Clone 100 has been isolated from bone marrow of patient 3,087, 5 weeks after donor lymphocyte infusion (DLI) for relapsed chronic myeloid leukemia (CML) after alloSCT (9) and was restricted to HLA-DRB1*03:01. The gene discussed is HLA-DRB1; the disease is chronic myelogenous leukemia, BCR-ABL1 positive.