The expanding clinical phenotype of germline ABL1-associated congenital heart defects and skeletal malformations syndrome.
CHDSKM
congenital heart defects
hearing impairment
renal hypoplasia
skeletal malformations
Journal
Human mutation
ISSN: 1098-1004
Titre abrégé: Hum Mutat
Pays: United States
ID NLM: 9215429
Informations de publication
Date de publication:
10 2020
10 2020
Historique:
revised:
23
06
2020
received:
04
01
2020
accepted:
02
07
2020
pubmed:
10
7
2020
medline:
1
4
2022
entrez:
10
7
2020
Statut:
ppublish
Résumé
Congenital heart defects and skeletal malformations syndrome (CHDSKM) is a rare autosomal dominant disorder characterized by congenital heart disease, skeletal abnormalities, and failure to thrive. CHDSKM is caused by germline mutations in ABL1. To date, three variants have been in association with CHDSKM. In this study, we describe three de novo missense variants, c.407C>T (p.Thr136Met), c.746C>T (p.Pro249Leu), and c.1573G>A (p.Val525Met), and one recurrent variant, c.1066G>A (p.Ala356Thr), in six patients, thereby expanding the phenotypic spectrum of CHDSKM to include hearing impairment, lipodystrophy-like features, renal hypoplasia, and distinct ocular abnormalities. Functional investigation of the three novel variants showed an increased ABL1 kinase activity. The cardiac findings in additional patients with p.Ala356Thr contribute to the accumulating evidence that patients carrying either one of the recurrent variants, p.Tyr245Cys and p.Ala356Thr, have a high incidence of cardiac abnormalities. The phenotypic expansion has implications for the clinical diagnosis of CHDSKM in patients with germline ABL1 variants.
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1738-1744Informations de copyright
© 2020 Wiley Periodicals LLC.
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