Utilizing markers that map to five PCa susceptibility loci, including HPC1 at 1q24–25, PCAP at 1q42–43, CAPB at 1p36, HPC20 on chromosome 20, and HPCX at Xq27–28, a total of 126 people (including 89 men with PCa) were genotyped. The gene discussed is STX1A; the disease is posterior cortical atrophy.