title: Two novel mutations of the MYBPC3 gene identified in Chinese families with hypertrophic cardiomyopathy.
abstract: BACKGROUND
  Hypertrophic cardiomyopathy (HCM) is one of the most common genetic cardiovascular disorders. Mutations in the MYBPC3 gene are one of the most frequent genetic causes of HCM.
  
  
  OBJECTIVE
  To screen MYBPC3 gene mutations in Chinese patients with HCM, and analyze the correlation between the genotype and the phenotype.
  
  
  METHODS
  The 35 exons of the MYBPC3 gene were amplified by polymerase chain reaction in the 11 consecutive unrelated Chinese pedigrees. The sequences of the products were analyzed and the mutation sites were determined. The clinical data of genotype-positive families were collected, and the correlation between genotype and phenotype was analyzed.
  
  
  RESULTS
  Two mutations of the MYBPC3 gene were confirmed among 11 pedigrees. A frameshift mutation (Pro459fs) was identified in exon 17 in family H8, and a splice mutation (IVS5+5G−>C) was identified in intron 5 in family H3. These two mutations were first identified in Chinese patients with familial HCM and were absent in 110 chromosomes of healthy controls. Seven known polymorphisms were found in the cohort.
  
  
  CONCLUSIONS
  Compared with what was reported abroad, the MYBPC3 gene is a common pathogenic gene responsible for HCM in Chinese patients, and the phenotypes of these two mutations in their respective families may have their own clinical characteristics.
authors.affiliation: Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Lin
authors.forename: Dong-Dong
authors.initials: DD
authors.lastname: Zheng
authors.forename: Qin
authors.initials: Q
authors.lastname: Tao
authors.forename: Jun-Hua
authors.initials: JH
authors.lastname: Yang
authors.forename: Wen-Ping
authors.initials: WP
authors.lastname: Jiang
authors.forename: Xiang-Jun
authors.initials: XJ
authors.lastname: Yang
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Song
authors.forename: Ting-Bo
authors.initials: TB
authors.lastname: Jiang
authors.forename: Xun
authors.initials: X
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D002312:Cardiomyopathy, Hypertrophic / Q000235:genetics*; D002352:Carrier Proteins / Q000235:genetics*; D002681:China; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D016133:Polymerase Chain Reaction; D000099163:Myosin Binding Protein C
chemical_list: D002352:Carrier Proteins; D000099163:Myosin Binding Protein C