Yan Peng, M.D., Ph.D.

Medical Director, Immunohistochemistry Laboratory; Medical Director, Image Analysis and Fluorescence in Situ Hybridization Laboratory, Parkland Health & Hospital System

Associate Professor

Department: Pathology


Yan Peng received her M.D. and Ph.D. degrees from Beijing Medical University (BMU) in 1986 and 1991, respectively. She completed Pediatric Residency/Chief Resident at BMU and practiced there as a Pediatric Nephrologist till 1993.  After a combined six years of basic research on kidney disease at Mayo Clinic, Rochester, MN and UT-Southwestern Medical Center (UTSW), Dallas, TX, she went to University of Pittsburgh Medical Center (UPMC) for her Pathology Residency in 1999. Upon the completion, she took two one-year ACGME accredited fellowship trainings in Breast and Gynecologic Pathology at UPMC and Cytopathology at Beth Israel Deaconess Medical Center and Harvard Medical School in Boston, respectively. In 2005, she joined the faculty of the Department of Pathology at UTSW, where she has been practicing Surgical Pathology and Cytopathology till now. She is certified in Anatomic Pathology, Clinical Pathology, and Cytopathology by the American Board of Pathology.

Currently she is an UTSW dedicated Breast Pathologist; a Pathology Consultant for the UTSW weekly Multidisciplinary Breast Cancer Conference and Multidisplinary Gynecologic Oncology Tumor Board; an active member of UTSW Breast Care Executive Committee and UTSW University Hospital Cancer Committee. She has been a co-investigator and active participant in several National Cancer Institute (NCI) breast cancer clinical trials. She is Medical Directors of Diagnostic Immunohistochemistry Laboratory and Tumor Biomarker Image and In Situ Hybridization Analysis Laboratory at UTSW Physician Pathologist Leadership Team for Parkland Health & Hospital System. She was elected to be Faculty Senator by UTSW pathology faculty in 2011.

She has published about 60 articles and book chapters, mainly in the fields of Breast and Gynecologic Pathology, Diagnostic Immunohistochemistry, and Cytopathology. Four of the articles on breast cancer were selected to be CME/SAM articles by the editorial board of American Journal of Clinical Pathology. She has given multiple invited lectures/presentations on triple-negative breast cancer, a newly classified molecular subtype of breast cancer, and its potential prognostic tumor biomarkers nationally and internationally. She is an active Topic Team Member of Education Best Practices Team of American Society for Clinical Pathology (ASCP) and a reviewer of course proposals and abstracts for ASCP annual meeting.

Her specialties include Breast Cancer and Gynecologic Cancer Pathology, Cytopathology, Diagnostic Immunohistochemistry with a particular interest in unknown primary cancer work-up, and prognostic tumor biomarker testing by image analysis and FISH.


Medical School Beijing Medical University (1986)
Residency Beijing University Hospital (1989), Pediatrics
Graduate School Beijing Medical University (1991)
Fellowship Mayo Clinic Rochester (1995), Physiology
Fellowship UT Southwestern Medical Center at Dallas (1999), Molecular Nephrology Research
Residency University of Pittsburgh Medical Center (2003), Anatomic & Clinical Pathology
Fellowship University of Pittsburgh Medical Center Magee Womens Hospital (2004), Breast & Gynecologic Pathology
Fellowship Beth Israel Deaconess Medical Center and Harvard Medical School (2005), Cytopathology

Clinical Interests

Diagnosis for Breast Cancer (Breast Pathology)
  • Comprehensive Immunohistochemical Markers including Prognostic Markers
  • Evaluation of Breast Tissue for Diagnosis & Treatment Plans

Research Interests

  • Breast Cancer and Gynecologic Cancer Pathology
  • Diagnostic and/or prognostic tumor biomarkers


Featured Publications Legend

Featured Publications

Results 1-10 of 22


Featured Books Legend

Featured Books


  • Arthur Weinberg UTSW Pathology Resident Research Article Award (Faculty mentor/Senior author)
    UT Southwestern Medical Center (2011)
  • Three articles on breast cancer were selected to be CME/SAM articles by the Editorial Board of the American Journal of Clinical Pathology
  • 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)
  • Outstanding Medical Student Award and Scholarship
    Beijing Medical University (1986)