CMTM6 and cancer: Our result with TMA immunohistochemistry showed that CMTM6 expresses in 15 types of cancers, and this is consistent with previous report in which CMTM6 mRNA expression was detected from tumor samples of 30 different types of cancers by The Cancer Genome Atlas (TCGA) [6], indicating CMTM6 expression is common in most cancer types.