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Characterization of Transcriptional Repressor Gene MSX1 Variations for Possible Associations with Congenital Heart

Fei-Feng Li1,2, Ying Han3, Shuai Shi3

  • 1Genomics Research Center (one of the State-Province Key Laboratory of Biopharmaceutical Engineering, China), Harbin Medical University, Harbin, China.

Plos One
|November 12, 2015
PubMed

Insights

Genetic variations in the MSX1 gene, specifically rs3821949 and rs12532, are linked to congenital heart disease (CHD) risk in Chinese Han populations. This study investigated MSX1 and MSX2 gene variations and their association with CHD.

Area of Science:

  • Cardiovascular Genetics
  • Developmental Biology
  • Human Genetics

Background:

  • Cardiac development involves complex cell interactions and gene regulation.
  • The muscle segment homeobox (MSX) gene family is crucial for cardiac cell development.
  • Genetic variations in MSX genes and their link to congenital heart disease (CHD) phenotypes are not well understood.

Purpose of the Study:

  • To investigate potential associations between variations in the MSX1 and MSX2 genes and congenital heart disease (CHD).

Main Methods:

  • Sequencing of MSX1 and MSX2 genes in 300 Chinese Han patients with CHD and 400 healthy controls.
  • Statistical analysis using Chi-Square Tests and Hardy-Weinberg equilibrium testing.

Main Results:

  • Six variations in MSX2 showed very low genetic heterozygosity.
  • Two variations in MSX1, rs3821949 (near 5'UTR) and rs12532 (within 3'UTR), exhibited high genetic heterozygosity.
  • rs3821949 and rs12532 were statistically associated with an increased risk of CHD, particularly ventricular septal defects (VSD).

Conclusions:

  • Single nucleotide polymorphisms (SNPs) rs3821949 and rs12532 within the MSX1 gene are associated with congenital heart disease (CHD) in the Chinese Han population.
Abstract

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