Evaluation Studies
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[Analysis of genomic copy number variations in fetuses with conotruncal defects using single nucleotide polymorphism array].

OBJECTIVE: To assess the value of single nucleotide polymorphism array (SNP array) for the study of fetuses with conotruncal defects (CTD) detected by echocardiography.

METHODS: SNP array was carried out on 75 fetuses with sonographically detected CTD but a normal karyotype. The results were analyzed with ChAS software.

RESULTS: Pathogenic CNVs were detected in 7 (9.3%) of all cases. Variant of uncertain significance (VOUS) was detected in 2 (2.7%) cases. Benign CNVs were detected in 19 (25.3%) cases.

CONCLUSION: SNP array is an effective method for delineating the etiology of fetuses with CTD, particularly for those with a normal karyotype.

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