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X‐linked spondyloepiphyseal dysplasia tarda: Novel and recurrent mutations in 13 European families
Author(s) -
Fiedler Jörg,
Merrer Martine Le,
Mortier Geert,
Heuertz Solange,
Faivre Laurence,
Brenner Rolf E.
Publication year - 2004
Publication title -
human mutation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.981
H-Index - 162
eISSN - 1098-1004
pISSN - 1059-7794
DOI - 10.1002/humu.9254
Subject(s) - biology , genetics , mutation , gene
X‐linked spondyloepiphyseal dysplasia tarda is a skeletal dysplasia mainly affecting the vertebrae and epiphyses and commonly associated with the early development of degenerative joint disease. Radiographically the disorder is characterized by a typical hump‐shaped deformity of the vertebral bodies. SEDT is caused by mutations in SEDL located on Xp22.12‐p22.31. To further elucidate the spectrum of underlying variations we performed a screening of all 6 exons of SEDL within 13 European SEDT families and identified 6 new (c.99delC, c.183_184delGA, c.236‐5_236‐8delATTA, c.325delT, c.345_346delTG, c.94‐?_423+?del) and 9 previously reported mutations (c.1‐?_93+?del, c.93+5G>A, c.157_158delAT, c.210G>A, c.236‐9_236‐12delTTAA, c.267_275delAAGAC, c.324‐4_324‐10delTCTTTCCinsAA). The recurrent splice site alteration c.93+5G>A (formerly described as IVS3+5G>A) was detected in 3 unrelated families. Two patients were carrying 2 changes in the allele. In one case, a novel variation in exon 4 (c.99delC) was associated with several nucleotide deletions in intron 4 (c.236‐5_236‐8delATTA), and in the second case we identified a previously reported transition c.210G>A and a novel deletion in exon 6 (c.325delT). All sequence variations identified are either deletions of complete exons or predicted to result in a premature stop codon or to lead into splicing defects and are associated with a loss of considerable parts of the sedlin protein. © 2004 Wiley‐Liss, Inc.