Frontiers in Genetics (Aug 2022)

Case Report: Novel compound heterozygous variants in CHRNA1 gene leading to lethal multiple pterygium syndrome: A case report

  • Jianlong Zhuang,
  • Junyu Wang,
  • Qi Luo,
  • Shuhong Zeng,
  • Yu’e Chen,
  • Yuying Jiang,
  • Xinying Chen,
  • Yuanbai Wang,
  • Yingjun Xie,
  • Yingjun Xie,
  • Gaoxiong Wang,
  • Chunnuan Chen

DOI
https://doi.org/10.3389/fgene.2022.964098
Journal volume & issue
Vol. 13

Abstract

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Background: Lethal multiple pterygium syndrome (LMPS) is a rare autosomal recessive inherited disorder typically characterized by intrauterine growth retardation, multiple pterygia, and flexion contractures.Case presentation: We herein report a Chinese case with a history of three adverse pregnancies demonstrating the same ultrasonic phenotypes, including increased nuchal translucency, edema, fetal neck cystoma, reduced movement, joint contractures, and other congenital features. Whole-exome sequencing (WES) revealed novel compound heterozygous variants in the CHRNA1 gene NM_000079.4: c.[1128delG (p.Pro377LeufsTer10)]; [505T>C (p.Trp169Arg)] in the recruited individual, and subsequent familial segregation showed that both parents transmitted their respective mutation.Conclusion: For the first time, we identified an association between the CHRNA1 gene and the recurrent lethal multiple pterygium syndrome (LMPS) in a Chinese family. This finding may also enrich the mutation spectrum of the CHRNA1 gene and promote the applications of WES technology in etiologic diagnosis of ultrasound anomalies in prenatal examination.

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