Across TCGA pan-cancer cohorts, IGHV1OR15-1 RNA differs between tumor and matched normal tissue in 5 of 18 cancer types tested, making tumor–normal expression one of IGHV1OR15-1’s most consistent transcriptional readouts.
The strongest signal is observed in colon adenocarcinoma (COAD), where IGHV1OR15-1 RNA is repressed in tumor relative to normal tissue. In most cancer types IGHV1OR15-1 is over-expressed in tumor, although a few such as COAD and LIHC show the opposite, repressed pattern.
COAD, LUAD, and LIHC are the cancer types where IGHV1OR15-1 tumor–normal differential expression is most reproducible.