ArticleEuropean journal of human genetics : EJHG2025
RNA-sequencing unveils FLT4 splice site variants in variable congenital heart disease.
Article in European journal of human genetics : EJHG, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.
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Corrections and comments
- Erratum issued
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14 authors.
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Abstract
The etiology of congenital heart disease (CHD) is complex, comprising both genetic and environmental factors. Despite documented familial occurrences, the genetic etiology remains largely elusive. Trio exome sequencing identified a heterozygous FLT4 splice site variant in two families with respectively tetralogy of Fallot (TOF), and variable CHD comprising both the TOF spectrum and aortic coarctation. In the first family, Sanger sequencing on cDNA confirmed aberrant splicing for the c.985+1G > A variant. In the second family, transcriptome sequencing uncovered altered splicing for the c.1657+6T > C variant, despite normal targeted Sanger sequencing. In conclusion, our study establishes FLT4 splice site variants as a molecular cause of both left and right-sided isolated CHD, with incomplete penetrance. RNA-sequencing emerges as a valuable technique in unraveling the missing inheritability of CHD.
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