Chinese Journal of Evidence-Based Pediatrics ›› 2019, Vol. 14 ›› Issue (4): 303-307.DOI: 10.3969/j.issn.1673-5501.2019.04.012

• Original Papers • Previous Articles     Next Articles

Restrictive dermopathy caused by a mutation in ZMPSTE24 gene: a case report and genotype-phenotype correlation analysis

ZHAO De-xiong1,3, WANG Qing2,3, PENG Xiao-min2, HAI Yu-ting1, MA Li-gang1,WANG Yue2, WANG Sheng-lan1, WANG Hui-jun2, WU Bing-bing2   

  1. 1 Department of Obstetrics,Qinghai Red Cross Hospital,Xining 810000,China;
    2 Children's Hospital of Fudan University, Shanghai Key Laboratory of Birth Defects, Shanghai 201102, China;
    3 Co-first author
  • Received:2019-08-01 Revised:2019-08-23 Online:2019-08-25 Published:2019-08-25
  • Contact: WANG Hui-jun, E-mail: huijunwang@fudan.edu.cn; WU Bing-bing, E-mail: bingbingwu2010@163.com

Abstract: Objective To summarize the clinical features and the characteristics of a mutation in ZMPSTE24 gene in a stillborn fetus with restrictive dermopathy (RD), and to provide evidence for prenatal counseling.Methods We analyzed the clinical and genetic data of the stillborn fetus with RD. According to HGMD and PubMed,literature on clinical symptoms of the diseases caused by ZMPSTE24 mutation was reviewed.Results The neonate panel sequencing combined Sanger sequencing in proband and parents confirmed a homozygous frameshift mutation in ZMPSTE24 gene (c.1085dupT,p.Leu362PhefsTer19), which has been reported as a disease-causing mutation of RD and the hotspot mutation with high frequency up to 57.14%. Searching from HGMD and PubMed with "ZMPSTE24", and 32 disease-causing mutations were found to be related to 4 types of diseases. Up to July 2019, a total of 63 cases that caused by ZMPSTE24 mutations were retrieved in PubMed while there is no domestic report in Wanfang and CNKI database. The 49 cases of RD were summarized in this article. The severity of diseases caused by the mutation in ZMPSTE24 gene has a high correlation with the activity of zinc metalloprotease and the accumulation of prelamin A.Conclusion Leu362PhefsTer19 detected in this stillborn neonate is a hotspot mutation in ZMPSTE24 gene. The genotype of ZMPSTE24 gene is closely related to the phenotype. This article suggests that abnormal fetal development may consider the possibility of RD. The genetic test provides the basis not only for accurate diagnosis of RD but also for the appropriate intervention and family genetic counseling.

Key words: ZMPSTE24 gene, Restrictive dermopathy, Enzymatic activity, Genotype, Phenotype