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Sperb-Ludwig F, Alegra T, Velho RV, Ludwig N, Kim CA, Kok F, Kitajima JP, van Meel E, Kornfeld S, Burin MG, Schwartz IVD. Exome sequencing for mucolipidosis III: Detection of a novel GNPTAB gene mutation in a patient with a very mild phenotype. Mol Genet Metab Rep 2014. [PMID: 28649523 PMCID: PMC5471150 DOI: 10.1016/j.ymgmr.2014.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mucolipidosis II and III alpha/beta (ML II/III alpha/beta) are rare autosomal recessive lysosomal storage diseases that are caused by a deficiency of UDP-GlcNAc:lysosomal enzyme N-acetylglucosamine-1-phosphotransferase, the enzyme responsible for the synthesis of the mannose 6-phosphate targeting signal on lysosomal hydrolases. A Brazilian patient suspected of having a very mild ML III was investigated using whole next-generation sequencing (NGS). Two mutations in the GNPTAB gene were detected and confirmed to be in trans status by parental analysis: c.1208T>C (p.Ile403Thr), previously reported as being pathogenic, and the novel mutation c.1723G>A (p.Gly575Arg). This study demonstrates the effectiveness of using whole NGS for the molecular diagnosis of very mild ML III alpha/beta patients.
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Affiliation(s)
- F Sperb-Ludwig
- BRAIN (Basic Research and Advanced Investigations in Neurosciences) Laboratory, Hospital de Clínicas de Porto Alegre (HCPA), Brazil.,Postgraduate Program in Medical Sciences: Medical Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Brazil
| | - T Alegra
- Postgraduate Program in Genetics and Molecular Biology, UFRGS, Brazil
| | - R V Velho
- Postgraduate Program in Genetics and Molecular Biology, UFRGS, Brazil
| | - N Ludwig
- BRAIN (Basic Research and Advanced Investigations in Neurosciences) Laboratory, Hospital de Clínicas de Porto Alegre (HCPA), Brazil
| | - C A Kim
- Genetics Unit, Instituto da Criança da Faculdade de Medicina, Universidade de São Paulo, Brazil
| | - F Kok
- Mendelics Genomic Analysis, São Paulo, Brazil
| | | | - E van Meel
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, USA
| | - S Kornfeld
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, USA
| | - M G Burin
- Medical Genetics Service, HCPA, Brazil
| | - I V D Schwartz
- BRAIN (Basic Research and Advanced Investigations in Neurosciences) Laboratory, Hospital de Clínicas de Porto Alegre (HCPA), Brazil.,Postgraduate Program in Medical Sciences: Medical Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Brazil.,Postgraduate Program in Genetics and Molecular Biology, UFRGS, Brazil.,Medical Genetics Service, HCPA, Brazil.,Genetics Department, UFRGS, Brazil
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Krug B, Schwartz I, Lopes de Oliveira F, Alegra T, Campos Martins N, Todeschini L, Picon P. The Management of Gaucher Disease in Developing Countries: A Successful Experience in Southern Brazil. Public Health Genomics 2010; 13:27-33. [DOI: 10.1159/000217793] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Accepted: 02/03/2009] [Indexed: 11/19/2022] Open
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