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A. Jo Chien, MD

A. Jo Chien, MD, is an assistant clinical professor of medicine at the Helen Diller Family Comprehensive Cancer Center at the University of San Francisco. She focuses her practice on the treatment of breast cancer, especially those that are HER2-positive.

Dr. Chien’s research interests emphasize HER2-positive disease, breast cancer in young women, and cancer treatment and fertility. She has been recognized with many awards, including the American Society of Clinical Oncology’s (ASCO) Young Investigator Award, Foundation Merit Award, and Postdoctoral Fellowship.  Dr. Chien is a member of ASCO and the American Association of Cancer Research. 

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