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Current progression-free survival (PFS) rate of 86 chronic lymphocytic leukemia patients who underwent nonmyeloablative stem cell transplantation is shown according to human leukocyte antigen (HLA) subtype. Patients who were HLA-A1 positive, HLA-A2 negative, and HLA-B44 negative had higher current PFS rates than did other patients who had 0, 1, or only 2 of these HLA factors.
