1410 Asthma State of the Art (Khurana) · novel therapy n=47. Validated questionnaires can improve...
Transcript of 1410 Asthma State of the Art (Khurana) · novel therapy n=47. Validated questionnaires can improve...
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Asthma State Of The Art
Sandy Khurana, MD, FCCPDirector, Mary Parkes Asthma Center
University of Rochester, NY
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Grant support – GSK
I will not be discussing off-label use for any drugs or devices
Disclosures
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• Describe recent advances in our understanding of asthma • Identify factors contributing to poor control of asthma • Discuss a systematic approach to phenotyping asthma, and applying
traditional & advanced therapies
Objectives
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Prevalence of symptoms of asthma worldwide (World Health Survey 2002–03)
T To, S Stanojevic, G Moores, et al. BMC Public Health, 12 (2012), p. 204
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Pavord ID et al. Lancet 2018; 391: 350
Asthma definitions over time…
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GINA 2017, Box 3-5, Step 5 (8/8)
Other controller
options
RELIEVER
STEP 1 STEP 2 STEP 3
STEP 4
STEP 5
Low dose ICS
Consider low dose ICS
Leukotriene receptor antagonists (LTRA)Low dose theophylline*
Med/high dose ICSLow dose ICS+LTRA
(or + theoph*)
As-needed short-acting beta2-agonist (SABA)
Low dose ICS/LABA**
Med/high ICS/LABA
PREFERRED CONTROLLER
CHOICE
add-on treatment
As-needed SABA or low dose ICS/formoterol#
Add tiotropium*�High dose ICS + LTRA (or + theoph*)
Add low dose OCS
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GINA 2017, Box 3-5, Step 5 (8/8)
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What percentage of patients with doctor-diagnosed asthma may not have current asthma?
A. Less than 10 percentB. Less than 20 percentC. 30-40%D. Greater than 60%
Question
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What percentage of patients with doctor-diagnosed asthma may not have current asthma?
A. Less than 10 percentB. Less than 20 percentC. 30-40%D. Greater than 60%
Question
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Aaron et al. JAMA 2017
Current Asthma ruled-outin 33%!
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Nonadherence in the era of expensive advanced therapies
Lee et al. ERJ 2018
All patients n=69
Patients eligible for novel therapy n=47
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Validated questionnaires can improve detectionof comorbidities in difficult asthma. N=86
Radhakrishna N. Journal of Asthma. 2016
The average time for questionnaire administration was approximately 40 minutes.
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Association, prevalence and treatment outcomes ofcomorbidities in difficult asthma
Adapted from Radhakrishna N. Journal of Asthma. 2016
Comorbidity Associated with asthma? Prevalence in asthma Does treatment improve asthma?
Sino-nasal disease AR Yes 80% # Yes
Sino-nasal disease CRS Yes 70-74% * Yes
GERD Yes 59% # Inconsistent
OSA Yes 75-95% * Yes
VCD Yes 75% * Inconsistent
DB Yes 29% # Yes
Anx/Dep Yes 49% * Yes
* Difficult asthma# All asthma
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GINA 2017, Box 3-5, Step 5 (8/8)
Other controller
options
RELIEVER
STEP 1 STEP 2 STEP 3
STEP 4
STEP 5
Low dose ICS
Consider low dose ICS
Leukotriene receptor antagonists (LTRA)Low dose theophylline*
Med/high dose ICSLow dose ICS+LTRA
(or + theoph*)
As-needed short-acting beta2-agonist (SABA)
Low dose ICS/LABA**
Med/high ICS/LABA
PREFERRED CONTROLLER
CHOICE
Refer for add-on
treatment e.g.
tiotropium,*�anti-IgE, anti-IL5*
As-needed SABA or low dose ICS/formoterol#
Add tiotropium*�High dose ICS + LTRA (or + theoph*)
Add low dose OCS
Suggested stepwise approach to mitigate impairment and risk
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In terms of weeks of well controlled asthma, budesonide-formoterol was:Superior to as needed terbutaline Inferior to Budesonide maintenance
SYGMA 1: Budesonide/Formoterol given as needed in mild asthma
O’Byrne PM et al. NEJM 2018; 378: 1865
In terms of exacerbations: As-needed budesonide/formoterol was non-inferior to maintenance ICS with 1/5th of the ICS dose
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Global Asthma Mortality Rates 1960-2012
Lancet 2017
bronchodilator era inflammation era
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• Progress against key outcomes has stalled• Pitfalls in diagnosis…absent ‘gold standard’• Better understanding of complex pathophysiology• Identification of different treatable traits• Management guided by these traits appears more effective
Time for change?
