This intrinsic apoptotic pathway culminates in hallmark morphological changes, such as nuclear condensation, membrane blebbing, and ultimately apoptotic cell death in MM.[28] In our experiments, flow cytometric analysis using Annexin V and Propidium Iodide (PI) staining revealed a significant increase in apoptosis cells following co‐culture with T cells exposed to BCMA‐based MATCH, indicating effective induction of apoptosis via immune effector engagement (Figure 5A; Figure S11, Supporting Information). Here, ANXA5 is linked to Miyoshi myopathy.