Exploring the Origin of Cells in the Progression of Primary Myelofibrosis to Acute Myeloid Leukemia Case Report.

Primary myelofibrosis (PMF) is the clonal proliferation of common myeloid progenitor (CMP) cells and can transform into acute myeloid leukemia (AML). The exact transformation process and cell lines involved are not well-understood. A patient with PMF received an allogenic hematopoietic stem cell transplant (alloHCT) from his major ABO incompatible sibling and developed pure red cell aplasia that resolved when his blood type switched to that of his donor's. He relapsed with AML 10 months after alloHCT; interestingly, his blood type remained his donor's type. This supports that AML in this patient with PMF stemmed from more committed progenitors (myeloblasts) than CMP.