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The andalusian “multiplex families with bipolar disorder “: a revaluation of the cohort study (1997-2013). Guzmán, José Mayoral Cleries, Fermín Moreno-Kustner, Berta Rivas, Fabio Romero, Pablo Gay, Eudoxia González, María José Gil, Susana Cabaleiro, Francisco Rio, Francisco Pérez, Fermín Haro, Jesús Nöthen, Markus Streit, Fabian Strohmaier, Jana Rietschel, Marcella Psicosis maniacodepresiva Objectives. Bipolar disorder (BD) is highly heritable, and gene identification will elucidate biological factors and gene-environment interactions. Multiplex families represent a promising resource for identifying rare variants and polygenic effects. However, such families are difficult to recruit. In 1997, >100 multiplex Andalusian BD pedigrees - the largest of which contains >20 affected members- were recruited within an Andalusian-German collaboration study. Since then, the Andalusian psychiatric network and biobank facilities have been expanded in order to facilitate psychiatric research. Therefore in 2013, the Andalusian-German collaborators initiated a follow-up study of this cohort in order to identify new genetic and environmental factors for BD aetiology and clinical course. Methods. In 1997, BD patients at Andalusian psychiatric hospitals who reported a family history of BD were asked to inform their families about the study. All consenting family members (N= 937; BPI/II=265; Recurrent Mayor Depression=149) were assessed using a structured psychiatric interview for life-time best estimate psychiatric diagnosis (SADS) and the family history method, and blood was obtained for DNA genetic analysis. Follow-up involves reassessment of diagnosis, neuropsychological testing (CANTAB), and the collection of biomaterials (RNA, Plasma, IPS, hair cortisol, etc.). Written informed consent is obtained for all study procedures and analyses. Results. For the first three families, follow-up assessments and biomaterial-processing have been completed. Follow-up of the remaining families is ongoing. Conclusion. This cohort represents a unique resource for the investigation of BD aetiology and clinical course, and will be available to international researchers from other sciences. 2014-12-01T11:40:59Z 2014-12-01T11:40:59Z 2014-09-15 2014-12-01 conference output http://hdl.handle.net/10630/8506 eng XVI World Congress of Psychiatry Madrid 14-18 septiembre 2014 open access