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Title: [Identification of a novel mutation of the SEDL gene in X-linked spondyloepiphyseal dysplasia tarda]. Author: Lu JF, Ma HW, Jiang J, Niu GH, Liu XM. Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2004 Aug; 21(4):309-11. PubMed ID: 15300622. Abstract: OBJECTIVE: To investigate further the genetic basis of hereditary X-linked spondyloepiphyseal dysplasia tarda (SEDL). METHODS: Single strand conformation polymorphism (SSCP) combined with polymerase chain reaction and denaturing polyacrylamide gel electrophoresis were used to detect the mutation for the coding exons of SEDL gene as well as their exon/intron boundaries in 5 unrelated Chinese boys clinically diagnosed as having SEDL. DNA sequencing analysis was further used to identify the mutation. RESULTS: The 13 bp deletion mutation consisting of IVS5-2-1delAG and 322-332del TTTTCAATGAA was identified in one of SEDL patients, but not detected in 30 chromosomes from 30 unrelated normal male individuals. CONCLUSION: This is a novel mutation cosegregated with the patient's skeletal disease. The intragenic deletion occurred in the acceptor splice site of the 3' region of intron 5 and the 5' coding region of exon 6, which may result in one or a combination of splicing defects. The results of this study expand the spectrum of SEDL mutations associated with SEDL, and this will help to elucidate further the role of this novel protein in the etiology of this form of osteochondrodysplasia.[Abstract] [Full Text] [Related] [New Search]