Across TCGA pan-cancer cohorts, LINC01991 RNA differs between tumor and matched normal tissue in 5 of 18 cancer types tested, making tumor–normal expression one of LINC01991’s most consistent transcriptional readouts.
The strongest signal is observed in kidney renal clear cell carcinoma (KIRC), where LINC01991 RNA is repressed in tumor relative to normal tissue. In most cancer types LINC01991 is over-expressed in tumor, although a few such as KIRC and COAD show the opposite, repressed pattern.
KIRC, COAD, and KICH are the cancer types where LINC01991 tumor–normal differential expression is most reproducible.