Improved molecular diagnosis of patients with neonatal diabetes using a combined next-generation sequencing and MS-MLPA approach
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Gorka Alkorta-Aranburu
, Madina Sukhanova , David Carmody , Trevor Hoffman , Latrice Wysinger , Jennifer Keller-Ramey , Zejuan Li , Amy Knight Johnson , Frances Kobiernicki , Shaun Botes , Carrie Fitzpatrick , Soma Das and Daniela del Gaudio
Abstract
Background: We evaluated a methylation-specific multiplex-ligation-dependent probe amplification (MS-MLPA) assay for the molecular diagnosis of transient neonatal diabetes mellitus (TNDM) caused by 6q24 abnormalities and assessed the clinical utility of using this assay in combination with next generation sequencing (NGS) analysis for diagnosing patients with neonatal diabetes (NDM).
Methods: We performed MS-MLPA in 18 control samples and 42 retrospective NDM cases with normal bi-parental inheritance of chromosome 6. Next, we evaluated 22 prospective patients by combining NGS analysis of 11 NDM genes and the MS-MLPA assay.
Results: 6q24 aberrations were identified in all controls and in 19% of patients with normal bi-parental inheritance of chromosome 6. The MS-MLPA/NGS combined approach identified a genetic cause in ~64% of patients with NDM of unknown etiology.
Conclusions: MS-MLPA is a reliable method to identify all known 6q24 abnormalities and comprehensive testing of all causes reveals a causal mutation in ~64% of patients.
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©2016 by De Gruyter
Articles in the same Issue
- Frontmatter
- Review
- Resistance to thyroid hormone α, revelation of basic study to clinical consequences
- Original Articles
- Improved molecular diagnosis of patients with neonatal diabetes using a combined next-generation sequencing and MS-MLPA approach
- Safety and metabolic impact of Ramadan fasting in children and adolescents with type 1 diabetes
- Waist-to-height ratio as a marker of low-grade inflammation in obese children and adolescents
- Classification and clinical characterization of metabolically “healthy” obese children and adolescents
- Long-term BH4 (sapropterin) treatment of children with hyperphenylalaninemia – effect on median Phe/Tyr ratios
- Compound heterozygous mutations (p.T561M and c.2422delT) in the TPO gene associated with congenital hypothyroidism
- Prevalence and clinical features of polycystic ovarian syndrome in adolescents with previous childhood growth hormone deficiency
- Urate crystals deposition in the feet of overweight juveniles and those with symptomatic hyperuricemia: a dual-energy CT study
- A novel ALMS1 homozygous mutation in two Turkish brothers with Alström syndrome
- Novel AVPR2 mutation causing partial nephrogenic diabetes insipidus in a Japanese family
- Pituitary gigantism: a retrospective case series
- Case Reports
- A novel OTX2 gene frameshift mutation in a child with microphthalmia, ectopic pituitary and growth hormone deficiency
- A novel nonsense mutation in the WFS1 gene causes the Wolfram syndrome
- A 33-year-old male patient with paternal derived duplication of 14q11.2–14q22.1~22.3: clinical course, phenotypic and genotypic findings
- Familial Turner syndrome: the importance of information
- De novo mutation of PHEX in a type 1 diabetes patient
- Congenital hypothyroidism and thyroid dyshormonogenesis: a case report of siblings with a newly identified mutation in thyroperoxidase
Articles in the same Issue
- Frontmatter
- Review
- Resistance to thyroid hormone α, revelation of basic study to clinical consequences
- Original Articles
- Improved molecular diagnosis of patients with neonatal diabetes using a combined next-generation sequencing and MS-MLPA approach
- Safety and metabolic impact of Ramadan fasting in children and adolescents with type 1 diabetes
- Waist-to-height ratio as a marker of low-grade inflammation in obese children and adolescents
- Classification and clinical characterization of metabolically “healthy” obese children and adolescents
- Long-term BH4 (sapropterin) treatment of children with hyperphenylalaninemia – effect on median Phe/Tyr ratios
- Compound heterozygous mutations (p.T561M and c.2422delT) in the TPO gene associated with congenital hypothyroidism
- Prevalence and clinical features of polycystic ovarian syndrome in adolescents with previous childhood growth hormone deficiency
- Urate crystals deposition in the feet of overweight juveniles and those with symptomatic hyperuricemia: a dual-energy CT study
- A novel ALMS1 homozygous mutation in two Turkish brothers with Alström syndrome
- Novel AVPR2 mutation causing partial nephrogenic diabetes insipidus in a Japanese family
- Pituitary gigantism: a retrospective case series
- Case Reports
- A novel OTX2 gene frameshift mutation in a child with microphthalmia, ectopic pituitary and growth hormone deficiency
- A novel nonsense mutation in the WFS1 gene causes the Wolfram syndrome
- A 33-year-old male patient with paternal derived duplication of 14q11.2–14q22.1~22.3: clinical course, phenotypic and genotypic findings
- Familial Turner syndrome: the importance of information
- De novo mutation of PHEX in a type 1 diabetes patient
- Congenital hypothyroidism and thyroid dyshormonogenesis: a case report of siblings with a newly identified mutation in thyroperoxidase