Safety and effectiveness study of a skin cancer treatment in Korea

This is a safety and effectiveness study of mogamulizumab, a medication designed to treat two rare types of skin lymphoma called mycosis fungoides and Sézary syndrome. The study is being conducted in Korea to monitor how well the medication works and what side effects patients experience when using it as an approved treatment. Researchers will collect information from patients who are already receiving this treatment as part of their regular medical care.

After a medication is approved and available to patients, regulators require ongoing monitoring to make sure it's truly safe and effective in real-world use. This study fills that important gap by tracking how the medication performs outside of controlled clinical trials, especially in different groups of patients.