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Lachelle D. Weeks, MD, PhD

Medical Oncology

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Lachelle D. Weeks, MD, PhD


  • Physician
  • Instructor in Medicine, Harvard Medical School


Clinical Interests

  • Clonal cytopenia of undetermined significance (CCUS)
  • Clonal hematopoiesis of indeterminate potential (CHIP)
  • Inflammatory consequences of myeloid neoplasms
  • Myelodysplastic syndrome
  • Myeloproliferative neoplasms

Diseases Treated

Contact Information

  • Office Phone Number617-632-6028
  • Fax617-632-2933


Dr. Weeks is an Instructor in Medicine at Harvard Medical School and a physician-scientist in the adult leukemia program at Dana-Farber Cancer institute. Dr. Weeks received her MD and PhD from Case Western Reserve University School of Medicine. She completed residency in Internal Medicine at Brigham and Women's Hospital and fellowship in Hematology/Oncology at Dana-Farber/Mass General Brigham Cancer Care Program. Dr. Week's clinic focuses on the care of patients with precursors of the myeloid malignancies including clonal hematopoiesis of indeterminate potential (CHIP) and clonal cytopenia of undetermined significance (CCUS). Her research focuses on understanding features of CHIP and CCUS that impact the progression to overt myeloid diseases such as myelodysplastic syndrome (MDS) and acute leukemia.

Board Certification:

  • Internal Medicine


  • Dana-Farber Cancer Institute/MGB Combined Hematology-Oncology Fellowship


  • Brigham and Women's Hospital, Internal Medicine

Medical School:

  • Case Western Reserve University


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