Dr. Haydar Frangoul is medical director of pediatric hematology/oncology at HCA Healthcare’s Sarah Cannon Research Institute and TriStar Centennial Medical Center in Nashville, where Gray has volunteered for a study using CRISPR to treat sickle cell disease.

Dr. Haydar Frangoul is medical director of pediatric hematology/oncology at HCA Healthcare’s Sarah Cannon Research Institute and TriStar Centennial Medical Center in Nashville, where Gray has volunteered for a study using CRISPR to treat sickle cell disease.