FASENRA Regulatory Postmarketing Surveillance in Korea

This is a local, prospective, non-interventional, observational study is designed to evaluate safety and effectiveness of FASENRA in real world clinical practice setting in Korea. Adult patients with severe eosinophilic asthma and/or eosinophilic granulomatosis with polyangiitis (EGPA) who are initiating FASENRA for the first time as indicated by the MFDS will be included. At least 45 patients are followed for up 24 weeks and/or 48 weeks. Patients will be treated as part of routine practice at Korean healthcare centers by accredited physicians. Each investigator will sequentially enroll patients who are initiating FASENRA for the first time and receive at least one dose until the target number of patients per center is reached. The characteristics of the study population and the FASENRA treatment schedule should be consistent with those described in the local product information at the time of enrolment (as the local product information may change). The study will enrol patients until the target number is reached. All patients will be evaluated for safety during FASENRA use or for 30 days after their last dose of the surveillance drug if patients discontinued FASENRA before 24 weeks. Investigator's follow up of adverse events can be conducted by mail, phone calls, or e-mail for patients who discontinue early. The decision about the duration and discontinuation of treatment is solely at the discretion of the treating investigator with agreement of the patient.