[Analysis of MYH3 gene variation and prenatal diagnosis for two pedigrees affected with congenital arthrogryposis].

OBJECTIVE:To explore the genetic etiology of two pedigrees affected with congenital arthrogryposis. METHODS:Whole exome sequencing (WES) was used to screen potential variations in the proband. Suspected variations were analyzed with bioinformatics software and validated by Sanger sequencing. RESULTS:A heterozygous c.1123G>A (p.Glu375Lys) variation was detected in the proband and an affected fetus from pedigree 1, while a de novo heterozygous c.118 G>A (p.Val40Met) variation was detected in an affected fetus from pedigree 2. CONCLUSION:The two heterozygous variations of the MYH3 gene probably underlie the disease in the pedigrees. Above results have facilitated genetic counseling and prenatal diagnosis.

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