Anti‐IgE mAb (omalizumab) vs placebo (on top of topical steroids)Extent of disease ‐ endoscopic score · patients with chronic rhinosinusitis with nasal polyps1 finding from 1 reviewBiologics for chronic rhinosinusitis 2021 · Cochrane Headline outcomes onlyno estimate extracted4 studies · 312 participantsLow