Across TCGA pan-cancer cohorts, GPR39 mass-spec protein differs between tumor and matched normal tissue in 3 of 18 cancer types tested, making tumor–normal expression one of GPR39’s most consistent transcriptional readouts.

The strongest signal is observed in lung squamous cell carcinoma (LSCC), where GPR39 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types GPR39 is over-expressed in tumor, although a few such as LSCC and LUAD show the opposite, repressed pattern.

LSCC, PDAC, and LUAD are the cancer types where GPR39 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 GPR39 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
LSCC	All	III,IV	−0.751	<.001	8	view →
PDAC	All	III,IV	+1.157	.033	1	view →
LUAD	Male	All	−0.140	.040	1	view →

Pink = over-expressed in tumor, green = repressed in tumor. Showing the 3 strongest of 3 lineages.

Exploration

Same gene, other analysis: GPR39 RNA expression & survival · all GPR39 data types