The 1.54-1.62 fold increase in PCA susceptibility was associated with the CCR5 rs1799988 recessive genetic model (ORunadjusted =1.62; 95%CI=1.08, 2.42) and the CXCR7 rs1045879 AG+GG genotype (ORunadjusted = 1.54; 95%CI = 1.07, 2.22; P = 0.02) was lost in the age adjusted risk models. The gene discussed is ACKR3; the disease is posterior cortical atrophy.