GDF15 and posterior cortical atrophy: We have also previously reported the presence of ANXA2 (Annexin A2), CLSTN1 (Calsyntenin 1), FASN (Fatty acid Synthesis), FLNC (Filamin C, gamma), FOLH1 (Folate Hydrolase (prostate specific membrane antigen)-1) and GDF15 (Growth Differentiation Factor 15), as PCa biomarkers in exosomes derived from PCa cells [52].