Across TCGA pan-cancer cohorts, IGKV4-1 mass-spec protein is linked to patient survival in 8 of 34 cancer types, making it a survival-associated IGKV4-1 data layer compared with 26 for mass-spec protein and 2 for mutation status.
The strongest signal is observed in clear cell renal cell carcinoma (CCRCC), where higher IGKV4-1 mass-spec protein is associated with better disease-free survival. In most high-consensus cancer types, elevated IGKV4-1 expression acts as an unfavorable survival marker, although some lineages such as CCRCC and LSCC show a favorable association.
CCRCC, LSCC, and COAD are the cancer types where IGKV4-1 mass-spec protein most reproducibly stratifies survival.
mass-spec protein survival associations by lineage
Ranked by sampling consensus. AUC1 and AUC2 indicate survival in the high- and low-expression groups, respectively; the lower AUC marks the poorer-surviving group. p-values are from the log-rank test.