DNAH11 compound heterozygous variants cause heterotaxy and congenital heart disease
Open Access
- 16 June 2021
- journal article
- research article
- Published by Public Library of Science (PLoS) in PLOS ONE
- Vol. 16 (6), e0252786
- https://doi.org/10.1371/journal.pone.0252786
Abstract
Heterotaxy (HTX), a condition characterized by internal organs not being arranged as expected relative to each other and to the left-right axis, is often accompanied with congenital heart disease (CHD). The purpose was to detect the pathogenic variants in a Chinese family with HTX and CHD. A non-consanguineous Han Chinese family with HTX and CHD, and 200 unrelated healthy subjects were enlisted. Exome sequencing and Sanger sequencing were applied to identify the genetic basis of the HTX family. Compound heterozygous variants, c.3426-1G>A and c.4306C>T (p.(Arg1436Trp)), in the dynein axonemal heavy chain 11 gene (DNAH11) were identified in the proband via exome sequencing and further confirmed by Sanger sequencing. Neither c.3426-1G>A nor c.4306C>T variant in the DNAH11 gene was detected in 200 healthy controls. The DNAH11 c.3426-1G>A variant was predicted as altering the acceptor splice site and most likely affecting splicing. The DNAH11 c.4306C>T variant was predicted to be damaging, which may reduce the phenotype severity. The compound heterozygous variants, c.3426-1G>A and c.4306C>T, in the DNAH11 gene might be the pathogenic alterations resulting in HTX and CHD in this family. These findings broaden the variant spectrum of the DNAH11 gene and increase knowledge used in genetic counseling for the HTX family.Funding Information
- National Natural Science Foundation of China (81670216)
- National Natural Science Foundation of China (81873686)
- National Natural Science Foundation of China (81800219)
- Natural Science Foundation of Hunan Province (2020JJ3057)
- Natural Science Foundation of Hunan Province (2020JJ4830)
- Natural Science Foundation of Hunan Province (2019JJ50927)
- Health and Family Planning Commission of Hunan Province (B2019174)
- Hunan Provincial Innovation Foundation for Postgraduate (CX20190254)
- Special Emergency Project from Science and Technology Department of Hunan Province (2020SK3032)
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