Dr. Peltier is a Pediatric Hematopoietic Stem Cell Transplantation (HSCT) and Cellular Therapy Physician at Riley Hospital for Children. He is also an immunologist in the Hematologic Malignancies and Stem Cell Biology group at the Indiana University School of Medicine Herman B Wells Center for Pediatric Research. Clinically, he cares for children undergoing HSCT or receiving cellular therapies for malignant or non-malignant conditions. He has a particular clinical interest in caring for children experiencing a complication of HSCT call graft-versus-host disease. Scientifically, he studies how a new class of genes called long noncoding RNAs regulates immunity. He is especially interested in how long noncoding RNAs regulate cellular therapies and the immune response that causes graft-versus-host-disease. The goal of these studies is to find new ways of enhancing the safety of HSCT and cellular therapies by improving the diagnosis, prevention, or treatment of complications from HSCT and cellular therapies.