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Molecular Analysis of Vietnamese Patients With Mucopolysaccharidosis Type I

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source: Life (Basel, Switzerland)

year: 2021

authors: Can NTB,Tran DM,Bui TP,Nguyen KN,Nguyen HH,Nguyen TV,Hwu WL,Tomatsu S,Vu DC

summary/abstract:

Mucopolysaccharidosis type I (MPS I) is a rare autosomal recessive disorder caused by deleterious mutations in the α-L-iduronidase () gene. Until now, MPS I in Vietnamese has been poorly addressed. Five MPS I patients were studied with direct DNA sequencing using Illumina technology confirming pathogenic variants in the gene. Clinical characteristics, additional laboratory results, and family history were collected. All patients have presented with the classical characteristic of MPS I, and α-L-iduronidase activity was low with the accumulation of glycosaminoglycans. Three variants in the gene (c.1190-10C>A (Intronic), c.1046A>G (p.Asp349Gly), c.1862G>C (p.Arg621Pro) were identified. The c.1190-10C>A variant represents six of the ten disease alleles, indicating a founder effect for MPS I in the Vietnamese population. Using biochemical and genetic analyses, the precise incidence of MPS I in this population should accelerate early diagnosis, newborn screening, prognosis, and optimal treatment.

organization: Vietnam National Children's Hospital, 18/879 Lathanh, Dongda, Hanoi 100000, Vietnam.

DOI: 10.3390/life11111162

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