Question · from the living review of Cystic Fibrosis Treatment →

Is it true that ETI triple therapy significantly reduces sweat chloride concentration and improves nutritional status (BMI, weight gain) in F508del-carrying CF patients?

Established updated weekly · as of

Priors rates this Established — 92 out of 100, updated weekly. Yes — this looks well established. On the claim that ETI triple therapy significantly reduces sweat chloride concentration and improves nutritional status (BMI, weight gain) in F508del-carrying CF patients, its four-agent AI review panel weighs the published, peer-reviewed evidence.

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 Cystic Fibrosis Treatment review.

Related Respiratory & Allergy questions

Is it true that elexacaftor/tezacaftor/ivacaftor (ETI) triple therapy produces large, sustained improvements in FEV1 and reduces pulmonary exacerbations in people with CF carrying at least one F508del CFTR mutation? → Is it true that ivacaftor monotherapy produces sustained improvements in FEV1, sweat chloride, and quality of life in CF patients with gating mutations (class III, particularly G551D)? → Is it true that elexacaftor/tezacaftor/ivacaftor substantially reduces the frequency of pulmonary exacerbations and hospitalisation rates compared with pre-ETI standard of care? → Is it true that inhaled DNase (dornase alfa) reduces sputum viscosity and decreases pulmonary exacerbation frequency and hospitalisation rates in CF? →
Reflects the peer-reviewed evidence as of 17 July 2026 and updates as new studies land. AI can make mistakes. Not medical advice.