Dr. Pritchard is a medical oncologist and clinical trials research scientist. Her areas of interest include multicentre clinical trials; adjuvant, biologic and hormonal therapy for breast cancer; correlative and translational research in breast cancer; banking of tumour, tissue, serum and data; and predictive and prognostic factors in breast cancer.

In 2005, Dr. Pritchard was awarded the O. Harold Warwick Prize for Cancer Control in Canada by the Canadian Cancer Society and the National Cancer Institute of Canada for her work in clinical and translational trials in breast cancer.

As chair of the National Cancer Institute of Canada Clinical Trials Breast Cancer Site Group (now Canadian Cancer Trials Group), Dr. Pritchard has guided the development and performance of multicentre Canadian clinical trials of new therapies for women with breast cancer for more than 25 years.