Thomas Pfeiffer, MD

Bone Marrow Transplant Specialist, Pediatric Hematologist/Oncologist

Thomas Pfeiffer

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

Siteman Kids at St. Louis Children’s Hospital

Siteman Kids at St. Louis Children’s Hospital

On WashU Medicine Campus
1 Children's Place, St. Louis, MO 63110

Expertise & Training

Clinical Expertise

  • Pediatric hematology/oncology

Primary Academic Title

Assistant Professor, Department of Pediatrics, Division of Hematology/Oncology, WashU Medicine

Board Certification

  • 2018: American Board of Pediatrics
  • 2023: American Board of Pediatric Hematology/Oncology

Training

  • 2015 - 2018: Pediatric Residency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
  • 2018 - 2021: Pediatric Hematology/Oncology Fellowship, Texas Children's Hospital, Houston, TX
  • 2021 - 2022: Pediatric Bone Marrow Transplantation Fellowship, St. Jude Children's Research Hospital, Memphis, TN

Education

  • 201: MD, Medical University of Vienna, Vienna, Austria

Research & Selected Publications

Research Interest

My work focuses on advancing treatments for pediatric hematologic malignancies through the use of novel graft manipulation techniques (TCR αβ T cell depletion) in bone marrow transplantation, and CAR-T cell therapies. My research also explores memory like NK cells as a promising immunotherapy for AML. Additionally, I am dedicated to improving strategies to prevent and manage viral infections after bone marrow transplant, aiming to enhance outcomes for pediatric transplant recipients.

Research Publications

Alemtuzumab, Fludarabine, Melphalan, and Thiotepa Conditioning for Transplantation in Inborn Errors of Immunity
Authors:

Pfeiffer T, Murray L, Gao F, one or more additional authors omitted Bednarski JJ

Journal & Year:

Transplant Cell Ther | 2026

Virus-Specific T Cells for the Treatment of Systemic Infections Following Allogeneic Hematopoietic Cell and Solid Organ Transplantation
Authors:

Green A, Rubinstein JD, Grimley M, Pfeiffer T

Journal & Year:

J Pediatric Infect Dis Soc | 2024