One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal Form
Charcot–Marie–Tooth (CMT) disease is a heterogeneous group of inherited disorders affecting the peripheral nervous system, with a prevalence of 1/2500. So far, mutations in more than 80 genes have been identified causing either demyelinating forms (CMT1) or axonal forms (CMT2). Consequentially, the...
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doaj-a06c58a4f4064c2fb0bc6a575e38454e2020-12-16T00:01:15ZengMDPI AGBrain Sciences2076-34252020-12-011098698610.3390/brainsci10120986One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal FormFederica Miressi0Corinne Magdelaine1Pascal Cintas2Sylvie Bourthoumieux3Angélique Nizou4Paco Derouault5Frédéric Favreau6Franck Sturtz7Pierre-Antoine Faye8Anne-Sophie Lia9Maintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceMaintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceCHU Toulouse, Service de Neurologie, F-31000 Toulouse, FranceMaintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceMaintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceCHU Limoges, Service de Bioinformatique, F-87000 Limoges, FranceMaintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceMaintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceMaintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceMaintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, F-87000 Limoges, FranceCharcot–Marie–Tooth (CMT) disease is a heterogeneous group of inherited disorders affecting the peripheral nervous system, with a prevalence of 1/2500. So far, mutations in more than 80 genes have been identified causing either demyelinating forms (CMT1) or axonal forms (CMT2). Consequentially, the genotype–phenotype correlation is not always easy to assess. Diagnosis could require multiple analysis before the correct causative mutation is detected. Moreover, it seems that approximately 5% of overall diagnoses for genetic diseases involves multiple genomic loci, although they are often underestimated or underreported. In particular, the combination of multiple variants is rarely described in CMT pathology and often neglected during the diagnostic process. Here, we present the complex genetic analysis of a family including two CMT cases with various severities. Interestingly, next generation sequencing (NGS) associated with Cov’Cop analysis, allowing structural variants (SV) detection, highlighted variations in <i>MORC2</i> (microrchidia family CW-type zinc-finger 2) and <i>AARS1</i> (alanyl-tRNA-synthetase) genes for one patient and an additional mutation in <i>MFN2</i> (Mitofusin 2) in the more affected patient.https://www.mdpi.com/2076-3425/10/12/986multilocus diseaseCharcot–Marie–ToothdiagnosisCNVNGS |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Federica Miressi Corinne Magdelaine Pascal Cintas Sylvie Bourthoumieux Angélique Nizou Paco Derouault Frédéric Favreau Franck Sturtz Pierre-Antoine Faye Anne-Sophie Lia |
spellingShingle |
Federica Miressi Corinne Magdelaine Pascal Cintas Sylvie Bourthoumieux Angélique Nizou Paco Derouault Frédéric Favreau Franck Sturtz Pierre-Antoine Faye Anne-Sophie Lia One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal Form Brain Sciences multilocus disease Charcot–Marie–Tooth diagnosis CNV NGS |
author_facet |
Federica Miressi Corinne Magdelaine Pascal Cintas Sylvie Bourthoumieux Angélique Nizou Paco Derouault Frédéric Favreau Franck Sturtz Pierre-Antoine Faye Anne-Sophie Lia |
author_sort |
Federica Miressi |
title |
One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal Form |
title_short |
One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal Form |
title_full |
One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal Form |
title_fullStr |
One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal Form |
title_full_unstemmed |
One Multilocus Genomic Variation Is Responsible for a Severe Charcot–Marie–Tooth Axonal Form |
title_sort |
one multilocus genomic variation is responsible for a severe charcot–marie–tooth axonal form |
publisher |
MDPI AG |
series |
Brain Sciences |
issn |
2076-3425 |
publishDate |
2020-12-01 |
description |
Charcot–Marie–Tooth (CMT) disease is a heterogeneous group of inherited disorders affecting the peripheral nervous system, with a prevalence of 1/2500. So far, mutations in more than 80 genes have been identified causing either demyelinating forms (CMT1) or axonal forms (CMT2). Consequentially, the genotype–phenotype correlation is not always easy to assess. Diagnosis could require multiple analysis before the correct causative mutation is detected. Moreover, it seems that approximately 5% of overall diagnoses for genetic diseases involves multiple genomic loci, although they are often underestimated or underreported. In particular, the combination of multiple variants is rarely described in CMT pathology and often neglected during the diagnostic process. Here, we present the complex genetic analysis of a family including two CMT cases with various severities. Interestingly, next generation sequencing (NGS) associated with Cov’Cop analysis, allowing structural variants (SV) detection, highlighted variations in <i>MORC2</i> (microrchidia family CW-type zinc-finger 2) and <i>AARS1</i> (alanyl-tRNA-synthetase) genes for one patient and an additional mutation in <i>MFN2</i> (Mitofusin 2) in the more affected patient. |
topic |
multilocus disease Charcot–Marie–Tooth diagnosis CNV NGS |
url |
https://www.mdpi.com/2076-3425/10/12/986 |
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