Exploring Definitions and Predictors of Response to Biologics for Severe Asthma

医学 哮喘 恶化 队列 重症监护医学 内科学
作者
Ghislaine Scélo,Trung N. Tran,Tham Le,Malin Fagerås,Delbert R. Dorscheid,John Busby,Mona Al‐Ahmad,Riyad Al‐Lehebi,Alan Altraja,Aaron Beastall,Céline Bergeron,Leif Bjermer,Anne Sofie Bjerrum,Diana Jimena Cano Rosales,Giorgio Walter Canonica,Victoria Carter,Jérémy Charriot,George Christoff,Borja G. Cosío,Eve Denton,María José Fernández Sánchez,João Fonseca,Peter G. Gibson,Celine Goh,Liam G. Heaney,Enrico Heffler,Mark Hew,Takashi Iwanaga,Rohit Katial,Mariko Siyue Koh,Piotr Kuna,Désirée Larenas‐Linnemann,Lauri Lehtimäki,Bassam Mahboub,Neil Martin,Hisako Matsumoto,Andrew Menzies‐Gow,Nikolaos G. Papadopoulos,Pujan Patel,Luis Pérez de Llano,Matthew Peters,Paul Pfeffer,Todor A. Popov,Celeste Porsbjerg,Chin Kook Rhee,Mohsen Sadatsafavi,Camille Taillé,Carlos A. Torres-Duque,Ming‐Ju Tsai,Charlotte Suppli Ulrik,John W. Upham,Anna Von Bülow,Eileen Wang,Michael E. Wechsler,David Price
出处
期刊:The Journal of Allergy and Clinical Immunology: In Practice [Elsevier]
卷期号:12 (9): 2347-2361 被引量:1
标识
DOI:10.1016/j.jaip.2024.05.016
摘要

What is already known about the topic? Response to biologics is variable, partly due to inclusion of different outcomes in response definitions (e.g. exacerbations, long-term corticosteroid dose, symptom control, lung function). Identifying those most likely to respond in real-life has proven challenging. What does this article add to our knowledge? Response and their predictors vary according to outcome assessed. A greater pre-biologic impairment is associated with better response for all outcomes assessed. However shorter asthma duration is associated with better lung function response only. How does the study impact current management guidelines? Our findings suggest a more flexible interpretation to biologic response considering degree of pre-biologic impairment, and identification of characteristics (such as asthma duration) which can affect response to formulate a personalized likelihood of response. Background Biologic effectiveness is often assessed as 'response', a term which eludes consistent definition. Identifying those most likely to respond in real-life has proven challenging. Objective To explore definitions of biologic responders in adults with severe asthma and investigate patient characteristics associated with biologic response. Methods This was a longitudinal cohort study using data from 21 countries, which shared data with the International Severe Asthma Registry. Changes in 4 asthma outcome domains were assessed in the 1-year period pre- and post-biologic-initiation in patients with predefined level of pre-biologic impairment. Responder cut-offs were: ≥50% reduction in exacerbation rate, ≥50% reduction in long-term oral corticosteroid [LTOCS] daily dose, ≥1 category improvement in asthma control, and ≥100mL improvement in FEV1. Responders were defined using single- and multiple-domains. The association between pre-biologic characteristics and post-biologic-initiation response were examined by multivariable analysis. Results 2,210 patients were included. Responder rate ranged from 80.7% (n=566/701) for exacerbation-response to 10.6% (n=9/85) for 4-domain-response. Many responders still exhibited significant impairment post-biologic-initiation: 46.7% (n=206/441) of asthma control-responders with uncontrolled asthma pre-biologic still had incompletely-controlled disease post-biologic-initiation. Predictors of response were outcome-dependent. Lung function-responders were more likely to have higher pre-biologic FeNO (OR:1.20 for every 25ppb increase), and shorter asthma duration (OR:0.81, for every 10-year increase in duration). Higher BEC and presence of T2-related comorbidities were positively associated with higher odds of meeting LTOCS-, control- and lung function-responder criteria. Conclusion Our findings underscore the multi-modal nature of 'response', show that many responders experience residual symptoms post-biologic-initiation, and that predictors of response vary according to outcome assessed. Biologic effectiveness is often assessed as 'response', a term which eludes consistent definition. Identifying those most likely to respond in real-life has proven challenging. To explore definitions of biologic responders in adults with severe asthma and investigate patient characteristics associated with biologic response. This was a longitudinal cohort study using data from 21 countries, which shared data with the International Severe Asthma Registry. Changes in 4 asthma outcome domains were assessed in the 1-year period pre- and post-biologic-initiation in patients with predefined level of pre-biologic impairment. Responder cut-offs were: ≥50% reduction in exacerbation rate, ≥50% reduction in long-term oral corticosteroid [LTOCS] daily dose, ≥1 category improvement in asthma control, and ≥100mL improvement in FEV1. Responders were defined using single- and multiple-domains. The association between pre-biologic characteristics and post-biologic-initiation response were examined by multivariable analysis. 2,210 patients were included. Responder rate ranged from 80.7% (n=566/701) for exacerbation-response to 10.6% (n=9/85) for 4-domain-response. Many responders still exhibited significant impairment post-biologic-initiation: 46.7% (n=206/441) of asthma control-responders with uncontrolled asthma pre-biologic still had incompletely-controlled disease post-biologic-initiation. Predictors of response were outcome-dependent. Lung function-responders were more likely to have higher pre-biologic FeNO (OR:1.20 for every 25ppb increase), and shorter asthma duration (OR:0.81, for every 10-year increase in duration). Higher BEC and presence of T2-related comorbidities were positively associated with higher odds of meeting LTOCS-, control- and lung function-responder criteria. Our findings underscore the multi-modal nature of 'response', show that many responders experience residual symptoms post-biologic-initiation, and that predictors of response vary according to outcome assessed.
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