Siyan Cao, MD, PhD

Gastroenterologist

Siyan Cao
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My Locations

Center for Advanced Medicine

Center for Advanced Medicine

On WashU Medicine Campus
4921 Parkview Place, Saint Louis, MO 63110

Expertise & Training

Clinical Expertise

  • Gastroenterology

Primary Academic Title

Assistant Professor of Medicine, Division of Gastroenterology, WashU Medicine

Board Certification

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

Training

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

Education

  • 2008: BS, Zhejiang University, Zhejiang, China
  • 2013: PhD, University of Michigan Ann Arbor, Ann Arbor, MI
  • 2016: MD, Columbia University, New York, NY

Research & Selected Publications

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.

Research Publications

Authors:

Fachi JL, de Oliveira S, Trsan T, Cao S, Colonna M

Journal & Year:

Sci Immunol | 2026

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