Theodore Laetsch, MD

Children’s Hospital of Philadelphia – Attending Physician and Associate Professor of Pediatrics

Dr. Laetsch is a pediatric oncologist and leads both the Developmental Therapeutics Program (DVL) and the Very Rare Malignant Tumors Program (VRMTP) at the Children’s Hospital of Philadelphia, as well as holding national leadership roles in each of these areas within the Children’s Oncology Group (COG). While individually very uncommon, together very rare malignant tumors comprise over 10% of childhood cancers. Given the rarity of each individual diagnosis, these cancers have been poorly studied and for many patients there are not standard, defined treatments. As the chair of the Rare Tumors Committee for the Children’s Oncology Group, Dr. Laetsch is working to advance the study of these tumors and define new ways to treat patients. Finally, Dr. Laetsch is a member of the cellular therapy / chimeric antigen receptor (CAR) T-cell team at the Children’s Hospital. Prior to joining the Children’s Hospital in 2020, Dr. Laetsch led the pediatric CAR T-cell program at the University of Texas Southwestern Medical Center.

Dr. Laetsch received his MD from the University of California, San Francisco. He completed his internship and residency in pediatrics at University of Colorado School of Medicine and Denver Children’s Hospital. He completed a fellowship in pediatric hematology-oncology at the Children’s Hospital of Philadelphia.