CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic Review

Lethal congenital contracture syndrome type 7 (LCCS7) and congenital hypomyelinating neuropathy type 3 (CHN3) are rare autosomal recessive diseases, characterized by severe neonatal hypotonia, polyhydramnios, arthrogryposis, facial diplegia, and severe motor paralysis, leading to death in early infa...

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Main Authors: Sandra Sabbagh, Stephanie Antoun, André Mégarbané
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Case Reports in Medicine
Online Access:http://dx.doi.org/10.1155/2020/8795607
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author Sandra Sabbagh
Stephanie Antoun
André Mégarbané
author_facet Sandra Sabbagh
Stephanie Antoun
André Mégarbané
author_sort Sandra Sabbagh
collection DOAJ
description Lethal congenital contracture syndrome type 7 (LCCS7) and congenital hypomyelinating neuropathy type 3 (CHN3) are rare autosomal recessive diseases, characterized by severe neonatal hypotonia, polyhydramnios, arthrogryposis, facial diplegia, and severe motor paralysis, leading to death in early infancy. They are related to mutations in the CNTNAP1 (contactin associated protein 1) gene, playing an important role in myelination. Recent studies have shown that both diseases could present with a wide phenotypic spectrum, with promising survival up to early childhood. We report on a 7-year-old boy from a nonconsanguineous Lebanese family presenting with neonatal hypotonia, respiratory distress, and arthrogryposis. Molecular analysis revealed the presence of a pathogenic variant in the CNTNAP1 gene leading to a premature stop codon: NM_003632.2:c.3361C>T p.(Arg1121∗). A review of the literature is discussed.
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spelling doaj-art-c573c713c4c34523901234dd20ad51102025-02-03T06:43:41ZengWileyCase Reports in Medicine1687-96271687-96352020-01-01202010.1155/2020/87956078795607CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic ReviewSandra Sabbagh0Stephanie Antoun1André Mégarbané2Pediatrics Department, Hôtel-Dieu de France, Beirut, LebanonPediatrics Department, Hôtel-Dieu de France, Beirut, LebanonSchool of Medicine, Lebanese University, Beirut, LebanonLethal congenital contracture syndrome type 7 (LCCS7) and congenital hypomyelinating neuropathy type 3 (CHN3) are rare autosomal recessive diseases, characterized by severe neonatal hypotonia, polyhydramnios, arthrogryposis, facial diplegia, and severe motor paralysis, leading to death in early infancy. They are related to mutations in the CNTNAP1 (contactin associated protein 1) gene, playing an important role in myelination. Recent studies have shown that both diseases could present with a wide phenotypic spectrum, with promising survival up to early childhood. We report on a 7-year-old boy from a nonconsanguineous Lebanese family presenting with neonatal hypotonia, respiratory distress, and arthrogryposis. Molecular analysis revealed the presence of a pathogenic variant in the CNTNAP1 gene leading to a premature stop codon: NM_003632.2:c.3361C>T p.(Arg1121∗). A review of the literature is discussed.http://dx.doi.org/10.1155/2020/8795607
spellingShingle Sandra Sabbagh
Stephanie Antoun
André Mégarbané
CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic Review
Case Reports in Medicine
title CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic Review
title_full CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic Review
title_fullStr CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic Review
title_full_unstemmed CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic Review
title_short CNTNAP1 Mutations and Their Clinical Presentations: New Case Report and Systematic Review
title_sort cntnap1 mutations and their clinical presentations new case report and systematic review
url http://dx.doi.org/10.1155/2020/8795607
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