Regulatory Post-Marketing Surveillance of Xolair® for Chronic Rhinosinusitis With Nasal Polyps

This is a 24-week, prospective, open-label, multi-center, single-arm, observational, post-marketing surveillance study under routine clinical practice and does not impose a therapy, visit, or assessment. The study design was approved by the Korean health authority. The purpose of this study is not to answer scientific hypotheses, but to describe the incidences of all potential adverse events (AEs), serious adverse events (SAEs), and unexpected AEs not listed in the local label information occurring in Korean patients under routine clinical practice following the approved local label information.