We highlight two examples of AD colocalization at the cis-regulatory loci of BLNK and CTSH, which were uniquely identified by ColocBoost as neither gene reached genome-wide significance of 5 × 10−8 in AD GWAS (p-values of 1.1 × 10−7 and 2.18 × 10−7 respectively, indication suggestive associations), which partly explains why they were missed by COLOC-union and HyPrColoc. This evidence concerns the gene CTSH and Alzheimer disease.