Additional file 1: Table S2 showed the clinicopathologic features of primary MLL leukemia patient samples, including three acute lymphoid leukemia patients (one with MLL-AF9, another one with MLL-AF4, and the third one with MLL fused by non-classical partner) and one acute myeloid leukemia patient (MLL-AF10). The gene discussed is KMT2A; the disease is acute lymphoblastic leukemia.