Hilal Latifa, Nandrot Emeline, Belmekki Mohamed, Chefchaouni Mohamed, El Bacha Siham, Benazzouz Bouchra, Hajaji Yassir, Gribouval Olivier, Dufier Jean, Abitbol Marc, Berraho Amina
Laboratoire de Génétique et Biologie Moléculaire de la Faculté des Sciences, Université IBN Tofail, Kénitra, Morocco.
Ophthalmic Genet. 2002 Dec;23(4):199-208. doi: 10.1076/opge.23.4.199.13881.
Autosomal dominant cerulean cataracts (ADCC) have previously been mapped to two loci: one on chromosome 17q24 and the other on chromosome 22q11.2-q12.2, which includes the beta-B2 crystallin (CRYBB2) candidate gene. Using polymorphic markers in these regions (D17S802, D17S836, D17S1806 and CRYBB2, D22S258) for linkage analysis, we excluded these loci in a large Moroccan family presenting with an unusual form of ADCC with early onset of lens opacities and rapid evolution. This finding confirms the clinical and genetic heterogeneity of autosomal dominant congenital cerulean cataracts.
常染色体显性遗传性天蓝色白内障(ADCC)先前已被定位到两个基因座:一个在17号染色体q24区域,另一个在22号染色体q11.2 - q12.2区域,该区域包含β - B2晶状体蛋白(CRYBB2)候选基因。我们利用这些区域的多态性标记(D17S802、D17S836、D17S1806以及CRYBB2、D22S258)进行连锁分析,在一个患有具有晶状体混浊早发和快速进展的不寻常形式ADCC的大型摩洛哥家族中排除了这些基因座。这一发现证实了常染色体显性遗传性先天性天蓝色白内障的临床和遗传异质性。