We investigated the role of BNIP3 overexpression in myeloma cells, and particularly its effects on apoptosis and mitochondria….BNIP3-OE cells exhibited lower viability, and significantly lower viability following BTZ treatment. BTZ-treated BNIP3-OE cells exhibited a significantly higher apoptosis rate than with BTZ-treated vector group...BNIP3 overexpression may promote apoptosis in myeloma cells by enhancing myeloma cell sensitivity to BTZ.