[Whole exome sequencing analysis of 37 fetuses with cardiac abnormalities].

OBJECTIVE

To explore the genetic etiology of fetuses with congenital heart disease (CHD) through whole exome sequencing (WES).

METHODS

Thirty seven fetuses identified with CHD by prenatal ultrasonography but with negative results by chromosomal microarray analysis (CMA) at Jinhua Maternal and Child Health Care Hospital from January 2020 to June 2022 were selected as the study subjects, for whom WES was carried out.

RESULTS

WES and Sanger sequencing had detected 6 pathogenic or likely pathogenic variants, and 6 variants with unknown clinical significance. The variants had involved 15 loci within 11 genes, in addition with one copy number variation.

CONCLUSION

WES can increase the detection rate for genetic abnormalities among fetuses with CHD, which can facilitate the prenatal diagnosis, evaluation of prognosis and genetic counseling for the couples.