SLC8A1 and neoplasm: Considering a balance between classification accuracy and the number of lncRNAs, six lncRNAs were identified as diagnostic biomarkers including five tumor suppressor lncRNAs (LINC01697, LINC02487, LOC105376575, AC005083.1, and SLC8A1-AS1) and one oncogenic lncRNAs (U62317.1).