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Tomokazu S Sumida, MD, PhD

Assistant Professor

Contact Information

Tomokazu S Sumida, MD, PhD


Dr. Tomokazu Sumida received his MD from Chiba University School of Medicine in Japan in 2004 and completed two years of residency, followed by two years of fellowship in cardiology. He practiced as a cardiologist in Japan before obtaining his PhD in 2012 studying the interface between the immune system and cardiovascular disease. To learn basic and translational immunology, he joined the lab of Dr. David Hafler at Yale in 2015 as a postdoctoral fellow. His research focus is mainly on understanding molecular mechanisms that drive T cell dysfunction, especially regulatory T cells, in human diseases by using cutting-edge technologies (i.e. Single-cell multi-omics, ATAC-seq, CRISPR gene editing/regulation). He was appointed as an assistant professor of neurology in 2020.

Education & Training

  • Instructor
    Yale School of Medicine (2020)
  • Associate Research Scientist
    Yale School of Medicine (2019)
  • Post doctoral Associate
    Yale School of Medicine (2017)
  • Postdoctoral fellowship
    Yale School of Medicine (2016)
  • PhD
    Chiba University, Graduate School of Medical and Pharmaceutical Sciences (2012)
  • MD
    Chiba University, School of Medicine (2004)


  • Interferons in Acute Viral Disease - Friend or Foe
    Washington, DC, United States 2022
    Viral Infections & Inflammation Workshop 2022
  • Integrated Multi-Omics Profiling of Foxp3+ Regulatory T cells Identify Dysfunctional Program in Multiple Sclerosis
    Tokyo, Tokyo, Japan 2022
    Cell Physiology Seminar
  • Dynamic gene regulatory network of IFN-beta response in human T cells
    Boston, MA, United States 2019
    FOCIS 2019
  • Wnt Signaling Links High Salt and Proinflammatory Signature in Treg
    Boston, MA, United States 2016

Honors & Recognition

AwardAwarding OrganizationDate
Harry Weaver Scholar AwardsNMSS2023
Race to Erase MS Young Investigator AwardRace to Erase MS2020
MSD Life Science Foundation Research FellowshipMSD2016
LEGEND Study Abroad GrantBioLegend and Tomy Digital Biology2015
Uehara Memorial Foundation Research FellowshipUehara Memorial Foundation2015
Grant-in-Aid for Young Scientists, MEXT/JSPS KAKENHI Grant Number 268701412014
Early Career Investigator Travel AwardsInternational Society for Heart Research2013

Departments & Organizations