OBJECTIVE: To seek potential autoimmune disease susceptibility loci by testing for linkage and linkage disequilibrium between insulin-dependent diabetes mellitus (IDDM) susceptibility loci and rheumatoid arthritis (RA). METHODS: Five IDDM susceptibility loci map to 2 chromosomal regions, chromosome 2q31-34 (IDDM7, 12, and 13) and chromosome 6q25-27 (IDDM5 and 8). Microsatellite markers within these regions were genotyped in 255 RA families, by fluorescence-based genotyping technology. Evidence for linkage disequilibrium was assessed using the extended transmission disequilibrium test (ETDT) program. RESULTS: With the ETDT, we found evidence for linkage disequilibrium of the marker D6S446, at IDDM8, with RA (P < 0.0001). There was additional evidence for linkage disequilibrium with 2 markers at IDDMS (D6S311 and D6S440) (P = 0.016 and P = 0.017, respectively). There was no evidence for significant linkage disequilibrium of RA with any markers at IDDM7, 12, or 13. CONCLUSION: These results support the hypothesis that there are autoimmune disease genes at IDDM5 and IDDM8.
OBJECTIVE: To seek potential autoimmune disease susceptibility loci by testing for linkage and linkage disequilibrium between insulin-dependent diabetes mellitus (IDDM) susceptibility loci and rheumatoid arthritis (RA). METHODS: Five IDDM susceptibility loci map to 2 chromosomal regions, chromosome 2q31-34 (IDDM7, 12, and 13) and chromosome 6q25-27 (IDDM5 and 8). Microsatellite markers within these regions were genotyped in 255 RA families, by fluorescence-based genotyping technology. Evidence for linkage disequilibrium was assessed using the extended transmission disequilibrium test (ETDT) program. RESULTS: With the ETDT, we found evidence for linkage disequilibrium of the marker D6S446, at IDDM8, with RA (P < 0.0001). There was additional evidence for linkage disequilibrium with 2 markers at IDDMS (D6S311 and D6S440) (P = 0.016 and P = 0.017, respectively). There was no evidence for significant linkage disequilibrium of RA with any markers at IDDM7, 12, or 13. CONCLUSION: These results support the hypothesis that there are autoimmune disease genes at IDDM5 and IDDM8.
Authors: Susan D Thompson; Marc Sudman; Paula S Ramos; Miranda C Marion; Mary Ryan; Monica Tsoras; Tracey Weiler; Michael Wagner; Mehdi Keddache; J Peter Haas; Cornelia Mueller; Sampath Prahalad; John Bohnsack; Carol A Wise; Marilynn Punaro; Dongping Zhang; Carlos D Rosé; Mary E Comeau; Jasmin Divers; David N Glass; Carl D Langefeld Journal: Arthritis Rheum Date: 2010-11
Authors: John P Mordes; Dennis L Guberski; Jean H Leif; Bruce A Woda; Joan F Flanagan; Dale L Greiner; Edward H Kislauskis; Rebecca S Tirabassi Journal: Diabetes Date: 2005-09 Impact factor: 9.461
Authors: Paula S Ramos; Lindsey A Criswell; Kathy L Moser; Mary E Comeau; Adrienne H Williams; Nicholas M Pajewski; Sharon A Chung; Robert R Graham; Raphael Zidovetzki; Jennifer A Kelly; Kenneth M Kaufman; Chaim O Jacob; Timothy J Vyse; Betty P Tsao; Robert P Kimberly; Patrick M Gaffney; Marta E Alarcón-Riquelme; John B Harley; Carl D Langefeld Journal: PLoS Genet Date: 2011-12-08 Impact factor: 5.917