Truncating mutations in RBM12 are associated with psychosis

Nature Genetics 49, 1251 (2017). doi:10.1038/ng.3894 Authors: Stacy Steinberg, Steinunn Gudmundsdottir, Gardar Sveinbjornsson, Jaana Suvisaari, Tiina Paunio, Minna Torniainen-Holm, Michael L Frigge, Gudrun A Jonsdottir, Johanna Huttenlocher, Sunna Arnarsdottir, Oddur Ingimarsson, Magnus Haraldsson, Thorarinn Tyrfingsson, Thorgeir E Thorgeirsson, Augustine Kong, Gudmundur L Norddahl, Daniel F Gudbjartsson, Engilbert Sigurdsson, Hreinn Stefansson & Kari Stefansson Thus far, a handful of highly penetrant mutations conferring risk of psychosis have been discovered. Here we used whole-genome sequencing and long-range phasing to investigate an Icelandic kindred containing ten individuals with psychosis (schizophrenia, schizoaffective disorder or psychotic bipolar disorder). We found that all affected individuals carry RBM12 (RNA-binding-motif protein 12) c.2377G>T (P = 2.2 × 10−4), a nonsense mutation that results in the production of a truncated protein lacking a predicted RNA-recognition motif. We replicated the association in a Finnish family in which a second RBM12 truncating mutation (c.2532delT) segregates with psychosis (P = 0.020). c.2377G>T is not fully penetrant for psychosis; however, we found that carriers unaffected by psychosis resemble patients with schizophrenia in their non-psychotic psychiatric disorder and neuropsychological test profile (P = 0.0043) as well as in their life outcomes (including an increased chance of receiving disabil...
Source: Nature Genetics - Category: Genetics & Stem Cells Authors: Tags: Letter Source Type: research