Editas Medicine, Inc. announced new safety and efficacy data in 7 patients with transfusion-dependent beta thalassemia (TDT) treated with renizgamglogene autogedtemcel (reni-cel; formerly known as EDIT-301) in the Phase 1/2 EdiTHAL clinical trial. Reni-cel, the first investigational AsCas12a gene-edited cell therapy medicine, is being studied in the EdiTHAL trial as a potential one-time, durable gene editing medicine for people living with TDT. In the EdiTHAL trial to date, reni-cel was well-tolerated and continues to demonstrate a safety profile consistent with myeloablative conditioning with busulfan and autologous hematopoietic stem cell transplant by all patients (N=7).

Following treatment with reni-cel, all EdiTHAL patients had early and robust increase of total hemoglobin (Hb) and fetal hemoglobin (HbF) and remain transfusion-free at last follow-up for a range of 4.1 to 12.8 months (N=7). All patients in the EdiTHAL trial underwent 1.0 apheresis and mobilization cycle.