PIK3CB and melanoma: Among the well-documented melanoma associated pathways, PI3K/Akt signalling (sigPCCM = 58, sigPCLN = 76) along with MAPK signalling (sigPCCM = 44, sigPCLN = 58) and EGFR signalling (sigPCCM = 49, sigPCLN = 59) too shares genes with a significant number of pathways.