LAPTM5 and T-cell acute lymphoblastic leukemia: LAPTM5 mRNA was absent or hardly detected in the lymphoid malignant cells (acute T cell leukemia Jurkat cells, acute lymphoblastic leukemia Molt-3 cells, and T cell lymphoblastic lymphoma Sup-T1 cells) and non-hematopoietic malignant cells (colon adenocarcinoma COLO 320DM cells, and cervical epithelioid carcinoma HeLa cells).