Moreover, the addition of DOCK2 to the prognostic model increased Harrell’s C-index from 0.599 (D’Amico alone) to 0.645 (D’Amico + DOCK2), suggesting that DOCK2 may improve PCa risk stratification at the time of diagnosis and as a supplement to the D’Amico risk stratification. The gene discussed is DOCK2; the disease is posterior cortical atrophy.