As MCF‐7 and MDA‐MB‐468 are both derived from breast cancers, we next examined the expression of DRAM‐4 and DRAM‐5 in a broader panel of breast cancer cell lines, which revealed that DRAM‐4 and DRAM‐5 are expressed to varying levels across the panel (Fig. 4B). Here, TMEM150A is linked to breast carcinoma.