Since it is well-accepted that drug resistance is dependent on multiple mechanisms, we performed mRNA expression analysis of BCL2L1, BAX, and other genes reported to be important regulators of BTZ resistance in MCL cells, including OGT, CD36, and ZEB1, in human MCL microarrays available on Gene Expression Omnibus (GEO; accession number GSE10793) [28] to examine the association between their expression and survival of MCL patients. Here, ZEB1 is linked to mantle cell lymphoma.