Further evidence for linkage of bipolar disorder to chromosomes 6 and 17 in a new independent pedigree series.

Bipolar Disorders
T A GreenwoodJ R Kelsoe

Abstract

We have previously reported the results of a linkage analysis of bipolar disorder in an initial set of 20 pedigrees ascertained through collaboration among three sites. We now report the results of our genome-wide linkage analysis in an independent sample of 34 pedigrees segregating bipolar disorder. Families were ascertained through a bipolar I or II disorder proband for the presence of bipolar I disorder, bipolar II disorder, or recurrent major depression in at least two other family members. A total of 440 markers at an average spacing of 8 cM were genotyped in 229 family members using fluorescent methods. Initial nonparametric analyses of chromosomes 6 and 17 provided evidence for a modest replication of linkage to these chromosomes previously reported in other studies. Additional analyses using multipoint parametric methods provided further evidence to support the 6q25 region with a heterogeneity logarithm of odds score of 3.28. Evidence from two-point parametric analyses also provides a modest replication of our previous findings of linkage to the 23 cM region of chromosome 22q13 in our original University of California, San Diego sample of 20 families and 57 families from the National Institute of Mental Health bipolar d...Continue Reading

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Citations

Jun 14, 2013·Journal of Affective Disorders·Tiffany A GreenwoodJohn R Kelsoe
Aug 27, 2013·Journal of Affective Disorders·Tiffany A GreenwoodJohn R Kelsoe
Feb 9, 2017·Psychiatric Genetics·Sally Isabel SharpAndrew McQuillin

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Bipolar Disorder

Bipolar disorder is characterized by manic and/or depressive episodes and associated with uncommon shifts in mood, activity levels, and energy. Discover the latest research this illness here.