TY - JOUR
T1 - Identification of novel genetic susceptibility loci in African American lupus patients in a candidate gene association study
AU - Sánchez, Elena
AU - Comeau, Mary E.
AU - Freedman, Barry I.
AU - Kelly, Jennifer A.
AU - Kaufman, Kenneth M.
AU - Langefeld, Carl D.
AU - Brown, Elizabeth E.
AU - Alarcón, Graciela S.
AU - Kimberly, Robert P.
AU - Edberg, Jeffrey C.
AU - Ramsey-Goldman, Rosalind
AU - Petri, Michelle
AU - Reveille, John D.
AU - Vilá, Luis M.
AU - Merrill, Joan T.
AU - Tsao, Betty P.
AU - Kamen, Diane L.
AU - Gilkeson, Gary S.
AU - James, Judith A.
AU - Vyse, Timothy J.
AU - Gaffney, Patrick M.
AU - Jacob, Chaim O.
AU - Niewold, Timothy B.
AU - Richardson, Bruce C.
AU - Harley, John B.
AU - Alarcón-Riquelme, Marta E.
AU - Sawalha, Amr H.
PY - 2011/11
Y1 - 2011/11
N2 - Objective Candidate gene and genome-wide association studies have identified several disease susceptibility loci in lupus patients. These studies have largely been performed in lupus patients who are Asian or of European ancestry. This study was undertaken to examine whether some of these same susceptibility loci increase lupus risk in African American individuals. Methods Single-nucleotide polymorphisms tagging 15 independent lupus susceptibility loci were genotyped in a set of 1,724 lupus patients and 2,024 healthy controls of African American descent. The loci examined included PTPN22, FCGR2A, TNFSF4, STAT4, CTLA4, PDCD1, PXK, BANK1, MSH5 (HLA region), CFB (HLA region), C8orf13-BLK region, MBL2, KIAA1542, ITGAM, and MECP2/IRAK1. Results We found the first evidence of genetic association between lupus in African American patients and 5 susceptibility loci (C8orf13-BLK, BANK1, TNFSF4, KIAA1542, and CTLA4; P = 8.0 × 10-6, P = 1.9 × 10-5, P = 5.7 × 10-5, P = 0.00099, and P = 0.0045, respectively). Further, we confirmed the genetic association between lupus and 5 additional lupus susceptibility loci (ITGAM, MSH5, CFB, STAT4, and FCGR2A; P = 7.5 × 10-11, P = 5.2 × 10-8, P = 8.7 × 10 -7, P = 0.0058, and P = 0.0070, respectively), and provided evidence, for the first time, of genome-wide significance for the association between lupus in African American patients and ITGAM and MSH5 (HLA region). Conclusion These findings provide evidence of novel genetic susceptibility loci for lupus in African Americans and demonstrate that the majority of lupus susceptibility loci examined confer lupus risk across multiple ethnicities.
AB - Objective Candidate gene and genome-wide association studies have identified several disease susceptibility loci in lupus patients. These studies have largely been performed in lupus patients who are Asian or of European ancestry. This study was undertaken to examine whether some of these same susceptibility loci increase lupus risk in African American individuals. Methods Single-nucleotide polymorphisms tagging 15 independent lupus susceptibility loci were genotyped in a set of 1,724 lupus patients and 2,024 healthy controls of African American descent. The loci examined included PTPN22, FCGR2A, TNFSF4, STAT4, CTLA4, PDCD1, PXK, BANK1, MSH5 (HLA region), CFB (HLA region), C8orf13-BLK region, MBL2, KIAA1542, ITGAM, and MECP2/IRAK1. Results We found the first evidence of genetic association between lupus in African American patients and 5 susceptibility loci (C8orf13-BLK, BANK1, TNFSF4, KIAA1542, and CTLA4; P = 8.0 × 10-6, P = 1.9 × 10-5, P = 5.7 × 10-5, P = 0.00099, and P = 0.0045, respectively). Further, we confirmed the genetic association between lupus and 5 additional lupus susceptibility loci (ITGAM, MSH5, CFB, STAT4, and FCGR2A; P = 7.5 × 10-11, P = 5.2 × 10-8, P = 8.7 × 10 -7, P = 0.0058, and P = 0.0070, respectively), and provided evidence, for the first time, of genome-wide significance for the association between lupus in African American patients and ITGAM and MSH5 (HLA region). Conclusion These findings provide evidence of novel genetic susceptibility loci for lupus in African Americans and demonstrate that the majority of lupus susceptibility loci examined confer lupus risk across multiple ethnicities.
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U2 - 10.1002/art.30563
DO - 10.1002/art.30563
M3 - Article
C2 - 21792837
AN - SCOPUS:80155130254
SN - 2326-5191
VL - 63
SP - 3493
EP - 3501
JO - Arthritis and Rheumatology
JF - Arthritis and Rheumatology
IS - 11
ER -