The purpose of this observational study is to assess the real-world safety of luspatercept in Korean participants with myelodysplastic syndrome (MDS) or beta thalassemia. Investigators will enroll participants who will begin treatment with at least 1 dose of luspatercept.
Adult participants 19 years of age or older
Participants who will be treated with luspatercept according to the approved label in the Republic of Korea
Participants who sign the informed consent form
Participants who are prescribed luspatercept for therapeutic indications not approved in the Republic of Korea
Participants for whom luspatercept is contraindicated as clarified in the Korean prescribing information approved by the Ministry of Food and Drug Safety