GNL3 and attention deficit-hyperactivity disorder: Existing GWAS analyses have further reported that the SNP rs1080500 plays a role in both schizophrenia and attention deficit hyperactivity disorder (ADHD), with a proximity of only about 20 kb to PRKCD. Additionally, SNP rs1080500 also serves as an eQTL locus for GNL3, a gene known for its role in regulating neuron differentiation [84].