Shared eQTL genes were only observed in blood and included BCL3, CLPTM1, PVRL2 and TOMM40, with expression of BCL3 and CLPTM1 positively correlating with AD and PD and expression of PVRL2 and TOMM40 positively correlating with AD and LBD. This evidence concerns the gene CLPTM1 and Parkinson disease.