Nasal Polyp Score [ Time Frame: Baseline to Week 52 ]
Change from baseline in total Nasal Polyp Score at Week 52. The Nasal Polyp Score is the sum of the right and left nostril scores (maximum 8), as evaluated by nasal endoscopy.
Participant Reported Nasal Congestion [ Time Frame: Baseline to Week 52 ]
Change from baseline in Nasal Congestion score evaluated as part of the Nasal Polyposis Symptom Diary at Week 52. Nasal Congestion Score is captured by asking participants to rate the severity of their worst nasal congestion over the past 24 hours (0-None; 1-Mild; 2-Moderate; 3-Severe).
Secondary Outcome Measures
Nasal Polyp Score [ Time Frame: Baseline to Week 24 ]