Chinese Journal of Evidence-Based Pediatrics ›› 2021, Vol. 16 ›› Issue (2): 136-140.DOI: 10.3969/j.issn.1673-5501.2021.02.011

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14 cases of Kabuki syndrome caused by KMT2D gene mutation in neonates: A case series report and literature review

CHEN Xiaoqing1,4, HU Liyuan1,4, WANG Laishuan1, CHENG Guoqiang1, CAO Yun1, CHEN Chao1, WANG Huijun3, ZHOU Wenhao1, YANG Lin2   

  1. Children's Hospital of Fudan University, Shanghai 201102, China;1 Department of Neonatology, 2 Department of Endocrinology, Genetics and Metabolism, 3 Center of Molecular Biology, 4 Co-first author
  • Received:2021-01-11 Revised:2021-04-14 Online:2021-04-25 Published:2021-06-04
  • Contact: ZHOU Wenhao, email: zhouwenhao@fudan.edu.cn;YANG Lin, email: yanglin_fudan@163.com

Abstract: Background Kabuki syndrome (KS) is a rare multi-deformities syndrome with major clinical manifestations such as facial abnormalities, skeletal abnormalities and mental retardation. Seventy-five percent of KS is caused by KMT2D gene pathogenic variation. According to current diagnostic criteria of KS, it is difficult to make diagnosis of KS in the neonatal period of patients.Objective To propose the genetic screening indications of KS in neonatal period caused by KMT2D gene mutation.DesignCase series report.Methods We extracted clinical characteristics from patients, who were diagnosed with KS caused by KMT2D gene pathogenic variation in Children's Hospital of Fudan University and relevant literature reported from 2010 to 2020.Main outcome measures Mutation sites of KMT2D gene and clinical characteristics of patients in neonatal period.Results According to 455 cases of KS newborns caused by KMT2D gene mutation (14 cases from CHFU, 441 cases from literature), the neonatal genetic screening indications included dystonia, skeletal abnormalities, feeding difficulties, cardiac abnormalities, hypoglycemia and hearing abnormalities.Conclusion The phenotypic spectrum of children with KS caused by KMT2D mutation is different between neonates and children, and genetic screening indications of neonates should be established.

Key words: KMT2D gene, Kabuki syndrome, Neonate