title: PTPN2 but not PTPN22 is associated with Crohn's disease in a New Zealand population.
abstract: Recent genome-wide association studies have provided evidence for the involvement of the genes PTPN2 and PTPN22 in the pathogenesis of Crohn's disease (CD). We investigated whether genetic variants in these genes were associated with CD in a New Zealand population. Single-nucleotide polymorphisms (SNPs) rs2542151 (PTPN2) and rs2476601 (PTPN22) were genotyped in 315 CD cases and 481 controls. In this sample, we were able to confirm an association between CD and PTPN2 (genotypic P = 0.019 and allelic P = 0.011), and phenotypic analysis showed an association of this SNP with late age at first diagnosis, inflammatory and penetrating CD behaviour, requirement of bowel resection and being a smoker at diagnosis. There was no evidence for an association with PTPN22.
authors.affiliation: Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand. ang.morgan@auckland.ac.nz
authors.forename: A R
authors.initials: AR
authors.lastname: Morgan
authors.forename: D Y
authors.initials: DY
authors.lastname: Han
authors.forename: C
authors.initials: C
authors.lastname: Huebner
authors.forename: W J
authors.initials: WJ
authors.lastname: Lam
authors.forename: A G
authors.initials: AG
authors.lastname: Fraser
authors.forename: L R
authors.initials: LR
authors.lastname: Ferguson
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D003424:Crohn Disease / Q000201:enzymology* / Q000235:genetics* / Q000276:immunology; D005260:Female; D020022:Genetic Predisposition to Disease; D055106:Genome-Wide Association Study; D006801:Humans; D008297:Male; D008875:Middle Aged; D009520:New Zealand; D020641:Polymorphism, Single Nucleotide; D054578:Protein Tyrosine Phosphatase, Non-Receptor Type 2 / Q000235:genetics* / Q000276:immunology; D054596:Protein Tyrosine Phosphatase, Non-Receptor Type 22 / Q000235:genetics* / Q000276:immunology; D055815:Young Adult
chemical_list: C516649:PTPN2 protein, human; C516765:PTPN22 protein, human; D054578:Protein Tyrosine Phosphatase, Non-Receptor Type 2; D054596:Protein Tyrosine Phosphatase, Non-Receptor Type 22