Sib-pair linkage analyses were used to search for linkage to a set of chromosome 19 and 21 marker loci in two sets of families with Alzheimer's disease. The advantage of this technique is that no assumption is made about the mode of inheritance of the disease. Some mild suggestions of linkage were f
Linkage analysis of Alzheimer's disease with methods using relative pairs
β Scribed by Dr. Heike Blossey; Daniel Commenges; Jane M. Olson
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 356 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0741-0395
No coin nor oath required. For personal study only.
β¦ Synopsis
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 published likelihood results and appear to be more powerful than affected sib pair methods. 1993 Wiley-Liss, Inc.
π SIMILAR VOLUMES
Sib pairs drawn from the simulated common oligogenic disease families were selected for extreme quantitative trait scores and analyzed using interval mapping and multipoint methods. Linkage analyses of 112 selected sib pairs, in which one or more members had trait values exceeding the disease thresh
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 2
## 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.
## Abstract We illustrate the use of Gibbs sampling for combined segregation and linkage analysis using lateβonset families in the Duke Alzheimer's disease (AD) data set. The disease penetrance model is flexible, incorporating variable age of disease onset, sporadic cases, and unknown or uncertain