Day One Biopharmaceuticals, Inc. announced Elly Barry, MD, has been promoted to Chief Medical Officer where she will lead the execution and expansion of its clinical development programs. Most recently, Dr. Barry was Head of Clinical Development at Day One where she played an integral role in the execution of the Company?s clinical programs. Prior to joining the Company in 2021, Dr. Barry was Global Clinical Lead for Pediatric Oncology at Pfizer, as well as Head of Pfizer?s Pediatric Oncology Leadership Team where she oversaw multiple oncology clinical programs. She has replaced Raphaël Rousseau, MD, PhD, who has transitioned into a strategic advisory consulting role into the second quarter of 2024.