NKD2 and lung cancer: The downregulation of one of these lncRNAs, namely AK126698, in NSCLC cisplatinum-resistant cells suppressed the induction of apoptosis induced by cisplatinum in A549 cells, possibly through decreased naked cuticle homolog 2 (NKD2) expression and increased β-catenin expression, accumulation and nuclear translocation resulting in an altered WNT cellular signaling pathway and significantly depressed apoptosis induced by cisplatinum in lung cancer A549 cells.