Zhonghua xin xue guan bing za zhi · 2006
[Alpha-galactosidase A gene mutation in a Chinese family with Fabry disease mimicking clinical features of hypertrophic cardiomyopathy].
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Liu He-jun, Cao Ke-jiang, Li Cheng-rang, Dai Jian, Ma Ji-zheng, Yong Yong-hong, Sun Wei
Аннотация
OBJECTIVE: To screen gene mutation in alpha-galactosidase A (alpha-Gal A) in a nonconsanguineous Chinese family with Fabry disease (FD) with clinical manifestations similar to hypertrophic cardiomyopathy (HCM).
METHODS: Mutation analysis was performed by using purified PCR products to direct sequence analysis on an ABI-377XL automated DNA sequencer. DNA analysis of alpha-Gal A gene and physical and clinical examinations were performed in a female proband and in her relatives (15 subjects in total).
RESULTS: Three hemizygotes and 6 heterozygotes were diagnosed for FD by the alpha-Gal A gene analysis with a missense mutation in exon 5 of the alpha-Gal A sequence, leading to a TGG32TGA substitution, which may induce the absent of tryptophan's translation (corresponded to TGG) by the terminator codon TGA. Six patients in the family were revealed as HCM by echocardiography.
CONCLUSIONS: Present results show that it is important to differentiate FD from other causes of hypertrophy in patients with cardiac hypertrophy. Screening for alpha-Gal A gene mutations in patients with FD and in their relatives could help to identify all suspected cases within the families.
METHODS: Mutation analysis was performed by using purified PCR products to direct sequence analysis on an ABI-377XL automated DNA sequencer. DNA analysis of alpha-Gal A gene and physical and clinical examinations were performed in a female proband and in her relatives (15 subjects in total).
RESULTS: Three hemizygotes and 6 heterozygotes were diagnosed for FD by the alpha-Gal A gene analysis with a missense mutation in exon 5 of the alpha-Gal A sequence, leading to a TGG32TGA substitution, which may induce the absent of tryptophan's translation (corresponded to TGG) by the terminator codon TGA. Six patients in the family were revealed as HCM by echocardiography.
CONCLUSIONS: Present results show that it is important to differentiate FD from other causes of hypertrophy in patients with cardiac hypertrophy. Screening for alpha-Gal A gene mutations in patients with FD and in their relatives could help to identify all suspected cases within the families.