KLK3 and posterior cortical atrophy: A retrospective cohort study found that after EBRT, Haitian-Creole-speaking PCa patients had a statistically significantly greater change in serum PSA levels from pre-to post-treatment (indicating likely biochemical recurrence) compared to English-speaking patients (PSA change; 5.8 vs 8.7 ng/ml, p = 0.039) [60].