DNA samples for cases and controls were obtained from newborn bloodspots linked to population registry data [65]. Cases were identified with the ICD-10 code F10.2 (AD; n = 944); controls were from the iPSYCH group (n = 11,408; neffective = 3,487)). The iPSYCH sample was genotyped on the Psych Array (Illumina, San Diego, CA, US). GWAS QC, imputation against the 1,000 Genomes Project panel [46] and association analysis using the Ricopili pipeline [66] were performed. The current study is part of a general study in iPSYCH investigating the comorbidity of alcohol misuse and psychiatric disorders.
