miR-34a-5p and miR-34b-5p, which were upregulated 1.6- and 1.8-fold in the current study, respectively, are induced by DNA damage in various types of cell (29,30), and by p53, which is activated by DNA break-induced ataxia telangiectasia mutated activation (29). Here, TP53 is linked to Ataxia-telangiectasia.