Patrick Grierson, MD, PhD

Medical Oncologist

Patrick Grierson

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

  • Gastrointestinal Cancers

Primary Academic Title

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

Board Certification

  • 2017: American Board of Internal Medicine

Training

  • 2014 - 2016: Intern/Resident, Internal Medicine, WashU Medicine, St. Louis, MO
  • 2016 - 2020: Fellow, Hematology and Oncology, WashU Medicine, St. Louis, MO

Education

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

Research & Selected Publications

Research Interest

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

Research Publications

Neoadjuvant BMS-813160, Nivolumab, Gemcitabine, and Nab-Paclitaxel for Patients with Pancreatic Cancer
Authors:

Grierson PM, Wolf C, Suresh R, one or more additional authors omitted Lim KH

Journal & Year:

Clin Cancer Res | 2025

Gastric Cancer, Version 2.2025, NCCN Clinical Practice Guidelines In Oncology
Authors:

Ajani JA, D'Amico TA, Bentrem DJ, one or more additional authors omitted Grierson P, one or more additional authors omitted Stein M

Journal & Year:

J Natl Compr Canc Netw | 2025

Combined KRAS-MAPK pathway inhibitors and HER2-directed drug conjugate is efficacious in pancreatic cancer
Authors:

Bulle A, Liu P, Seehra K, one or more additional authors omitted Grierson PM, one or more additional authors omitted Lim KH

Journal & Year:

Nat Commun | 2024

A Pilot Study of Paricalcitol plus Nanoliposomal Irinotecan and 5-FU/LV in Advanced Pancreatic Cancer Patients after Progression on Gemcitabine-Based Therapy
Authors:

Grierson PM, Suresh R, Tan B, one or more additional authors omitted Lim KH

Journal & Year:

Clin Cancer Res | 2023