Question · from the living review of Severe Asthma Management →

Is it true that blood eosinophil count of 300 cells/µL or greater is the primary predictive biomarker for clinical response to anti-IL-5 therapy in severe asthma?

Uncertain updated weekly · as of

Priors rates this Uncertain — 63 out of 100, updated weekly. It is genuinely uncertain. On the claim that blood eosinophil count of 300 cells/µL or greater is the primary predictive biomarker for clinical response to anti-IL-5 therapy in severe asthma, its four-agent AI review panel weighs 8 primary peer-reviewed studies.

RefutedDoubtfulUncertainLikelyEstablished
where this sits on Priors’ scale of how settled the evidence is

How we got this answer. Priors runs each claim through a panel of four AI agents, each acting as a specialist expert reviewer. They read the published, peer-reviewed studies behind the question, judge how strong, consistent and reliable the evidence is, and turn that judgment into a single rating from 0 to 100 — refreshed every week as new studies appear, so it reflects where the evidence stands today, not a one-off verdict.

The traceable studies behind this rating — and the panel’s single strongest counter-argument to it — are in Priors’ full Severe Asthma Management review.

Related Respiratory & Allergy questions

Is it true that dupilumab reduces exacerbation rates and improves lung function in patients with moderate-to-severe asthma with elevated type 2 inflammatory biomarkers? → Is it true that anti-IL-5 agents (mepolizumab, benralizumab, reslizumab) significantly reduce annual exacerbation rates in patients with severe eosinophilic asthma? → Is it true that omalizumab (anti-IgE) reduces asthma exacerbations and unscheduled healthcare visits in patients with severe allergic asthma? → Is it true that anti-IL-5 therapy enables significant oral corticosteroid dose reduction in patients with OCS-dependent severe eosinophilic asthma? →
Reflects the peer-reviewed evidence as of 17 July 2026 and updates as new studies land. AI can make mistakes. Not medical advice.