MAPT and red-green color blindness: SNPs at MOBP (rs1768208, Pmeta=2.1 × 10−7) (Fig. 1c), SOS1 (rs963731, Pmeta=1.8 × 10−7) (Fig. 1d) and MAPT H1c haplotype (rs242557, Pmeta=7.9 × 10−6) had suggestive evidence for association with CBD.