In this study, we investigated the proliferation of myeloma cells under hypoxic conditions, focusing on the expression of the BCL2 gene, the BCL2 family member, BCL2‐like protein 11 (BCL‐2 interacting mediator of cell death: BIM), and BCL2 associated agonist of cell death (BAD). The gene discussed is BCL2; the disease is plasma cell myeloma.