This is supported by the analysis from Trock et al. (2008) who found, in a retrospective analysis of 635 patients with BF after RP, that there was an increase in PCa-specific survival after salvage RT in patients with short PSA-DT ≤ 6 months only and not in those with a longer PSA-DT. The gene discussed is KLK3; the disease is posterior cortical atrophy.