Dr. Yan Peng completed her pediatric residency/chief resident at Beijing Medical University (Peking University Health Science Center) and practiced there as a pediatric nephrologist for two years. After a combined six years of basic science research on kidney disease at Mayo Clinic in Rochester and UT Southwestern Medical Center (UTSW), she went to the University of Pittsburgh Medical Center (UPMC) for pathology residency. After the residency training, she completed two ACGME accredited fellowships in Breast and Gynecologic Pathology and Cytopathology at UPMC and Harvard Medical School, respectively.

Dr. Peng is a surgical pathologist and cytopathologist with extensive expertise in breast and gynecologic pathology and certified by the American Board of Pathology in Anatomic Pathology, Clinical Pathology and Cytopathology. She served as the inaugural co-leader of breast pathology specialized service established in 2009. She has been the pathology representative serving on the Cancer Committee of the National Cancer Institute (NCI)-designated comprehensive Simmons Cancer Center of UTSW since 2012. She also served as the inaugural medical director of Diagnostic Immunohistochemistry Laboratory and Tumor Biomarker Image Analysis Laboratory for 10 years at PHHS.

Dr. Peng has participated in multiple NCI breast and gynecologic cancer clinical trials as a clinical investigator for the NCI Cancer Therapy Evaluation Program. She is a co-investigator in multiple NIH RO1 funded research projects on identifying novel therapeutic targets for breast cancer. Dr. Peng has published more than 100 peer-reviewed articles. She is an editor of a textbook entitled Practical Breast Pathology (Springer), guest editor of a special issue entitled Updates on Breast Pathology for Seminars in Diagnostic Pathology (Elsevier), and an author of multiple book chapters of breast pathology textbooks. She has served as an editorial board member for multiple scientific journals including Cancers and Human Pathology (Elsevier) and has been an invited reviewer for Cell Reports Medicine, Biomaterials, Biochimica et Biophysica Acta (BBA)-Reviews on Cancer, Cancer Treatment Reviews, eBioMedicine, Oncogene, etc. She is the section editor of Gynecologic Pathology of Human Pathology Reports (Elsevier). She is a past president of the North Texas Society of Pathologists.


 Dr. Peng has been a member of the University Faculty Promotion and Tenure Committee and has also been chairing the Pathology Faculty Mentoring Committee. She is a past president of the UT Southwestern Faculty Senate. 


Medical School
Beijing Medical University (1986)
Beijing University Hospital (1989), Pediatrics
Graduate School
Beijing Medical University, China (1991)
Other Post Graduate Training
Beijing Medical University, China (1991)
Mayo Clinic College of Medicine (1995), Physiology
UT Southwestern Medical Center (1999), Molecular Nephrology Research
University of Pittsburgh Medical Center (2003), Anatomic & Clinical Pathology
University of Pittsburgh Medical Center Magee Womens Hospital (2004), Breast & Gynecologic Pathology
Harvard Medical School/Beth Israel Deaconess Medical Center (2005), Cytopathology

Research Interest

  • Breast Cancer and Gynecologic Cancer Pathology
  • Diagnostic Immunohistochemistry: Theranostic and Genomic Applications
  • Prognostic and predictive tumor biomarkers


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Honors & Awards

  • Faculty Mentor (Breast Pathology), United States and Canadian Academy of Pathology (USCAP)
  • Invited Speaker: Updates in Breast Cancer Biomarkers in 2023
    The Eighth International Conference on Cancer Research & Drug Development (Cancer R&D), Boston, MA (2023)
  • Top Doctor (Pathologist)
    Texas Magazine (2022)
  • Session Chair, The Breast Pathology Platform Sessions for the United States and Canadian Academy of Pathology (USCAP) 110th annual meeting
  • Outstanding peer reviewer for Human Pathology (one of leading pathology scientific journals in the US)
  • Member, Abstract Review Board of United States and Canadian Academy of Pathology (Breast Pathology Category)
  • President, International Association of Chinese Pathologists
  • President, UT Southwestern Faculty Senate
  • Finalist for Best Scientific Abstract Award of American Society for Clinical Pathology (senior mentor)
  • Distinguished Young Investigator Award in Medicine
    Beijing, China (1993)
  • Distinguished Scientist Award of Canada China Child Health Foundation
  • Best National Medical Article Award
    China (1991)