RESUMO
Introduction: Spondyloarthropathies are a heterogeneousgroup of inflammatory interrelated diseases involvingperipheral joints and spine. All forms of spondyloarthropathiesare known to have a strong association with HLA-B27 gene invarious studies done. There was a paucity of literature aboutclinical and demographic characteristics of the HLA-B27positive arthritis patients in Rajasthan. So this study wasplanned to know the seropositivity of HLA-B27 amongseronegative spondyloarthritis patients and to find outassociation between socio-demographic and clinicalcharacteristics and HLA-B27 seroprevalence.Materials and Methods: A cross sectional observational studywas carried out from May 2017 to April 2018 in Department ofPathology, SMS Medical College, Jaipur (Rajasthan). A total of100 cases of spondyloarthritis disease were enrolled in thestudy to find out seroprevalence of HLA-B27 and todifferentiate the clinical and demographic characteristics inHLA-B27 positive and negative patients.Results: In the present study 29% seroprevalence of HLA-B27was observed. Seropositivity of HLA-B27 was significantlyassociated with age (P-value < 0.05) while sex, religion, caste,family history, raised ESR, Positive C-reactive protein, RAfactor etc. were showed no significant association (P-value >0.05).Conclusion: This study confirms the previously reportedassociation in ankylosing spondylitis patients between HLAB27 and earlier disease onset with male preponderance &family aggregation.