Linkage analysis of a complex disease: Application to familial Alzheimer's disease
β Scribed by Dr. R. J. Neuman; J. P. Rice; C. L. Hampe; T. E. Burroughs; S. O. Moldin
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 383 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0741-0395
No coin nor oath required. For personal study only.
β¦ Synopsis
Evidence for linkage of the Alzheimer's gene to markers on chromosomes 19 and 2 1 was assessed using single-locus and two-locus models of inheritance. Families were divided into groups determined by their average age at onset. The youngest group produced higher lod scores for markers on chromosome 21 while an older group showed evidence for linkage to markers on chromosome 19. Two-locus models of disease were used to analyze the youngest group for linkage to pairs of markers on chromosome 21 and an older group with markers on chromosome 19.
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## Abstract Familial Alzheimer disease is a neurological disorder of adult onset. Three research centers have each contributed their families and genetic linkage data for combined analyses. The data from the Duke and Boston centers, comprising 73 pedigrees for whom numerous markers on chromosomes 1
Four relative-pair methods for detecting genetic linkage were applied to familial Alzheimer's disease data. Results obtained using an extended Haseman-Elston test and a weighted rank pairwise correlation test, which both use information from all relative pairs, were consistent with previously publis
## Abstract The twoβpoint lod score linkage analysis of familial Alzheimer's disease is sensitive to the parameters of ageβdependent penetrance rate, phenocopy rate, heterogeneity, and marker gene frequency. If unsuitable parameters are used, it may lead to false negative evidence against linkage.