ZBTB17 loss-of-function mutation contributes to familial dilated cardiomyopathy

  • Yu-Min Sun
  • Jun Wang
  • Ying-Jia Xu
  • Xin-Hua Wang
  • Fang Yuan
  • Hua Liu
  • Ruo-Gu Li
  • Min Zhang
  • Yan-Jie Li
  • Hong-Yu Shi
  • Liang Zhao
  • Xing-Biao Qiu
  • Xin-Kai Qu
  • Yi-Qing Yang
Original Article

Abstract

Dilated cardiomyopathy (DCM) is a common primary myocardial disease leading to congestive heart failure, arrhythmia and sudden cardiac death. Increasing studies demonstrate substantial genetic determinants for DCM. Nevertheless, DCM is of substantial genetic heterogeneity, and the genetic basis for DCM in most patients remains unclear. The present study was sought to investigate the association of a genetic variant in the ZBTB17 gene with DCM. A cohort of 158 unrelated patients with idiopathic DCM and a total of 230 unrelated, ethnically matched healthy individuals used as controls were recruited. The coding exons and splicing boundaries of ZBTB17 were sequenced in all study participants. The functional effect of the mutant ZBTB17 was characterized by a dual-luciferase reporter assay system. A novel heterozygous ZBTB17 mutation, p.E243X, was discovered in an index patient. Genetic scan of the mutation carrier’s available relatives showed that the mutation was present in all affected family members but absent in unaffected family members. Analysis of the proband’s pedigree revealed that the mutation co-segregated with DCM, which was transmitted in an autosomal dominant pattern with complete penetrance. The nonsense mutation was absent in the 460 control chromosomes. Functional assays demonstrated that the truncated ZBTB17 protein had no transcriptional activity as compared with its wild-type counterpart. This study firstly associates ZBTB17 loss-of-function mutation with enhanced susceptibility to DCM in humans, which provides novel insight into the molecular mechanism underpinning DCM, implying potential implications for genetic counseling and personalized management of DCM.

Keywords

Dilated cardiomyopathy Genetics Transcription factor ZBTB17 Reporter gene assay 

Notes

Acknowledgements

The authors would like to thank the study subjects for their dedication to the study. This work was mainly funded by Grants from the National Natural Science Foundation of China (Grant numbers 81470372, 81400244 and 81370400), the Key Program for Basic Research of Shanghai, China (Grant number 14JC1405500), the Natural Science Foundation of Shanghai, China (Grant number 15ZR1438100), and the Experimental Animal Program of Shanghai, China (Grant number 16140901602).

Compliance with ethical standards

Conflict of interest

The authors have no conflict of interest to state.

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Copyright information

© Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  • Yu-Min Sun
    • 1
  • Jun Wang
    • 1
  • Ying-Jia Xu
    • 2
  • Xin-Hua Wang
    • 3
  • Fang Yuan
    • 4
  • Hua Liu
    • 5
  • Ruo-Gu Li
    • 5
  • Min Zhang
    • 5
  • Yan-Jie Li
    • 5
  • Hong-Yu Shi
    • 5
  • Liang Zhao
    • 5
  • Xing-Biao Qiu
    • 5
  • Xin-Kai Qu
    • 5
  • Yi-Qing Yang
    • 5
    • 6
    • 7
  1. 1.Department of Cardiology, Shanghai Jing’an District Central HospitalFudan UniversityShanghaiChina
  2. 2.Department of Cardiology, The Fifth People′s Hospital of ShanghaiFudan UniversityShanghaiChina
  3. 3.Department of Cardiology, School of Medicine, Renji HospitalShanghai Jiao Tong UniversityShanghaiChina
  4. 4.Department of Emergency Medicine, School of Medicine, Shanghai Tongren HospitalShanghai Jiao Tong UniversityShanghaiChina
  5. 5.Department of Cardiology, Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghaiChina
  6. 6.Department of Cardiovascular Research Laboratory, Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghaiChina
  7. 7.Department of Central Laboratory, Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghaiChina

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