There was no statistically significant correlation between Δ SUVmax or Δ SUVmean and Δ CT prostate volumen (r = −0.062; p = 0.86 and r = 0.007; p = 0.98, respectively), Δ MRI prostate volumen (r = −0.091; p = 0.80 and r = −0.195; p = 0.59, respectively), Δ MRI tumor volumen (r = −0.127; p = 0.73 and r = −0.541; p = 0.12, respectively) as well as Δ PSA (r = 0.23; p = 0.49 and r = 0.208, p = 0.538). The gene discussed is KLK3; the disease is neoplasm.