EEF1A2 and posterior cortical atrophy: The ALU 260/111 copy number ratio showed a significant negative correlation with EEF1A2 and ESR1 copy number (ALU 260/111 vs. EEF1A2: −0.368, p-value = 0.02; ALU 260/111 vs. ESR1: −0.323, p-value = 0.04), which means that a decrease in the ALU 260/111 ratio was associated with an increase in EEF1A2 and ESR1 copy number (and thus with an increase in ccfDNA concentration) in the plasma of PCa patients.