PCA3 and posterior cortical atrophy: These results revealed that the polymorphism of TAAA STR in the promoter of PCA3 maybe is a genetic risk marker for PCa in Chinese population.Of course, this meaningful conclusions of the reapet times of the TAAA may modulate PCA3 expression still need the confirmation of correlation research from different genetic polymorphism types and the PCA3 mRNA expression in individual or prospective correlation research.