Cydrienne Chatto

Cydrienne Chatto is an experienced regulatory science professional with a strong background in the biopharmaceutical industry. Currently serving as Director of Regulatory Science at Day One Biopharmaceuticals since April 2020, Cydrienne has progressed through various roles in regulatory science and operations, including Associate Director and Senior Manager at the same company. Prior experience includes a Senior Manager position at Acerta Pharma B.V. and roles as Manager and Senior Associate in regulatory operations at Acerta Pharma and Gilead Sciences, respectively. Cydrienne began a career in customer service with Lifetouch and transitioned to student employment services at the University of San Francisco, where task management and training were key responsibilities. Holding a Bachelor of Science in Biology from the University of San Francisco, Cydrienne has a solid foundation in the intersection of science and regulatory compliance.