title: Angiotensin-converting enzyme insertion/deletion polymorphism and susceptibility to systemic sclerosis: a meta-analysis.
abstract: The purpose of this study was to examine whether the insertion (I) or deletion (D) polymorphism of the angiotensin-converting enzyme gene (ACE) is associated with susceptibility to systemic sclerosis (SSc). A meta-analysis examining the associations between the ACE I/D polymorphism and SSc was conducted in overall and European populations using 1) allelic contrast (D vs I); 2) recessive (DD vs ID + II); 3) dominant (DD + ID vs II); and 4) additive (DD vs ID vs II) models. A total of 7 studies consisting of 837 cases and 754 controls were available for meta-analysis. The meta-analysis revealed no association between the D allele and SSc in any study subjects [odds ratio (OR) = 0.956, 95% confidence interval (CI) = 0.733-1.246, P = 0.737]. Stratification by ethnicity indicated no association between the D allele of the ACE I/D polymorphism and SSc in Europeans (OR = 1.117, 95%CI = 0.776-1.607, P = 0.551). Meta-analysis using all other genetic models showed the same D allele pattern in the overall and European groups. This meta-analysis showed that the ACE I/D polymorphism was not associated with susceptibility to SSc in the study subjects and in Europeans.
authors.affiliation: Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
authors.forename: G G
authors.initials: GG
authors.lastname: Song
authors.affiliation: Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea lyhcgh@korea.ac.kr.
authors.forename: Y H
authors.initials: YH
authors.lastname: Lee
mesh_terms: D000483:Alleles; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006801:Humans; D054643:INDEL Mutation; D016017:Odds Ratio; D007703:Peptidyl-Dipeptidase A / Q000235:genetics*; D011110:Polymorphism, Genetic; D044469:Racial Groups / Q000235:genetics; D012595:Scleroderma, Systemic / Q000235:genetics*
chemical_list: D007703:Peptidyl-Dipeptidase A