NAALADL2 is located on 3q26.31 and is a member of the glutamate carboxypeptidase II family along with the widely studied PCa marker PSMA (NAALAD1)12, and its expression has previously been associated with prostate tumour stage and grade13 with expression predicting poor survival following radical prostatectomy13. The gene discussed is FOLH1; the disease is posterior cortical atrophy.