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Identification of a Psoriasis Susceptibility Locus on Chromosome 6p in Chinese Han Population
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF DERMATOLOGY
- Issue:
- 3
- DOI:
- 10.3760/j.issn:0412-4030.2004.03.001
- Key Word:
- 银屑病;染色体,人,6p;连锁(遗传学)
Abstract： 目的鉴定6号染色体短臂上是否存在寻常性银屑病的易感基因.方法用6号染色体短臂上的8个微卫星标记对46个寻常性银屑病家系共272个个体(包括143例患者和129例非患者)进行基因分型研究,并用Genehunter软件(2.0 Version)对基因分型结果进行两点和多点参数和非参数连锁分析.结果①两点连锁分析:非参数连锁分析揭示3个相邻的标记D6S276、D6S1610和D6S1575的NPL值分别为2.69、3.58和2.84,对应的P值分别为0.0 048、0.0 006和0.0 033;参数分析在D6S1610位点处得出HLOD=4.01和较高的连锁家系比例α=70%.②多点连锁分析:在44.9-62.3 cM的染色体区域内,非参数连锁分析的NPL值均＞3,D6S276(44.9 cM)、D6S1610(53.9 cM)和D6S1575(62.3 cM)均位于这个范围内,其中在D6S1610处NPL值达到最高为4.11,对应的P值为0.0 002;参数分析在D6S1610处,得出多点分析的HLOD峰值为3.17,连锁家系比例为60%.结论6号染色体短臂上存在寻常性银屑病的易感基因.
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