The main purpose of this study is to evaluate the efficacy and safety of lebrikizumab in participants with chronic rhinosinusitis and nasal polyps treated with intranasal corticosteroids. The study will last about 18 months.
Physician-diagnosed chronic rhinosinusitis (CRS) with bilateral nasal polyps (NP).
Prior treatment with systemic corticosteroids (SCS) within the last 2 years (or a medical contraindication or intolerance to SCS), prior surgery for NP, or both.
Endoscopic bilateral NPS score of at least 5 out of 8, with a minimum score of 2 in each nasal cavity performed at screening and baseline.
Nasal congestion with moderate or severe symptom severity (score 2 or 3) at screening and a weekly average severity score of at least 1 (range 0 to 3) at randomization, and
Have received a dose of lebrikizumab.
Have received treatment with any rescue medication and/or have the need for surgery for NP during screening and/or run-in period.
Allergen immunotherapy (subcutaneous immunotherapy [SCIT]/sublingual immunotherapy [SLIT]) initiated within 6 months prior to screening, that is not on a stable dose (3 months prior to screening).
Has received a biologic treatment approved for use in CRSwNP, asthma, or AD, even if administered to treat a different condition, within 4 months or 5 half-lives, whichever is longer, prior to screening.