Across TCGA pan-cancer cohorts, SULT1A1 mass-spec protein differs between tumor and matched normal tissue in 4 of 18 cancer types tested, making tumor–normal expression one of SULT1A1’s most consistent transcriptional readouts.

The strongest signal is observed in colon adenocarcinoma (COAD), where SULT1A1 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types SULT1A1 is over-expressed in tumor, although a few such as COAD and LSCC show the opposite, repressed pattern.

COAD, LSCC, and LUAD are the cancer types where SULT1A1 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 SULT1A1 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
COAD	Male	All	−0.950	<.001	11	view →
LSCC	Male	All	−1.186	<.001	9	view →
LUAD	Female	III,IV	−1.137	<.001	9	view →
PDAC	Male	II,III,IV	−0.568	<.001	6	view →

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

Exploration

Same gene, other analysis: SULT1A1 RNA expression & survival · all SULT1A1 data types