OBJECTIVE: To analyse the relationship between the presence of auto-antibodies [rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP)], HLA-DRB1 alleles and PTPN22 1858 C/T polymorphism and test the value of their combination as susceptibility markers for rheumatoid arthritis (RA). METHODS: Patients with early arthritis were included. At entry in the cohort or during follow-up, 191 patients fulfilled the criteria for RA and 184 individuals suffered from other arthropathies. RF was measured by nephelometry and anti-CCP antibody by enzyme-linked immunosorbent assay. HLA class II alleles were determined by polymerase chain reaction. Samples were genotyped for PTPN22 1858C/T variants using a TaqMan 5'-allele discrimination assay. RESULTS: The presence of shared epitope (SE) alleles was strongly associated with anti-CCP and RF-positive RA [P = 7.05 x 10(-10), odds ratio (OR) 4.57, 95% confidence interval (CI) 2.76-7.57 and P = 1.68 x 10(-6), OR 2.99, 95% CI 1.89-4.74, respectively). The combination of the PTPN22 1858T variant and anti-CCP antibodies gave a high specificity for the disease, and was significantly associated with RA (P = 8.86 x 10(-5), OR 10.05, 95% CI 1.88-53.73). CONCLUSION: The combination of the T variant of the 1858 polymorphism of the PTPN22 gene in combination with the presence of anti-CCP antibodies, preferentially in a SE-positive individual, is associated with the development of RA.
OBJECTIVE: To analyse the relationship between the presence of auto-antibodies [rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP)], HLA-DRB1 alleles and PTPN221858 C/T polymorphism and test the value of their combination as susceptibility markers for rheumatoid arthritis (RA). METHODS:Patients with early arthritis were included. At entry in the cohort or during follow-up, 191 patients fulfilled the criteria for RA and 184 individuals suffered from other arthropathies. RF was measured by nephelometry and anti-CCP antibody by enzyme-linked immunosorbent assay. HLA class II alleles were determined by polymerase chain reaction. Samples were genotyped for PTPN221858C/T variants using a TaqMan 5'-allele discrimination assay. RESULTS: The presence of shared epitope (SE) alleles was strongly associated with anti-CCP and RF-positive RA [P = 7.05 x 10(-10), odds ratio (OR) 4.57, 95% confidence interval (CI) 2.76-7.57 and P = 1.68 x 10(-6), OR 2.99, 95% CI 1.89-4.74, respectively). The combination of the PTPN22 1858T variant and anti-CCP antibodies gave a high specificity for the disease, and was significantly associated with RA (P = 8.86 x 10(-5), OR 10.05, 95% CI 1.88-53.73). CONCLUSION: The combination of the T variant of the 1858 polymorphism of the PTPN22 gene in combination with the presence of anti-CCP antibodies, preferentially in a SE-positive individual, is associated with the development of RA.
Authors: M Maziarz; M Janer; J C Roach; W Hagopian; J P Palmer; K Deutsch; C B Sanjeevi; I Kockum; N Breslow; A Lernmark Journal: Genes Immun Date: 2010-05-06 Impact factor: 2.676
Authors: Hala M Raslan; Hanaa R Attia; Iman Salama; Mona Hamed Ibrahim; Eman Mahmoud Hassan; Mohamed S El Hussieny; Manal M El Menyawi; Khalda S Amr Journal: Rheumatol Int Date: 2016-06-20 Impact factor: 2.631
Authors: Cristina Regueiro; Laura Nuño; Ana Triguero-Martinez; Ana M Ortiz; Alejandro Villalba; María Dolores Bóveda; Ana Martínez-Feito; Carmen Conde; Alejandro Balsa; Isidoro González-Alvaro; Antonio Gonzalez Journal: Sci Rep Date: 2021-05-11 Impact factor: 4.379
Authors: Gang Xie; Yue Lu; Ye Sun; Steven Shiyang Zhang; Edward Clark Keystone; Peter K Gregersen; Robert M Plenge; Christopher I Amos; Katherine A Siminovitch Journal: Ann Rheum Dis Date: 2012-12-06 Impact factor: 19.103