KLF4 and xeroderma pigmentosum: Within the Turopolje breed, XP-EHH and XP-nSL analyses revealed the presence of POU4F1, OBI1, KLF4, DPYD, PTBP2, DOCK5, GNRH1, KCTD9, CDCA2, and EBF2 for XP-EHH, and PTBP2, DPYD, MACROD2, KIF16B for XP-nSL.