Across TCGA pan-cancer cohorts, MIR34C RNA differs between tumor and matched normal tissue in 5 of 18 cancer types tested, making tumor–normal expression one of MIR34C’s most consistent transcriptional readouts.
The strongest signal is observed in lung squamous cell carcinoma (LUSC), where MIR34C RNA is repressed in tumor relative to normal tissue. In most cancer types MIR34C is over-expressed in tumor, although a few such as LUSC and LUAD show the opposite, repressed pattern.
LUSC, LUAD, and UCEC are the cancer types where MIR34C tumor–normal differential expression is most reproducible.