BCL2 and acute lymphoblastic leukemia: Furthermore, in contrast to recent data of Iacovelli et al. [52] who showed that in five acute lymphocytic leukemia (ALL) cell lines the ratio of MCL-1/BCL-2 plus BCL-xL protein ratio was correlated with sensitivity to ABT-737, in the 16 thyroid carcinoma cell lines analyzed in this study, no such correlation was found [51].