A Study To Evaluate The Efficacy, Safety, Pharmacokinetics, And Pharmacodynamic Effects Of GDC-6599 In Patients With Chronic Cough

The main study (Part A) enrolled participants with chronic refractory cough (CRC) with asthma with/without atopy as well as participants with unexplained chronic cough (UCC); the substudy (Part B) enrolled participants with chronic obstructive pulmonary disease (COPD) with/without chronic bronchitis (CB). The main objective of the study was was to evaluate the efficacy of GDC-6599, as compared with placebo, in participants with CRC with asthma or UCC (i.e. across all participants in main study - Part A, regardless of the disease background).