The effects of reduced fertility, method of ascertainment, and a second unlinked locus on affected sib-pair marker allele sharing.
The effects of reduced fertility, method of ascertainment, and a second unlinked locus on affected sib-pair marker allele sharing.
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生育率降低、确定方法和第二个未连锁基因座对受影响的同胞对标记等位基因共享的影响。
DOI:
10.1002/ajmg.1320160214
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发表时间:
1983
期刊:
影响因子:
--
通讯作者:
Risch,N
中科院分区:
文献类型:
--
作者:
Risch,N
The method of affected sib‐pair marker allele sharing has been used not only for the detection of linkage, but also for discerning inheritance. The application of this method has included the tacit assumption of no selective disadvantage for affected individuals. For some of the disorders analyzed by this method, this assumption is not tenable. Also, the method of ascertainment of affected sib pairs is not taken into account. It is shown here that the ascertainement procedure and reduced reproductivity of affected individuals can alter the expected distribution of affected sib‐pair marker allele sharing. The effect is greatest for a recessive disease susceptibility locus. While the effect of reduced reproductivity is to inflate the gene frequency necessary to account for the observed distribution, a second unlinked disease susceptibility locus can diminish this effect. Application to type 1 diabetes shows that according to a simple recessive model with 50% penetrance, to observed distribution of affected sib‐pair HLA haplotype sharing requires a gene frequency in the range of 0.55–0.60, much greater than estimates previously proposed. According to such a model, the frequency of disease would be around 15%, clearly out to range of the observed frequency of 0.4%.
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影响因子:
1.9
作者:
S. Hodge;J. Rotter;K. L. Lange
通讯作者:
K. L. Lange
DOI:
10.1002/ajmg.1320120309
发表时间:
1982
期刊:
American journal of medical genetics
影响因子:
--
作者:
Suarez,B;O'Rourke,D;VanEerdewegh,P
通讯作者:
VanEerdewegh,P
影响因子:
1.9
作者:
B. Degnbol;A. Green
通讯作者:
A. Green
影响因子:
1.9
作者:
Brian K. Suarez;J. P. Rice;Theodore Reich
通讯作者:
Theodore Reich
影响因子:
3.2
作者:
Raum,D;Awdeh,Z;Alper,CA
通讯作者:
Alper,CA