label: B Acute Lymphoblastic Leukemia with t(4;11)(q21;23.3); KMT2A-AFF1
label_lc: b acute lymphoblastic leukemia with t(4;11)(q21;23.3); kmt2a-aff1
description: A B-cell acute lymphoblastic leukemia associated with t(4;11)(q21;23.3). This translocation leads to the generation of the fusion gene KMT2A-AFF1.