LitCoin_Mondo_095  

PubMed:1353340 / 159-187 JSONTXT 14 Projects

Late-onset metachromatic leukodystrophy: molecular pathology in two siblings. We report on a new allele at the arylsulfatase A (ARSA) locus causing late-onset metachromatic leukodystrophy (MLD). In that allele arginine84, a residue that is highly conserved in the arylsulfatase gene family, is replaced by glutamine. In contrast to alleles that cause early-onset MLD, the arginine84 to glutamine substitution is associated with some residual ARSA activity. A comparison of genotypes, ARSA activities, and clinical data on 4 individuals carrying the allele of 81 patients with MLD examined, further validates the concept that different degrees of residual ARSA activity are the basis of phenotypical variation in MLD.

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last updated at 2021-12-22 07:13:19 UTC

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