Katherine Clifton, MD

Medical Oncologist

Katherine Clifton

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
Siteman Cancer Center at Barnes-Jewish West County Hospital

Siteman Cancer Center at Barnes-Jewish West County Hospital

Medical Office Building 2, 10 Barnes West Drive, Creve Coeur, MO 63141

Expertise & Training

Clinical Expertise

  • Breast Cancer

Primary Academic Title

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

Board Certification

  • 2016: American Board of Internal Medicine

Training

  • 2013 - 2016: Resident, Internal Medicine, Beth Israel Deaconess Medical Center, Boston, MA
  • 2016 - 2019: Fellow, Hematology/Oncology, MD Anderson Cancer Center, Houston, TX

Education

  • 2013: MD, Loyola University, Maywood, IL

Research & Selected Publications

Research Interest

Breast Cancer

Research Publications

Real-World Analysis of Adverse Events in Patients With Triple-Negative Breast Cancer Receiving Therapy per KEYNOTE-522
Authors:

Hofherr ML, Davis AA, January S, one or more additional authors omitted Clifton K

Journal & Year:

JCO Oncol Pract | 2026

A bedside-to-bench translational analysis of NF1 alterations and CDK4/6 inhibitor resistance in hormone receptor-positive metastatic breast cancer
Authors:

Lloyd MR, Chica-Parrado R, Weipert CM, one or more additional authors omitted Clifton KK, one or more additional authors omitted Wander SA

Journal & Year:

EBioMedicine | 2025

Detection of Circulating Tumor DNA Using a Tissue-Free Epigenomic Assay Is a Highly Prognostic Biomarker in Early-Stage Triple-Negative Breast Cancer
Authors:

Ademuyiwa FO, Ma CX, Weilbaecher K, one or more additional authors omitted Clifton K, one or more additional authors omitted Davis A

Journal & Year:

Clin Cancer Res | 2025

Integrating machine learning-predicted circulating tumor cells (CTCs) and circulating tumor DNA (ctDNA) in metastatic breast cancer: A proof of principle study on endocrine resista…
Authors:

Gerratana L, Davis AA, Foffano L, one or more additional authors omitted Clifton K, one or more additional authors omitted Cristofanilli M

Journal & Year:

Cancer Lett | 2025

Genetic Alterations Detected by Circulating Tumor DNA in HER2-Low Metastatic Breast Cancer
Authors:

Hensing WL, Gerratana L, Clifton K, one or more additional authors omitted Davis AA

Journal & Year:

Clin Cancer Res | 2023