Tozkir, HilmiPamuk, Omer NuriDuymaz, JulideGurkan, HakanYazar, MetinSari, GulcePamuk, Gulsum EmelGenetik ve Biyomühendislik / Genetic and Bio-Engineering2024-05-252024-05-25201671756-18411756-185X10.1111/1756-185X.124842-s2.0-84910604305https://doi.org/10.1111/1756-185X.12484https://hdl.handle.net/20.500.14517/209Yazar, Metin/0000-0002-2657-3072; Gürkan, Hakan/0000-0002-8967-6124; SARI, Gulce/0000-0002-8585-5889Aim: There is significant autoantibody production in systemic lupus erythematosus (SLE) and scleroderma (SSc); microchimerism is also thought to play a role in pathogenesis. We determined the frequency of anti-HLA antibodies in SLE and SSc patients and evaluated associated clinical factors. Methods: We included 77 SLE patients, 46 SSc patients and 53 healthy controls into the study. Clinical data about the patients were obtained from hospital records. Anti-human leukocyte (anti-HLA) antigen antibody analysis of sera was performed by applying Lifecodes anti-HLA Class I and Class II Screening kits based on xMAP technology. Results: The frequencies of class I and II anti-HLA antibodies were significantly higher in SLE (27.3% and 41.6%) and SSc (26.1% and 41.3%) groups than in healthy controls (1.9% and 5.7%) (all P < 0.001). Frequencies of thrombocytopenia (P = 0.021), anti-ribonucleoprotein (P = 0.037) and anti-Ro (P = 0.027) were significantly higher in the class I antibody-positive SLE group; however, pericarditis was less frequent (P = 0.05). On the other hand, the class II antibody-positive SLE group had more frequent anti-ribosomal P antibody (P = 0.038), but less frequent active disease (P = 0.038). In the SSc group, class I antibody-positive patients had more frequent digital ulcers (P = 0.048) and anti-centromere antibodies (P = 0.01). There was no association of anti-HLA antibodies with pulmonary hypertension and interstitial fibrosis in SSc patients. Conclusions: Both class I and class II antibodies were found to be significantly increased in SLE and SSc. Rather than major organ involvement, anti-HLA antibodies were associated with the presence of other antibodies in both diseases.eninfo:eu-repo/semantics/closedAccessanti-HLA class I antibodyanti-HLA class II antibodysclerodermasystemic lupus erythematosusArticleQ3Q3191213041309WOS:00039823080001225292400