Analysis of the Cancer Cell Line Encyclopedia revealed that KYSE30 cells harbouring CDKN2A gene mutations had wild-type TP53 (p53Nor/p16Mut), whereas KYSE150 and KYSE180 cells harbouring TP53 gene mutations had wild-type CDKN2A (p53Mut/p16Nor). Here, CDKN2A is linked to cancer.