Significantly, data from GEPIA 2 (http://gepia2.cancer-pku.cn) unveiled that low KCNK15-AS1 expression was related to short disease free survival of PC patients (median value of KCNK15-AS1 level was regarded as cutoff value, p = 0.021) (Fig. 1B). The gene discussed is KCNK15; the disease is pachyonychia congenita.