SIRT1

Across TCGA pan-cancer cohorts, SIRT1 mass-spec protein differs between tumor and matched normal tissue in 4 of 18 cancer types tested, making tumor–normal expression one of SIRT1’s most consistent transcriptional readouts.

The strongest signal is observed in pancreatic ductal adenocarcinoma (PDAC), where SIRT1 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types SIRT1 is over-expressed in tumor, although a few such as PDAC show the opposite, repressed pattern.

PDAC, LUAD, and LSCC are the cancer types where SIRT1 tumor–normal differential expression is most reproducible.

mass-spec protein tumor vs normal associations by lineage

Ranked by sampling consensus. Fold-change is the tumor-versus-normal difference in SIRT1 mass-spec protein (log₂); positive values indicate higher expression in tumor. p-values are from the differential-expression test.

Lineage	Gender	Stage	Fold-change	p	Sampling consensus
PDAC	Male	All	−0.347	<.001	8	view →
LUAD	Male	All	+0.198	<.001	8	view →
LSCC	Male	II,III,IV	+0.207	<.001	7	view →
CCRCC	All	All	+0.053	.038	1	view →

Pink = over-expressed in tumor, green = repressed in tumor. Showing the 4 strongest of 4 lineages.

SIRT1–PDAC

Open the PDAC breakdown →