Siyan Cao, MD, PhD

Siyan Cao, MD, PhD

Gastroenterologist

Primary Academic Title

Assistant Professor of Medicine, Division of Gastroenterology, WashU Medicine

Clinical Expertise

Gastroenterology

Research Interest

My research interests include mucosal immunity, colorectal cancer in patients with inflammatory bowel disease, innate lymphoid cells (ILC) and myeloid-derived suppressor cells (MDSC) in tumorigenesis, and cancer immunotherapy.

Education

  • 2008: BS, Zhejiang University
  • 2013: PhD, University of Michigan
  • 2016: MD, Columbia University

Training

  • 2016 - 2019: Resident in Internal Medicine , University of California at San Francisco
  • 2019 - 2022: Clinical Fellow in Gastroenterology, Washington University in St. Louis
  • 2021 - 2024: Postdoctoral Scholar, Washington University in St. louis

Board Certification

  • 2019: American Board of Internal Medicine
  • 2022: American Board of Gastroenterology

Selected Research Publications

Divergent ILC3 responses to PDGF-D control mucosal immunity.
  • Fachi JL, de Oliveira S, Trsan T, [...] Cao S, [...] Colonna M
  • Sci Immunol 2026

Contact Information

  • Gary C. Werths Building at Siteman Cancer Center

    4500 Forest Park Avenue
    Saint Louis, MO 63108

Request an appointment