Across TCGA pan-cancer cohorts, SNORD116-30 RNA differs between tumor and matched normal tissue in 3 of 18 cancer types tested, making tumor–normal expression one of SNORD116-30’s most consistent transcriptional readouts.
The strongest signal is observed in thyroid carcinoma (THCA), where SNORD116-30 RNA is repressed in tumor relative to normal tissue. In most cancer types SNORD116-30 is over-expressed in tumor, although a few such as THCA show the opposite, repressed pattern.
THCA, PRAD, and BRCA are the cancer types where SNORD116-30 tumor–normal differential expression is most reproducible.