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Ozkinay F, Emecen DA, Kose M, Isik E, Bozaci AE, Canda E, Tuysuz B, Zubarioglu T, Atik T, Onay H. Clinical and genetic features of 13 patients with mucopolysaccarhidosis type IIIB: Description of two novel NAGLU gene mutations. Mol Genet Metab Rep 2021; 27:100732. [PMID: 33747789 PMCID: PMC7966861 DOI: 10.1016/j.ymgmr.2021.100732] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 11/25/2022] Open
Abstract
Aim Mucopolysaccharidosis type III B (MPS IIIB) is an autosomal recessive lysosomal storage disease caused by mutations in the NAGLU gene which codes the lysosomal enzyme alpha-N-acetylglucosaminidase. The major symptoms of the disease are cognitive and neurological defects. In this study, the molecular spectrums of 13 MPS IIIB patients were evaluated. Material and methods Thirteen MPS IIIB patients from 11 families were included in this study. All patients were both clinically and molecularly diagnosed. NAGLU gene sequencing was performed using a next generation sequencing platform (Illumina MiSeq). Demographic, clinical and laboratory findings of the patients were obtained via the hospital records. Results Ten different mutations from the 13 MPS IIIB patients were identified. Eight of the 10 mutations were missense, one was splice site, and one large deletion was also observed. Two mutations c.509G>T (p.Gly170Val) and c.700C>G (p.Arg234Gly) have been defined for the first time in this study. Conclusion Our study expanded the mutation spectrum of the NAGLU gene thereby contributing to the improved genetic counselling of MPS IIIB patients. Confirming the literature, missense mutations were also found to be the most common NAGLU mutations in our study.
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Affiliation(s)
- F Ozkinay
- Subdivision of Pediatric Genetics, Department of Pediatrics, Faculty of Medicine, Ege University, Izmir, Turkey
| | - D A Emecen
- Subdivision of Pediatric Genetics, Department of Pediatrics, Faculty of Medicine, Ege University, Izmir, Turkey
| | - M Kose
- Subdivision of Pediatric Genetics, Department of Pediatrics, Faculty of Medicine, Ege University, Izmir, Turkey
| | - E Isik
- Subdivision of Pediatric Genetics, Department of Pediatrics, Faculty of Medicine, Ege University, Izmir, Turkey
| | - A E Bozaci
- Subdivision of Pediatric Metabolism, Department of Pediatrics, Faculty of Medicine, Ege University, Izmir, Turkey
| | - E Canda
- Subdivision of Pediatric Metabolism, Department of Pediatrics, Faculty of Medicine, Ege University, Izmir, Turkey
| | - B Tuysuz
- Subdivision of Pediatric Genetics, Department of Pediatrics, Faculty of Medicine, Cerrahpasa University, Izmir, Turkey
| | - T Zubarioglu
- Subdivision of Pediatric Metabolism, Department of Pediatrics, Faculty of Medicine, Cerrahpasa University, Izmir, Turkey
| | - T Atik
- Subdivision of Pediatric Genetics, Department of Pediatrics, Faculty of Medicine, Ege University, Izmir, Turkey
| | - H Onay
- Department of Medical Genetics, Faculty of Medicine, Ege University, Izmir, Turkey
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Kiykim E, Aktuglu-Zeybek AC, Barut K, Zubarioglu T, Cansever MS, Aydin A, Kasapcopur O. Screening for inherited metabolic disorders in patients with Familial Mediterranean Fever. Pediatr Rheumatol Online J 2015. [PMCID: PMC4599953 DOI: 10.1186/1546-0096-13-s1-p97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kiykim E, Barut K, Aktuglu-Zeybek AC, Zubarioglu T, Cansever MS, Aydin A, Kasapcopur O. Screening of free carnitine and acyl-carnitine status in patients with Familial Mediterranean Fever. Pediatr Rheumatol Online J 2015. [PMCID: PMC4599906 DOI: 10.1186/1546-0096-13-s1-p77] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kıykım E, Aktuglu-Zeybek AC, Barut K, Zubarioglu T, Cansever M, Aydin A, Kasapcopur O. AB1007 Determination of Free Carnitine and Acyl-Carnitine Status of Patients with Juvenile Idiopathic Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kiykim E, Barut K, Aktuglu-Zeybek A, Zubarioglu T, Cansever S, Aydin A, Kasapcopur O. AB1008 Screening of Free Carnitine and Acyl-Carnitine Status in Patients with Familial Mediterranean Fever. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kiykim E, Aktuglu Zeybek CA, Zubarioglu T, Aydin A. Lessons from two cases: is Fabry disease the correct diagnosis? Case Reports 2015; 2015:bcr-2014-208150. [DOI: 10.1136/bcr-2014-208150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Zeybek ACA, Kiykim E, Zubarioglu T, Cansever MS, Ceylaner S, Erkan T. CITRIN DEFICIENCY: AN INFANT INCIDENTALLY DETECTED BY PHENYLKETONURIA SCREENING WITH A NOVEL MUTATION IN SLC25A13 GENE. Genet Couns 2015; 26:409-413. [PMID: 26852511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report the first Turkish patient with citrin deficiency detected incidentally by phenylketonuria screening. Mild cholestasis, increased α-fetoprotein level, aminoacidemia including citrulline and coagulation disorder suggested citrin deficiency. Screening the SLC25A13 gene revealed compound heterozygosity harboring a novel mutation, c.851-854delGTAT (p.M285Pfs*2)/ p.I290T (c.869T>C). Progression to type II citrullinemia was considered due to hyperammonemia episodes resulting from high carbohydrate/low protein diet. High protein/low carbohydrate diet resulted in cessation of hyperammonemia episodes, reversal of hepatic dysfunction and steatohepatitis. Our report illustrates the importance of awareness on citrin deficiency.
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Kiykim E, Zubarioglu T, Gorukmez O, Gunes S, Cansever MS, Zeybek ACA. A NOVEL ASPARTYLGLUCOSAMINURIA MUTATION IN A PATIENT WITH CO-EXISTENCE OF GAUCHER DISEASE. Genet Couns 2015; 26:463-466. [PMID: 26852520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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