While the DNA repair process requires the karyopherin-dependent import of DNA repair proteins, such as BRAC1, NBS1, and p53 binding protein 1 in cancer cells [8,35,36], it would be interesting to determine whether KPNB1 inhibition disturbs the importation such repair proteins in HNSCC cells. Here, XRCC6P5 is linked to head and neck squamous cell carcinoma.