To assess TSPAN32 expression across hematologic malignancies, we analyzed microarray data from the Leukemia MILE study (GSE13159), which includes transcriptomic profiles of T-ALL, B-cell acute lymphoblastic leukemia (ALL with t(12;21) and mature B-ALL with t(8;14)), chronic lymphocytic leukemia (CLL), and healthy bone marrow. The gene discussed is TSPAN32; the disease is precursor B-cell acute lymphoblastic leukemia.