SNHG12 and gastric adenocarcinoma: We found several lncRNAs as prognostic biomarkers including LINC00958 and LINC00707 in HNSC; SNHG20 and SNHG12 in LIHC (correlated with reduced OS with worse prognosis); SNHG20 in READ; and PVT1 and MAGI2-AS3 in STAD (correlated with good prognosis).