Across TCGA pan-cancer cohorts, HLA-E RNA differs between tumor and matched normal tissue in 13 of 18 cancer types tested, making tumor–normal expression one of HLA-E’s most consistent transcriptional readouts.
The strongest signal is observed in lung adenocarcinoma (LUAD), where HLA-E RNA is repressed in tumor relative to normal tissue. In most cancer types HLA-E is over-expressed in tumor, although a few such as LUAD and KICH show the opposite, repressed pattern.
LUAD, KIRC, and KICH are the cancer types where HLA-E tumor–normal differential expression is most reproducible.
RNA tumor vs normal associations by lineage
Ranked by sampling consensus. Fold-change is the tumor-versus-normal difference in HLA-E RNA (log2); positive values indicate higher expression in tumor. p-values are from the differential-expression test.