ASH Annual MeetingBleeding DisordersMeeting CoverageMultimedia Tippi MacKenzie: In Utero Hematopoietic Cell Transplantation for Hematologic Conditions Monday, December 14, 2020 In utero hematopoietic cell transplantation showed promise in a phase 1 clinical trial involving fetuses with alpha thalassemia major. Here, Tippi Mackenzie, MD, discusses interim results from the study.