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Hum Mutat ; 34(1): 93-6, 2013 Jan.
Article in English | MEDLINE | ID: mdl-23033263

ABSTRACT

Fanconi anemia (FA) is a rare genetic disorder characterized by congenital malformations, progressive bone marrow failure (BMF), and susceptibility to malignancies. FA is caused by biallelic or hemizygous mutations in one of 15 known FA genes, whose products are involved in the FA/BRCA DNA damage response pathway. Here, we report on a patient with previously unknown mutations of the most recently identified FA gene, SLX4/FANCP. Whole exome sequencing (WES) revealed a nonsense mutation and an unusual splice site mutation resulting in the partial replacement of exonic with intronic bases, thereby removing a nuclear localization signal. Immunoblotting detected no residual SLX4 protein, which was consistent with abrogated interactions with XPF/ERCC1 and MUS81/EME1. This cellular finding did not result in a more severe clinical phenotype than that of previously reported FA-P patients. Our study additionally exemplifies the versatility of WES for the detection of mutations in heterogenic disorders such as FA.


Subject(s)
Exome/genetics , Fanconi Anemia/genetics , Mutation , Recombinases/genetics , Base Sequence , Codon, Nonsense , DNA Mutational Analysis , Fanconi Anemia/metabolism , Female , Humans , Immunoblotting , Molecular Sequence Data , RNA Splice Sites/genetics , Recombinases/metabolism , Young Adult
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