TY - JOUR
T1 - Chromosome 13q13-q14 locus overlaps mood and psychotic disorders
T2 - The relevance for redefining phenotype
AU - Maziade, Michel
AU - Chagnon, Yvon C.
AU - Roy, Marc André
AU - Bureau, Alexandre
AU - Fournier, Alain
AU - Mérette, Chantal
N1 - Funding Information:
We are grateful to our professional research assistants: Louise Bélanger, Linda René, Lisette Gagnon, Claudie Poirier, Nicole Leclerc, Julie Lamarche, Pierrette Boutin, David Demers, Lise St-Germain, Anne-Marie Simard and to the family members, adults and children, who participated in this study. We also thank IREP for their collaboration regarding the BALSAC database. This research was supported in part by a group Grant (no. MGC-14501) from the Canadian Institutes of Health Research (CIHR) and another individual CIHR Grant (no. MT-12854), and also by a Canada Research Chair (no. 950-200810) in the genetics of neuropsychiatric disorders of which Maziade is the Chair. Bureau is supported by a fellowship from the Fonds de la recherche en santé du Québec (FRSQ).
PY - 2009
Y1 - 2009
N2 - The nosology of major psychoses is challenged by the findings that schizophrenia (SZ) and bipolar disorder (BP) share several neurobiological, neuropsychological and clinical phenotypic characteristics. Moreover, several vulnerability loci or genes may be common to the two DSM disorders. We previously reported, in a sample of 21 kindreds (sample 1), a genome-wide suggestive linkage in 13q13-q14 with a common locus (CL) phenotype that crossed the diagnostic boundaries by combining SZ, BP and schizoaffective disorders. Our objectives were to test phenotype specificity in a separate sample (sample 2) of 27 kindreds from Eastern Quebec and to also analyze the combined sample of 48 kindreds (1274 family members). We performed nonparametric and parametric analyses and tested as phenotypes: SZ alone, BP alone, and a CL phenotype. We replicated in sample 2 our initial finding with CL with a maximum NPLpair score of 3.36 at D13S1272 (44Mb), only 2.1Mb telomeric to our previous maximum result. In the combined sample, the peak with CL was at marker D13S1297 (42.1Mb) with a NPLpair score reaching 5.21, exceeding that obtained in each sample and indicating consistency across the two samples. Our data suggest a susceptibility locus in 13q13-q14 that is shared by schizophrenia and mood disorder. That locus would be additional to another well documented and more distal 13q locus where the G72/G30 gene is mapped.
AB - The nosology of major psychoses is challenged by the findings that schizophrenia (SZ) and bipolar disorder (BP) share several neurobiological, neuropsychological and clinical phenotypic characteristics. Moreover, several vulnerability loci or genes may be common to the two DSM disorders. We previously reported, in a sample of 21 kindreds (sample 1), a genome-wide suggestive linkage in 13q13-q14 with a common locus (CL) phenotype that crossed the diagnostic boundaries by combining SZ, BP and schizoaffective disorders. Our objectives were to test phenotype specificity in a separate sample (sample 2) of 27 kindreds from Eastern Quebec and to also analyze the combined sample of 48 kindreds (1274 family members). We performed nonparametric and parametric analyses and tested as phenotypes: SZ alone, BP alone, and a CL phenotype. We replicated in sample 2 our initial finding with CL with a maximum NPLpair score of 3.36 at D13S1272 (44Mb), only 2.1Mb telomeric to our previous maximum result. In the combined sample, the peak with CL was at marker D13S1297 (42.1Mb) with a NPLpair score reaching 5.21, exceeding that obtained in each sample and indicating consistency across the two samples. Our data suggest a susceptibility locus in 13q13-q14 that is shared by schizophrenia and mood disorder. That locus would be additional to another well documented and more distal 13q locus where the G72/G30 gene is mapped.
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U2 - 10.1038/ejhg.2008.268
DO - 10.1038/ejhg.2008.268
M3 - Article
C2 - 19172987
AN - SCOPUS:67749088171
SN - 1018-4813
VL - 17
SP - 1034
EP - 1042
JO - European Journal of Human Genetics
JF - European Journal of Human Genetics
IS - 8
ER -