Cell line/primary blasts (HL-60, KG-1, U937, Jurkat, NB4. HL-60–doxorubicin-resistant cells (HL-60-DOX). U937/Bcl-2 and its vector control, U937/pCEP. 4 primary AML and 2 primary CML-BC patients’ samples). This evidence concerns the gene BCL2 and chronic myelogenous leukemia, BCR-ABL1 positive.