Mutational analysis of the GLA gene in Mexican families with Fabry disease

• Published in: Journal of genetics Vol. 96; no. 1; pp. 161 - 164
• Main Authors: GUTIÉRREZ-AMAVIZCA, BIANCA ETHEL, GAL, ANDREAS, ORTÍZ-OROZCO, ROCÍO, ORTH, ULRICH, MONTES DE OCA, ERNESTO PRADO, GUTIÉRREZ-AMAVIZCA, JAIME PAUL, FIGUERA, LUIS E.
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01.03.2017; Springer; Springer Nature B.V
• Subjects: alpha-Galactosidase - genetics; Animal Genetics and Genomics; Biomedical and Life Sciences; DNA Mutational Analysis; Enzymes; Evolutionary Biology; Fabry Disease - diagnosis; Fabry Disease - genetics; Female; Gene mutations; Genes; Genetic aspects; Genetics; Genotype; Genotype & phenotype; Humans; Life Sciences; Male; Mexico; Microbial Genetics and Genomics; Microsatellite Repeats; Mutation; Pedigree; Phenotype; Plant Genetics and Genomics; Research Note; Mexico; United States > US; Germany; Fabry disease; mutation; Mexican; gene
• ISSN: 0022-1333; 0973-7731
• DOI: 10.1007/s12041-017-0744-4

Fabry disease (FD) is a lysosomal storage disorder, which develops due to a deficiency in the hydrolytic enzyme, α-galactosidase A (α-Gal A). Alpha-Gal A hydrolyzes glycosphingolipid globotriaosylceramide (Gb3), and an α-Gal A deficiency leads to Gb3 accumulation in tissues and cells in the body. This pathology is likely to involve multiple systems, but it is generally considered to affect primarily vascular endothelium. In this study, we investigated mutations in the GLA gene, which encodes α-Gal A, in Mexican families with FD. We included seven probands with FD that carried known mutations. We analysed pedigrees of the probands, and performed molecular screening in 65 relatives with the potential of carrying a GLA mutation. Five mutations (P40S, IVS4 +4 , G328V, R363H, R404del) were detected in seven unrelated Mexican families with the classic FD phenotype. Of the 65 relatives examined, 42 (64.6%) had a GLA gene mutation. In summary, among seven Mexican probands with FD, 65 relatives were at risk of carrying a known GLA mutation, and molecular screening identified 42 individuals with the mutation. Thus, our findings showed that it is important to perform molecular analysis in families with FD to detect mutations and to provide accurate diagnoses for individuals that could be affected.