title: The M235T polymorphism of the angiotensinogen gene in South Indian patients of hypertrophic cardiomyopathy.
abstract: BACKGROUND
  Hypertrophic cardiomyopathy (HCM) is a complex disorder and genetically transmitted cardiac disease with a diverse clinical course. The objective of the present study was to examine the association of the T704C polymorphism of exon 2 of the angiotensinogen (AGT) gene with HCM in a South Indian population from Andhra Pradesh. Subjects and methods. One-hundred and fifty HCM (90 sporadic hypertrophic cardiomyopathy [SHCM] and 60 familial hypertrophic cardiomyopathy [FHCM]) patients and 165 age- and sex-matched normal healthy controls without known hypertension and left ventricular hypertrophy were included in the study. DNA was isolated from peripheral leukocytes and the region of interest in the AGT gene bearing a missense mutation methionine to threonine substitution at codon 235 (M235T) of exon 2, was amplified by polymerase chain reaction (PCR). The PCR products were subjected to restriction digestion with the enzyme SfaNI.
  
  
  RESULTS
  Significant differences were detected in genotypic distribution (p = 0.04) as well as the allelic frequency (p = 0.003) between the SHCM patients and controls. The polymorphism did not show any association with FHCM.
  
  
  CONCLUSIONS
  Our results suggest that the T allele of the AGT gene is significantly associated with SHCM in a South Indian population from Andhra Pradesh. However, we did not find significant association of this polymorphism with FHCM.
authors.affiliation: Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad, India.
authors.lastname: Polugari Prem Kumar Manohar Rao
authors.forename: Anjana
authors.initials: A
authors.lastname: Munshi
authors.forename: Ratnam
authors.initials: R
authors.lastname: Mullapudi
authors.lastname: Potham Sampath Kumar
authors.forename: Annam
authors.initials: A
authors.lastname: Sharath
authors.lastname: Gundala Anil Krishna
authors.forename: Murlidhar
authors.initials: M
authors.lastname: Sadhnani
mesh_terms: D019943:Amino Acid Substitution / Q000235:genetics*; D000808:Angiotensinogen / Q000235:genetics*; D002312:Cardiomyopathy, Hypertrophic / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D020022:Genetic Predisposition to Disease; D060005:Genotyping Techniques; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*
chemical_list: D000808:Angiotensinogen