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Exon 9 mutations in the WT1 gene, without influencing KTS splice isoforms, are also responsible for Frasier syndrome
Author(s) -
Kohsaka Takao,
Tagawa Manabu,
Takekoshi Yasuro,
Yanagisawa Hiroko,
Tadokoro Keiko,
Yamada Masao
Publication year - 1999
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/(sici)1098-1004(199912)14:6<466::aid-humu4>3.0.co;2-6
Subject(s) - exon , biology , intron , genetics , point mutation , gene , gene isoform , splice , rna splicing , mutation , alternative splicing , splice site mutation , rna
We report new mutations in exon 9 of the WT1 gene that did not alter the ratio of +/– KTS splice isoforms in two unrelated patients with Frasier syndrome (FS). The mutation of intron 9 inducing defective alternative splicing was reported to be responsible for this syndrome. The mutations found in our cases occurred in the same exon of the WT1 gene as detected in Denys‐Drash syndrome (DDS) and could not be explained by the previously proposed mechanism. The results suggest that the two syndromes originate from the same WT1 gene abnormality. From a molecular biological point of view, we concluded that the two diseases were not separable, and that FS should be included as an atypical form of DDS. Hum Mutat 14:466–470, 1999. © 1999 Wiley‐Liss, Inc.