Cynthia Ma, MD, PhD

Cynthia Ma, MD, PhD

Medical Oncologist

Primary Academic Title

Professor of Medicine, Division of Oncology, Section of Breast Oncology, Washington University School of Medicine

Clinical Expertise

Breast cancer

Research Interest

Breast cancer, endocrine therapy, developmental therapeutics, biomarkers and pharmacogenetics.


  • 1990: MD, Beijing Medical University
  • 1997: PhD, developmental biology, University of Cincinnati


  • 1990 - 1991: Resident, internal medicine and endocrinology, Beijing Medical University
  • 1997 - 1998: Postdoctoral fellow, endocrinology and oncology, University of Cincinnati
  • 1998 - 2001: Intern and resident, internal medicine, New Hanover Regional Medical Center, Wilmington, N.C.
  • 2001 - 2005: Fellow, hematology and oncology, Mayo Clinic, Rochester, Minn.

Board Certification

  • 2001: American Board of Internal Medicine, Internal Medicine
  • 2004: American Board of Internal Medicine, Hematology
  • 2005: American Board of Internal Medicine, Medical Oncology

Selected Research Publications

Genetic Alterations Detected by Circulating Tumor DNA in HER2-Low Metastatic Breast Cancer.
  • Hensing WL, Gerratana L, Clifton K, [...] Ma CX, [...] Davis AA
  • Clin Cancer Res 2023
Circulating tumour DNA characterisation of invasive lobular carcinoma in patients with metastatic breast cancer.
  • Davis AA, Gerratana L, Clifton K, [...] Ma CX, [...] Cristofanilli M
  • EBioMedicine 2022
A phase II trial of an alternative schedule of palbociclib and embedded serum TK1 analysis.
  • Krishnamurthy J, Luo J, Suresh R, [...] Ma CX
  • NPJ Breast Cancer 2022
Intermittent fasting in the prevention and treatment of cancer.
  • Clifton KK, Ma CX, Fontana L, Peterson LL
  • CA Cancer J Clin 2021

View All Publications

Contact Information

  • Washington University Medical Campus

    4921 Parkview Place
    Saint Louis, MO 63110

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