Patrick Grierson, MD, PhD

Patrick Grierson, MD, PhD

Medical Oncologist

Primary Academic Title

Assistant Professor of Medicine, Division of Medical Oncology, WashU Medicine

Clinical Expertise

Gastrointestinal cancers

Research Interest

Identifying novel therapeutic opportunities in gastrointestinal cancers by identifying druggable resistance mechanisms to genotoxic and targeted therapies

Education

  • 2014: MD, Ohio State University, Columbus
  • 2012: PhD, Ohio State University

Training

  • 2014 - 2016: Intern/resident, internal medicine, Barnes-Jewish Hospital, St. Louis
  • 2016 - 2020: Fellow, hematology and oncology, Washington University School of Medicine, St. Louis

Board Certification

  • 2017: American Board of Internal Medicine

Selected Research Publications

Gastric Cancer, Version 2.2025, NCCN Clinical Practice Guidelines In Oncology.
  • Ajani JA, D'Amico TA, Bentrem DJ, [...] Grierson P, [...] Stein M
  • J Natl Compr Canc Netw 2025
Combined KRAS-MAPK pathway inhibitors and HER2-directed drug conjugate is efficacious in pancreatic cancer.
  • Bulle A, Liu P, Seehra K, [...] Grierson PM, [...] Lim KH
  • Nat Commun 2024
Esophageal and Esophagogastric Junction Cancers, Version 2.2023, NCCN Clinical Practice Guidelines in Oncology.
  • Ajani JA, D'Amico TA, Bentrem DJ, [...] Grierson P, [...] Pluchino LA
  • J Natl Compr Canc Netw 2023
IRAK4 Signaling Drives Resistance to Checkpoint Immunotherapy in Pancreatic Ductal Adenocarcinoma.
  • Somani VK, Zhang D, Dodhiawala PB, [...] Grierson PM, [...] Lim KH
  • Gastroenterology 2022

View All Publications

Contact Information

  • Gary C. Werths Building at Siteman Cancer Center

    4500 Forest Park Avenue
    Saint Louis, MO 63108

  • South St. Louis County

    5225 Midamerica Plaza
    St. Louis, MO 63129

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