Dr. A. Jo Chien specializes in breast cancer, with special expertise in tumors that are called HER2+ (human epidermal growth factor receptor 2), typically a more aggressive type of cancer. Her primary research interests include HER2+, breast cancer in young women, and fertility problems related to cancer treatment.
Chien graduated from Harvard Medical School in 2003 and completed a residency in internal medicine at Massachusetts General Hospital in Boston. She was a fellow in the hematology and oncology at UCSF from 2006 to 2009. Chien received the Massachusetts Medical Society and Alliance Charitable Foundation International Health Grant in 2003, American Society of Clinical Oncology (ASCO) Young Investigator Award in 2008; ASCO Foundation Merit Award in 2008; and American Cancer Society Postdoctoral Fellowship in 2008. She has published numerous articles in medical journals related to her breast cancer research. Chien is a member of the American Society of Clinical Oncology and the American Association of Cancer Research. She is an assistant professor of medicine at UCSF.