title: Common Polymorphisms in the Age of Research Domain Criteria (RDoC): Integration and Translation.
abstract: The value of common polymorphisms in guiding clinical psychiatry is limited by the complex polygenic architecture of psychiatric disorders. Common polymorphisms have too small an effect on risk for psychiatric disorders as defined by clinical phenomenology to guide clinical practice. To identify polymorphic effects that are large and reliable enough to serve as biomarkers requires detailed analysis of a polymorphism's biology across levels of complexity from molecule to cell to circuit and behavior. Emphasis on behavioral domains rather than clinical diagnosis, as proposed in the Research Domain Criteria framework, facilitates the use of mouse models that recapitulate human polymorphisms because effects on equivalent phenotypes can be translated across species and integrated across levels of analysis. A knockin mouse model of a common polymorphism in the brain-derived neurotrophic factor gene (BDNF) provides examples of how such a vertically integrated translational approach can identify robust genotype-phenotype relationships that have relevance to psychiatric practice.
authors: Department of Psychiatry, Weill Cornell Medical College of Cornell University, New York, New York.. Electronic address: ceg2004@med.cornell.edu.
authors: Charles E
authors: CE
authors: Glatt
authors: Department of Psychiatry, Weill Cornell Medical College of Cornell University, New York, New York.; Department of Pharmacology, Weill Cornell Medical College of Cornell University, New York, New York.; Sackler Institute for Developmental Psychobiology, Weill Cornell Medical College of Cornell University, New York, New York.
authors: Francis S
authors: FS
authors: Lee
mesh_terms: D000818:Animals; D001519:Behavior; D019208:Brain-Derived Neurotrophic Factor / Q000235:genetics; D004195:Disease Models, Animal; D055879:Gene Knock-In Techniques; D006801:Humans; D001523:Mental Disorders / Q000175:diagnosis* / Q000235:genetics*; D051379:Mice; D010641:Phenotype; D011110:Polymorphism, Genetic
chemical_list: D019208:Brain-Derived Neurotrophic Factor
keywords: Anxiety; BDNF Val66Met; Behavioral dimension; Common polymorphism; Fear learning; Genetic biomarker