Claustres M, Desgeorges M, Kjellberg P, Tissot C, Demaille J
Laboratoire de Biochimie Génétique, INSERM U249, CNRS UPR8402, Institut de Biologie, Montpellier, France.
Hum Genet. 1992 Dec;90(4):464-6. doi: 10.1007/BF00220479.
We have analyzed 131 unrelated families from Southern France for 29 known cystic fibrosis (CF) mutations identified in 8 exons of the cystic fibrosis transmembrane regulator gene. All these mutations were detected by amplification of DNA by the polymerase chain reaction (PCR) followed by restriction enzyme digestion or hybridization with allele specific oligoprobes. The most frequent mutations after the delta F508 deletion (frequency: 63%) were G542X (5.3%), delta I507 (1.1%), and N1303K (0.76%). Seven other mutations (621 + 1G --> T, Y122X, R347P, R334W, S549N, G551D, R1162X) were each identified in only one CF chromosome. Apart from G542X, most of the other mutations identified in this study were found to be associated with 7-(GATT)-repeats allele of IVS6A. In Southern France, only 73% of CF chromosomes could be identified by the analysis of 30 mutations.
我们分析了来自法国南部的131个非近亲家庭,检测了囊性纤维化跨膜传导调节因子基因8个外显子中的29个已知囊性纤维化(CF)突变。所有这些突变均通过聚合酶链反应(PCR)扩增DNA,随后进行限制性内切酶消化或与等位基因特异性寡核苷酸探针杂交来检测。除了F508缺失(频率:63%)外,最常见的突变是G542X(5.3%)、I507缺失(1.1%)和N1303K(0.76%)。其他7种突变(621 + 1G→T、Y122X、R347P、R334W、S549N、G551D、R1162X)仅在一条CF染色体上被鉴定出来。除G542X外,本研究中鉴定出的大多数其他突变与IVS6A的7-(GATT)-重复等位基因相关。在法国南部,通过分析30种突变仅能鉴定出73%的CF染色体。