This study is a prospective, open-label, multi-center, non-comparative, observational study to assess safety and effectiveness of Asciminib in the real-world clinical setting in Korean Chronic myeloid leukemia (CML) patients.

The dosage and duration of treatment may be considered and decided by the investigator in accordance with prescribing information of Asciminib.

This study will enroll all patients by total enumeration for those prescribed with Asciminib at physicians' discretion as per locally approved label under usual clinical practice for 2 years after the market launch.

Inclusion criteria

1. Adult patients diagnosed with Ph+ CP-CML and currently receiving or going to receive Scemblix® treatment according to locally approval label
2. Patients who are willing to provide written informed consent prior to study enrollment

Exclusion criteria

1. Patients with contraindication according to locally approved label of Scemblix®
2. Patients who receive or are going to receive any investigational medicine during the observation period

Patients who are going to receive Scemblix® for the first time or those who are currently taking Scemblix® per clinical judgment are eligible and will be prescribed with Scemblix® under routine medical practice.