X-linked Adrenoleukodystrophy: Molecular and functional analysis of the ABCD1 gene in Argentinean patients

CYNTIA ANABEL AMOROSI ; HELENA MYSKÓVA; MARIELA ROXANA MONTI; CARLOS ENRIQUE ARGARAÑA; MASASHI MORITA; STEPHAN KEMP; RAQUEL DODELSON DE KREMER; LENKA DVORÁKOVÁ; ANA MARÍA OLLER DE RAMÍREZ

PUBLIC LIBRARY SCIENCE

Lugar: San Francisco; Año: 2012 vol. 7 p. 1 - 1

-linked adrenoleukodystrophy (X-ALD) is an inherited disease associated with mutations in ABCD1 gene, located on Xq28. It is characterized by increased concentration of very long chain fatty acids (VLCFAs) in plasma and in adrenal, testicular and nervous tissues, due to a failure in peroxisomal -oxidation. Clinical heterogeneity varies from presymptomatic individuals to rapidly progressive cerebral ALD forms. A total of 44 individuals from 10 unrelated X-ALD Argentinean pedigrees were involved in this study. We examined the ABCD1 gene in 28 patients including carriers by sequencing of genomic PCR products. In 10 families there were 9 different mutations, eight of which were novel. The new changes found were verified by a combination of methods: bioinformatics programs and functional analysis. The spectrum of mutations consists of 3 frameshift, an insertion (p.Arg285fs*16), a deletion (p.Thr254Argfs*82) and a duplication (p.Glu380Argfs*21); a deletion (p.Ser572_Asp575del), a sp