Mossman J, Blunt S, Stephens R, Jones E E, Pembrey M
Arch Dis Child. 1983 Nov;58(11):911-5. doi: 10.1136/adc.58.11.911.
We describe a 3 year old girl with the typical clinical features of the X linked recessive condition, Hunter's disease. The diagnosis was confirmed by the pattern of urinary excretion of glycosaminoglycans and the absence of iduronate sulphatase activity in her fibroblasts. She also had an apparently balanced reciprocal chromosomal translocation 46XX,t(X:5) with the X breakpoint being between q26 and q27. Pedigree analysis, and the normal iduronate sulphatase activity in the mother's fibroblasts, serum, and hair roots indicate that the affected child represents a new mutation. Since the parents' karyotypes are normal, it seems that the translocation disrupted the iduronate sulphatase gene itself, thus mapping this to Xq26-27 for the first time. The severe clinical features, not expected in a girl, may be explained by non-random X inactivation.
我们描述了一名患有X连锁隐性疾病——亨特氏病典型临床特征的3岁女孩。通过糖胺聚糖的尿排泄模式以及她的成纤维细胞中艾杜糖醛酸硫酸酯酶活性的缺失,确诊了该疾病。她还存在一种明显平衡的相互染色体易位46XX,t(X:5),X染色体的断点位于q26和q27之间。系谱分析以及母亲的成纤维细胞、血清和发根中正常的艾杜糖醛酸硫酸酯酶活性表明,患病儿童代表一个新的突变。由于父母的核型正常,似乎这种易位破坏了艾杜糖醛酸硫酸酯酶基因本身,从而首次将该基因定位到Xq26 - 27。女孩身上出现的严重临床特征,可能是由非随机X染色体失活所解释的。