We carried out nonparametric linkage (NPL) analysis of the five chromosome 18 data sets for bipolar illness, as well as of the combined data set. Prior to analysis, we constructed a common genetic map and computed separate marker allele frequencies for each data set. We also attempted to create two
Bipolar disorder and chromosome 18: An analysis of multiple data sets
โ Scribed by Judith A. Badner; Lynn R. Goldin
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 29 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0741-0395
No coin nor oath required. For personal study only.
โฆ Synopsis
There have been conflicting reports of linkage between bipolar disorder and chromosome 18. We have analyzed five separate data sets using the two-point affected sib-pair method and family based association methods. We have found evidence of linkage in multiple data sets and differences in maternal and paternal allele sharing. Suggestive, though nonsignificant, evidence of linkage disequilibrium of two tightly linked markers has also been demonstrated in multiple data sets.
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Our aim was to analyze the GAW10 bipolar data on chromosome 18, using three well-known affected-sib-pair methods. Analyses were carried out on both individual and combined data sets. In these analyses we defined the affected phenotype to include only individuals with diagnosis of bipolar I. We obser
We find a meta-data set (715 families, up to 1,124 sib pairs) for bipolar illness to have a strong signal in a 10 cM region around D18S40, and excess paternal sharing on the q arm near marker D18S64. We describe a method for metaanalysis of microsatellite marker data using affected sib-pair (ASP) me
Evidence consistent with the existence of genetic linkage between bipolar disorder and three regions on chromosome 18, the pericentromeric region, 18q21, and 18q22-q23 have been reported. Some analyses indicated greater evidence for linkage in pedigrees in which paternal transmission of disease occu
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