10.6084/m9.figshare.5104588.v1 Duan J. Duan J. Martinez M. Martinez M. Sanders A.R. Sanders A.R. Hou C. Hou C. Burrell G.J. Burrell G.J. Krasner A.J. Krasner A.J. Schwartz D.B. Schwartz D.B. Gejman P.V. Gejman P.V. Supplementary Material for: <i>DTNBP1 (Dystrobrevin Binding Protein 1)</i> and Schizophrenia: Association Evidence in the 3′ End of the Gene Karger Publishers 2007 Single nucleotide polymorphism Haplotype Linkage disequilibrium Complex disorder Dystrobrevin binding protein 1 Schizophrenia Association 2007-05-02 00:00:00 Dataset https://karger.figshare.com/articles/dataset/Supplementary_Material_for_i_DTNBP1_Dystrobrevin_Binding_Protein_1_i_and_Schizophrenia_Association_Evidence_in_the_3_End_of_the_Gene/5104588 <i>Objectives:</i><i>Dysbindin</i> (<i>DTNBP1</i>) has been identified as a susceptibility gene for schizophrenia (SZ) through a positional approach. However, a variety of single nucleotide polymorphisms (SNPs) and haplotypes, in different parts of the gene, have been reported to be associated in different samples, and a precise molecular mechanism of disease remains to be defined. We have performed an association study with two well-characterized family samples not previously investigated at the <i>DTNBP1</i> locus. <i>Methods:</i> We examined 646 subjects in 136 families with SZ, largely of European ancestry (EA), genotyping 26 SNPs in <i>DTNBP1</i>. <i>Results:</i> Three correlated markers (rs875462, rs760666, and rs7758659) at the 3′ region of <i>DTNBP1 </i>showed evidence for association to SZ (p = 0.004), observed in both the EA (p = 0.031) and the African American (AA) subset (p = 0.045) with the same over-transmitted allele. The most significant haplotype in our study was rs7758659-rs3213207 (global p = 0.0015), with rs3213207 being the most frequently reported associated marker in previous studies. A non-conservative missense variant (Pro272Ser) in the 3′ region of <i>DTNBP1</i> that may impair <i>DTNBP1</i> function was more common in SZ probands (8.2%) than in founders (5%) and in dbSNP (2.1%), but did not reach statistical significance. <i>Conclusion: </i>Our results provide evidence for an association of SZ with SNPs at the 3′ end of <i>DTNBP1</i> in the samples studied.