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Francis Rackemann did a detailed longitudinal clinical study of asthma in the first half of the 20th century and was the first to highlight the heterogeneity of asthma.
“surely it is hard to believe that the wheeze that comes to the young school girl for a day or two in the ragweed season is the same disease as that which develops
suddenly in the tired business man or in the harassed housewife and pushes them down to the depths of depletion and despair. The problem is still wide open: the
approach is not at all clear”
FM Rackemann J Lab Clin Med, 12 (1927), 1185-1197Pavord ID et al. After Asthma: redefining airways diseases. Lancet 2018; 391: 350
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Complex gene/environment interactions…
Subramanian & Khatri. Clin Chest Med 40 (2019) 107–123
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…result in different clinical expressions
Wenzel Nature Medicine 2012
Type 2 Non-Type 2
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Comparative effect sizes for exacerbation rates (Mepolizumab)
Pavord ID et al. Lancet 2018; 391: 350Zeiger RS. J Allergy Clin Immunol. 2006; 117: 45-52
And variable treatment responses
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Allergic Eosinophilic
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Nonallergic Eosinophilic
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Neutrophilic
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Currently available biologic therapies DO NOT target
A. Eosinophilic asthmaB. Allergic AsthmaC. T2 low asthmaD. All of the above
Question
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Currently available biologic therapies DO NOT target
A. Eosinophilic asthmaB. Allergic AsthmaC. T2 low asthmaD. All of the above
Question
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Type 2 Biomarkers
Lim HF & Nair P. Semin Respir Crit Care Med 2018;39:56
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Allergic Eosinophilic Nonallergic Eosinophilic Neutrophilic
Anti-IgE
Anti-TSLP
Anti-IL4/13Anti-IL5 Anti-IL5R
Type 2 asthma and therapeutic targets
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Biologics for Type 2 Asthma
ICER 2018
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Biologics for Type 2 Asthma - Efficacy
Rate Ratio for exacerbations
Mean Difference AQLQ
Mean Difference ACQ
ICER 2018
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Blood eosinophil count predicts response to omalizumab
Casale TB et al. Allergy 2017
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Blood eosinophil count predicts response to mepolizumab
Ortega et al. Lancet Respir Med. 2016; 4:549-56
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Effect of dupilumab on exacerbation and lung function by baseline Eos and FeNO
Castro et al. NEJM 2018 ; 378:2486
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Which of the following biologics has NOT been studied for steroid sparing efficacy?A. MepolizumabB. ReslizumabC. BenralizumabD. Dupilumab
Question
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Which of the following biologics has NOT been studied for steroid sparing efficacy?A. MepolizumabB. ReslizumabC. BenralizumabD. Dupilumab
Question
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Steroid-sparing effect of biologics
Bel N Engl J Med 2014 ; 371:1189Nair N Engl J Med 2017; 376:2448
Rabe N Engl J Med 2018; 378:2475
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Corren J. NEJM 2017
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Anti-TSLP: Effect by Th2 status
Corren J et al. NEJM 2017
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N=420Symptomatic asthma despite ICS/LABAAzithromycin 500 mg thrice weekly vs placebo for 48 weeks
Azithromycin & Asthma
Gibson, Peter G et al. The Lancet 2017
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Azithromycin asthmaAMAZES
Gibson, Peter G et al. The Lancet 2017
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Chupp ERJ 2017
Bronchial Thermoplasty PAS 2 StudyReal world effectiveness – 3 year follow-up
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Katial RK et al. J Allergy Clin Immunol Pract 2017;5:S1-S14
‘Traditional’ vs. ‘Personalized’
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• Burden of asthma remains high and mortality rates have stalled
• Heterogeneity and complex pathophysiology increasingly recognized. Multiple mechanisms in play. Therefore, a ‘one-size’ approach is no longer appropriate.
• Before pursuing advanced therapies, a systematic assessment is critical to evaluate correct diagnosis and address modifiable risk factors
• Recent studies suggest a role for as needed ICS/fast acting LABA for mild asthma
• Several biologics targeting type 2 pathways are effective in reducing exacerbations and steroid dependence. Limited options for non-eosinophilic asthma.
Summary
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