In the case of SNPs in chromosome 19 (those located in XRCC1, ERCC2 and ERCC1 genes), haplotype CCGGG was present only in PCa patients from Canary and Catalonia, while haplotype CCGTG was present only in PCa patients from Andalusia and Basque Country. This evidence concerns the gene ERCC1 and posterior cortical atrophy.