We then examined whether the prognosis of cancer patients was related to the overexpression of KDM1A, KDM1B, KDM2A, KDM2B, KDM3B, KDM4A, KDM5A, KDM5B, KDM5D, and KDM6B in PC tumor tissue. This evidence concerns the gene KDM2B and pachyonychia congenita.