For the replication, genotyping was performed using TaqMan chemistry-based allelic discrimination assays (Applied Biosystems (ABI), Foster City, CA) on the ABI 7500 Fast Real-Time System followed by analysis with SDS 7500 software v2.0.1. The ABI assays used were: rs1020004, C_7604953_10 and rs1990622, C_11171598_10. A nearby novel genetic variation (possible deletion) was found to interfere with correct genotyping of the T allele of SNP rs6966915 using ABI reagents C_31573289_10 (as well as by DNA sequencing), thus this SNP was not used further.
