Long-term engraftment and clonal dominance of donor-derived del(20q) hematopoietic cells after allogeneic stem cell transplantation

In 1997, a 50-year-old woman who was retrospectively diagnosed with early asymptomatic myelodysplastic syndrome (MDS) served as a hematopoietic cell donor for her HLA-identical sister who had chemotherapy-refractory angioimmunoblastic T-cell lymphoma.[1][1] The preparative transplant regimen