NRG1 and schizophrenia: Recent meta-analyses provided support for the association of NRG1 with schizophrenia, although with a variety of haplotypes located throughout the gene (Li, Collier, & He, 2006; Munafò, Thiselton, Clark, & Flint, 2006; Tosato, Dazzan, & Collier, 2005).