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Autoimmune Diseases
Volume 2014 (2014), Article ID 327315, 5 pages
http://dx.doi.org/10.1155/2014/327315
Research Article

Role of HLA-B Alleles and Clinical Presentation of B27 Negative Spondyloarthritis Patients from Mumbai, Western India

1Microbiology and Immunology Division, National Institute of Nutrition (ICMR), Jamai-Osmania, Tarnaka, Hyderabad, Andhra Pradesh 500007, India
2Department of Medicine, King Edward Memorial Hospital, Parel, Mumbai 400 012, India
3National Institute of Immunohaematology (ICMR), King Edward Memorial Hospital, 13th Floor, N.M.S. Building, Parel, Mumbai 400 012, India

Received 14 October 2013; Accepted 30 January 2014; Published 6 March 2014

Academic Editor: Edmond J. Yunis

Copyright © 2014 Devaraj J. Parasannanavar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Seronegative spondyloarthritis (SpA) are variably associated with HLA-B*27 antigen. HLA-B*27 negative SpA has also been reported from different parts of the world. There is paucity of data on this entity from Indian subcontinent. We studied 100 consecutively diagnosed HLA-B27 negative spondyloarthritis patients from a tertiary care center in India. Modified New York Criteria for ankylosing spondylitis (AS) and ESSG criteria for SpA were used for diagnosing patients. HLA-B*27 typing was done by an in-house PCR-SSP technique in SpA patients to exclude B*27 positive patients and PCR-SSOP technique was used to type 100 B*27 negative SpA patients and 100 controls from the same ethnicity. Frequency of B*07 was significantly increased (B*07: % PF 54 versus 18; OR 5.348; 95% CI 2.808–10.186; value 1.14E − 07), whereas frequency of B*40 was significantly decreased (B*40: % PF 17 versus 32; OR 0.435; 95% CI 0.222–0.850; value 0.013) when compared with B*27 negative controls. Among 100 SpA patients, 47 were undifferentiated spondyloarthritis and 33 patients were reactive arthritis patients. 40% of the patients were suffering from polyarticular arthritis, 35% had pauciarticular arthritis with knee joint, hip joint, ankle joint, and SI joint involvement. We conclude that B*07 was significantly associated with B27 negative spondyloarthropathy from Western India and majority of B*27 negative patients were uSpA.