Ramon Jin, MD, PhD

Medical Oncologist

Ramon Jin

Appointment Options

Whether you’re seeking a new patient appointment or exploring treatment options and looking for a second opinion, our Siteman care coordinators are ready to assist you.

My Locations

Gary C. Werths Building at Siteman Cancer Center

Gary C. Werths Building at Siteman Cancer Center

On WashU Medicine Campus
4500 Forest Park Avenue, Saint Louis, MO 63108

Expertise & Training

Clinical Expertise

  • Upper gastrointestinal cancers

Primary Academic Title

Assistant Professor of Medicine, Division of Oncology, WashU Medicine

Board Certification

  • 2018: ABIM Board Certification
  • 2021: ABIM Board Certification

Training

  • 2015 - 2017: Internal Medicine Residency, WashU Medicine, St. Louis, MO
  • 2017 - 2021: Hematology-Oncology Fellowship, WashU Medicine, St. Louis, MO

Education

  • 2006: BS, Case Western Reserve University, Cleveland, OH
  • 2015: MD, PhD, WashU Medicine, St. Louis, MO

Research & Selected Publications

Research Interest

Alarmingly, the rates of esophageal adenocarcinoma (EAC) have been increasing in the US. Unfortunately, only one out of five patients with EAC will live longer than 5 years. There is a precursor condition called Barrett’s esophagus (BE) that occurs during the development of all EAC. This precancerous condition is defined by replacement of the normal esophagus mucosa with an intestinal-like lining in response to gastroesophageal reflux disease. My research strives to define why this “intestinalization” occurs in the esophagus and the specific steps that happen during this process. I believe that if we understand why and how BE develops, then we can possibly reverse this condition to prevent it from ever progressing to EAC.

Research Publications

A 15-layer multi-omics analysis of gastric cancer ecotypes provides therapeutic insights
Authors:

Wang Y, Olsen LK, Jiao F, one or more additional authors omitted Jin RU, one or more additional authors omitted Zhang B

Journal & Year:

Cell Rep Med | 2026

SOX2 regulates foregut squamous epithelial homeostasis and is lost during Barrett's esophagus development
Authors:

Jin RU, Xu Y, Lih TM, one or more additional authors omitted Mills JC

Journal & Year:

J Clin Invest | 2025

Harnessing technologies to unravel gastric cancer heterogeneity
Authors:

Wang Y, Jin RU, Xu J, one or more additional authors omitted Zhang H

Journal & Year:

Trends Cancer | 2025

Targeting Esophageal Cancer: Promising Drugs for the Clinical Landscape and Key Knowledge Gaps
Authors:

Akumaga T, Park H, Lockhart AC, Jin RU

Journal & Year:

Drug Des Devel Ther | 2025