PCa exhibited significant associations with insulin-like growth factor 1 (r = 1.119051258, P = .004101067), Lipoprotein A (r = 1.120348291, P = .038093372), total protein (r = 0.87643517, P = .01657563), and non-albumin protein (r = 0.905333153, P = .03103913). This evidence concerns the gene IGF1 and posterior cortical atrophy.