is recommended after anaphylaxis.
Watch for signs of ANAPHYLAXIS (life-threatening allergic reaction):
Child’s Weight: Kg
Mild-moderate allergic reaction: · Swollen lips, face or eyes
· Itchy / tingling mouth
· Hives or itchy skin rash
ACTION: · Stay with the child, call for help if necessary
· Give antihistamine:
· Contact parent/carer
· Abdominal pain or vomiting
· Sudden change in behaviour
(if vomited, can repeat dose)
This is a medical document that can only be completed by the patient's treating health professional and cannot be altered without their permission.
This plan has been prepared by:
Hospital/Clinic:
! Date:
British Society for Allergy and Clinical Immunology
Additional instructions:
Clinic details
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We need:
1. Recognition
2. Appropriate management in community
3. Appropriate management by healthcare
professionals
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1) Recognition
• Symptoms of anaphylaxis (DIB, LOC, pharyngeal
swelling) are poorly recognized by adolescents1
• One in 7 report difficulty in knowing when to use
their AAI in a US survey (n=1885)3
1Sampson et al. JACI 2006: 117: 1440–5.2Simons et al JACI 2009: 124: 301–6.
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2) Appropriate Management
• 83% of (204) teenagers
with anaphylaxis don’t
use their AAI1
1Noimark et al. CEA 2012: 42:284–92
Allergy Action Plan
Name:
DOB:
Parent / Carer details:
1) ! 2) !
THIS CHILD HAS THE FOLLOWING ALLERGIES:
AIRWAY: Persistent cough, hoarse voice, difficulty swallowing, swollen tongue
BREATHING: Difficult or noisy breathing , wheeze or persistent cough
CONSCIOUSNESS: Persistent dizziness / Pale or floppy Suddenly sleepy, collapse, unconscious
If ANY ONE of these signs are present:
1. Lie child flat. If breathing is difficult, allow to sit 2. Dial 999 for an ambulance* and say
ANAPHYLAXIS (“ANA-FIL-AX-IS”) 3. Stay with child, contact parent/carer 4. Commence CPR if there are no signs of life
Photo
This BSACI Action Plan for Allergic Reactions is for children with mild to moderate allergies, who need
to avoid certain allergens. For people with severe allergies (and at risk of
anaphylaxis) there are BSACI Action Plans which include adrenaline autoinjector instructions. These are available at our website, www.bsaci.org
For further information consult NICE Clinical Guidance CG116 Food allergy in children and young
people at http://guidance.nice.org.uk/CG116 Patient support groups:
http://www.allergyuk.org or www.anaphylaxis.org.uk
! The British Society for Allergy & Clinical Immunology
w w w . b s a c i . o r g
*You can dial 999 from any phone, even if there is no credit left on a mobile.
Medical observation in hospital is recommended after anaphylaxis.
Watch for signs of ANAPHYLAXIS (life-threatening allergic reaction):
Mild-moderate allergic reaction: · Swollen lips, face or eyes
· Itchy / tingling mouth
· Hives or itchy skin rash
· Abdominal pain or vomiting
· Sudden change in behaviour
ACTION: · Stay with the child, call for help if necessary
· Give antihistamine:
· Contact parent/carer
(if vomited, can repeat dose)
Child’s Weight: Kg
This is a medical document that can only be completed by the patient's treating health professional and cannot be altered without their permission.
This plan has been prepared by:
Hospital/Clinic:
! Date:
British Society for Allergy and Clinical Immunology
Additional instructions:
Clinic details
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NOT JUST PATIENTS….
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NOT JUST PATIENTS….
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How to use Adrenaline auto-injectors…
MAMA Study:
• Only 4 out of 10 mothers
were able to successfully
administer adrenaline in an
anaphylaxis scenario,
6 weeks after training
• 30% failed to remove cap
• 18% insufficient time
• 8% wrong end
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• Only two doctors (2%) demonstrated use correctly.
• Most frequent errors:
57% - not holding pen in place for >5 seconds
21% - failure to apply pressure to activate
16% - self-injection into thumb
• 60% failed to use device correctly even after reading
instructions
• In 37% NO adrenaline would have been administered
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Refractory anaphylaxis
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What we do know:
• 83% of (204) teenagers with anaphylaxis don’t use their
AAI1
• Symptoms of anaphylaxis (DIB, LOC, pharyngeal
swelling) are poorly recognized by adolescents2
• One in 7 report difficulty in knowing when to use AAI in
a US survey (n=1885)3
• Adrenaline IM doesn’t always work4
1Noimark et al. CEA 2012: 42:284–92 2Sampson et al. JACI 2006: 117: 1440–5.3Simons et al JACI 2009: 124: 301–6. 4Pumphrey & Gowland, JACI 2007;119:1018-9.
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Do we need to shift our focus?
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Current management… NOW & THEN
• Dietary Avoidance
• Rescue treatment
• Immunotherapy
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Immunotherapy to food
Nowak-Wegrzyn & Sampson. JACI 2011; 127(3):558-73
Nowak-Wegrzyn & Fiocchi, Curr Opin Allergy Clin Immunol. 2010; 10:214-9.
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Studies completed or underway…
Egg Milk Peanut Other
Subcutaneous ✓
Baked, oral ✓ ✓
Native, oral ✓ ✓ ✓ ✓
SLIT ✓ ✓ ✓
Epicutaneous ✓ ✓
Tolerising peptides ✓ ✓
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Safety
• Desensitisation typically achieved in >80%
• High rate of adverse events during SOTI:
• 70-80% experience adverse events
• Rates of ‘anaphylaxis’ vary
• Severity of anaphylaxis vary
• Up to 10% of patients withdraw
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Desensitisation vs long term tolerance…
Nowak-Wegrzyn & Sampson. JACI 2011; 127(3):558-73
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Desensitisation vs long term tolerance…
Peanut 12 (50%) of 24 children who completed
SOTI were tolerant after 2 months1
Egg 11 (37%) of 30 children who completed
SOTI were tolerant after 2 months2
Cow’s
Milk
10 (31%) of 32 children were able to
tolerate at least one portion of CM daily
1-5 years after completing SOTI3
1Vickery et al. JACI 2014 Feb;133(2):468-475.e6.2Burks et al. N Engl J Med 2012; 367:233–243.3Keet et al. JACI 2013; 132:737–739; e6.
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Some clinical concerns…
• How to select those suitable for SOTI
• Risk of increasing sensitisation?
• Risk of inducing a false sense of security in
those only temporarily desensitised
• Effect on QoL of patient
• Potential for causing other problems e.g. EoE
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THE FUTURE
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THE FUTURE: Dietary avoidance
• Accurate diagnosis and therefore appropriate
avoidance
• Clearer food labelling
• Apps to help avoid potential allergens
• Better understanding when eating out
• Hypoallergenic foods
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THE FUTURE: Rescue treatment
• Recognition of symptoms
• More intuitive AAI
• Apps to aid AAI use/emergency services
• More training for HCPs
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THE FUTURE: Treatment options
• Use of baked CM / egg
• More research into SOTI:
• Safer protocols
• Better understanding of long-term
tolerance induction
• SOTI as primary prevention
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THE FUTURE… is already here?
• Accurate diagnosis and therefore appropriate avoidance
• Clearer food labelling
• Apps to help avoid potential allergens
• Better understanding when eating out
• Hypoallergenic foods
• Recognition of symptoms
• More intuitive AAI
• Apps to aid AAI use/emergency services
• More training for HCPs
• Baked CM / Egg
• More research into SOTI:
• Safer protocols
• Better understanding of long-term tolerance induction
• SOTI as primary prevention
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