[Clinical and genetic analysis of a neonate with Cornelia de Lange syndrome 5 caused by HDAC8 gene mutation].

To explore the genetic cause of a neonate with congenital dysplasia, growth retardation through clinical evaluation, laboratory tests and next generation sequencing (NGS).Peripheral blood samples were obtained from the child and his parents. Whole genomic DNA was extracted and subjected to NGS. Suspected mutation was predicted by bioinformatic tools and validated by Sanger sequencing.The child was found to carry a c.556G>A (p.E186K) mutation of the HDAC8 gene on the X chromosome, which was predicted to be pathogenic by Bioinformatic analysis.The patient was diagnosed as Cornelia de Lange syndrome 5 caused by the c.556G>A mutation of the HDAC8 gene.