nSL results obtained for S_ITA corroborated those based on the DIND statistics as regards a gene network belonging to the mucin type O-glycan biosynthesis pathway (Additional file 1: Figure S6, Table S4) and further indicated genes from the basal cell carcinoma pathway as subjected to positive selection (Additional file 1: Figure S7, Table S4). This evidence concerns the gene MUC5AC and basal cell carcinoma.