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Human Genetics of Defects of Situs

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Date 2024 Jun 17
PMID 38884744
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Abstract

Defects of situs are associated with complex sets of congenital heart defects in which the normal concordance of asymmetric thoracic and abdominal organs is disturbed. The cellular and molecular mechanisms underlying the formation of the embryonic left-right axis have been investigated extensively in the past decade. This has led to the identification of mutations in at least 33 different genes in humans with heterotaxy and situs defects. Those mutations affect a broad range of molecular components, from transcription factors, signaling molecules, and chromatin modifiers to ciliary proteins. A substantial overlap of these genes is observed with genes associated with other congenital heart diseases such as tetralogy of Fallot and double-outlet right ventricle, d-transposition of the great arteries, and atrioventricular septal defects. In this chapter, we present the broad genetic heterogeneity of situs defects including recent human genomics efforts.

References
1.
Sutherland M, Ware S . Disorders of left-right asymmetry: heterotaxy and situs inversus. Am J Med Genet C Semin Med Genet. 2009; 151C(4):307-17. DOI: 10.1002/ajmg.c.30228. View

2.
Oyen N, Poulsen G, Boyd H, Wohlfahrt J, Jensen P, Melbye M . Recurrence of congenital heart defects in families. Circulation. 2009; 120(4):295-301. DOI: 10.1161/CIRCULATIONAHA.109.857987. View

3.
Fahed A, Gelb B, Seidman J, Seidman C . Genetics of congenital heart disease: the glass half empty. Circ Res. 2013; 112(4):707-20. PMC: 3827691. DOI: 10.1161/CIRCRESAHA.112.300853. View

4.
Pollex R, Hegele R . Copy number variation in the human genome and its implications for cardiovascular disease. Circulation. 2007; 115(24):3130-8. DOI: 10.1161/CIRCULATIONAHA.106.677591. View

5.
Fakhro K, Choi M, Ware S, Belmont J, Towbin J, Lifton R . Rare copy number variations in congenital heart disease patients identify unique genes in left-right patterning. Proc Natl Acad Sci U S A. 2011; 108(7):2915-20. PMC: 3041108. DOI: 10.1073/pnas.1019645108. View