Matthew J. Ellis

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Dr. Matthew Ellis

Professor of Medicine

Lester and Sue Smith Breast Center at Baylor

Appointed McNair Scholar September 2014

Dr. Matthew Ellis serves as director of the Lester and Sue Smith Breast Center at Baylor. He is a world renowned clinician and researcher of the molecular profiling of breast cancer.

Ellis is a native of the United Kingdom. He completed his medical degree from Queens’ College & School of Clinical Medicine at the University of Cambridge in England, postgraduate clinical training at the Royal College of Physicians in London and Ph.D. training at the Royal Postgraduate Medical School at the University of London.

Prior to coming to Baylor, Ellis was at Washington University School of Medicine, where he served as professor of medicine, head of breast oncology and head of medical oncology. Prior to Washington University, Ellis served on the faculty at Duke University and Georgetown University.

His research has unveiled groundbreaking new information about mutations in breast cancer and their clinical relevance. He has been instrumental in developing a Genome Atlas and Therapeutic Road Map for estrogen receptor positive breast cancer. Most recently, he has found that metastatic breast tumors initially positive for the estrogen receptor frequently harbor mutations and translocations in the receptor that render the tumor resistant to endocrine therapies used to block estrogen.

Ellis is a funded scholar of the Cancer Prevention and Research Institute of Texas and the Susan G. Komen Foundation for the Cure. View profile.

Articles about Dr. Ellis:

Dr. Matthew J. Ellis named new director of Lester and Sue Smith Breast Center

Dr. Matthew Ellis named newest McNair Scholar


McNair Medical Institute at Baylor


Learn more about the McNair Medical Institute at Baylor College of Medicine and the support of Robert C. and Janice McNair.