A Long-term Follow-up Study in Participants Who Received CS-101

A Long-term Follow-up Study Evaluating the Safety and Efficacy of Subjects With β-thalassemia Treated With Base-edited Autologous Hematopoietic Stem Cell (CS-101) Transplantation

This is a study to evaluate the long-term safety and efficacy of CS-101 in participants who received CS-101 in study CS -101-06 (NCT06024876),No investigational drug product will be administered in the study.

This is a study to evaluate the long-term safety and efficacy of CS-101 in participants who received CS-101 in study CS -101-06 (NCT06024876). Subjects in the CS-101-06 study will be entered into long-term follow-up of this study up to 15 years post-infusion at the completion of the last (12-month) followup visit after treatment with CS-101 Injection.

Inclusion Criteria:

• Participants (or his or her legally appointed and authorized representative or guardian) must sign and date informed consent form (ICF) and, where applicable, an assent form
• Participants must have received CS-101 infusion in last study

Exclusion Criteria:

• There are no exclusion criteria