Joyce Ann O'Shaughnessy, M.D.


Joyce O’Shaughnessy, M.D. is a medical oncologist specializing in breast cancer with Texas Oncology, P.A., U.S. Oncology at the Baylor-Sammons Cancer Center in Dallas. She is co-chair of Breast Cancer Research and chair of Cancer Prevention Research for the U.S. Oncology clinical trials network, which enrolls over 1,400 patients annually in breast cancer treatment and risk reduction trials.

Dr. O’Shaughnessy evaluated clinical trial concepts and protocols during her 2 years at the Cancer Therapy Evaluation Program (CTEP), NCI; delineated new cancer drug approval endpoints with NCI and CTEP while a Special Assistant to the NCI Director; and directed breast cancer prevention and treatment clinical trials in the NCI Medicine Branch. While at NCI she helped found the NCI-FDA Fellowship Training Program.

Dr. O’Shaughnessy graduated summa cum laude from Holy Cross College in 1978 and served on the Holy Cross College Board of Trustees from 1988 to 1996. She graduated cum laude from Yale University Medical School in 1982. Dr. O’Shaughnessy completed her internship and residency in internal medicine at Massachusetts General Hospital followed by her fellowship in medical oncology at the National Cancer Institute.

She has served from 1995-1996 and from 2002-2003 on the ASCO Scientific Program Committee and has participated in several ASCO meetings in educational sessions, and was the chair of the ASCO Nominating Committee in 2006. She has participated as a member of NCI’s Breast Cancer Program Progress Review committee.

Dr. O’Shaughnessy chaired the AACR Task Force on Treatment of Intraepithelial Neoplasia (IEN) which published clinical trial strategies to accelerate development of new agents for IEN. She currently serves as Program Director for the School of Breast Oncology.

Dr. O’Shaughnessy is Associate Editor of Clinical Breast Cancer and serves on the editorial board of Clinical Cancer Research as well as the Journal of Supportive Cancer Care. Her major areas of research interest are in developing new treatments for breast pre-cancer and cancer.

"I'm so pleased to be involved with Breastcancer.org because I believe that patient education is key to preventing and curing breast cancer," Dr. O'Shaughnessy says. "The more women know, the more proactive they will become."

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