BackgroundConventional immunosuppressives (cIS) are the choice of treatment for major organ (ocular, vascular, central nervous (CNS) and gastrointestinal (GIS)) involvement to prevent relapses and organ damage in patients with Behcet’s disease (BD).ObjectivesWe aimed to investigate the rate of new major organ involvement in BD patients under cIS treatments during follow-up and to assess the characteristics and treatment protocols of these patients.MethodsThe files of 1114 patients diagnosed with BD and followed (1992-2019) in the Marmara University Behcet’s Clinic were overviewed retrospectively. Patients with follow-up duration less than 6 months were excluded. A total of 806 patients, of whom 56% were male were included in the analysis. Demographic and clinical characteristics, follow-up and treatment data of the patients were recorded from files. Relapse of the same organ and/or new major organ development during the follow-up period of patients receiving cIS was defined as “event under cIS”.ResultsMedian age at diagnosis was 29 (10-65) years and median follow-up duration was 68 months (6-272). Genital ulcer, erythema nodosum and arthritis/arthralgia were more common in women, whereas papulopustular lesions, vascular and ocular involvement were more common in men (p<0.005 for all). Presence of major organ involvement was 56.9% (n=459) and the frequencies of vascular, ocular, CNS and GIS involvement were 29.8%, 33,5%, 9.7%, and 2%, respectively.At diagnosis 232 (50.5%) patients had major organ involvement, whereas it developed in 227 patients during a follow-up of median 3 years (0.5 - 32) after diagnosis. Major organ involvement developed earlier in males compared to females (median 2 years vs 4 years, p = 0.012). In patients with a first-degree relative history of BD, major organ involvement also developed earlier, however without reaching significance (median 1 year vs 3 years) (p= 0,066). 440 patients had follow-up data under cISs with the follow-up duration of median 65.5 months (6-272). Main reason for cISs use was major organ involvement (86.8%), less frequent reasons were mucocutaneous disease (9.3%) and joint involvement (3.8%). An event under ISs (mainly relapses) occurred in 160 (36.4%) patients with median 23 months after cISs initiation. Majority of events (68%) were relapses of the same major organ (Figure 1). The most commonly used cIS agent was azathioprine (87%). Among patients having an event under cISs, 91% of the relapses and 75% of new major organ involvement developed under azathioprine treatment. In patients with an event under cISs, treatment mostly switched to other ISs such as cyclophosphamide, interferon-alpha, and high dose corticosteroids. In 22% of patients, azathioprine was switched to tumor necrosis factor (TNF) inhibitors.ConclusionIn our study, major organ involvement developed in 57% of the 806 BD patients. We observed that disease course was more severe under cIS treatment in male patients diagnosed at a younger age and with the history of familial BD. In one third (36%) of the patients under cIS treatment, a relapse or a new major organ involvement developed despite the cISs use, mainly under azathioprine. TNF-inhibitor use was approved for BD treatment within the last decade in Turkey. Therefore, azathioprine was switched to a TNF inhibitor in only 22%. Our results suggest that earlier and more aggresive treatment of major organ involvement with biologics may be an option in young male patients especially with the history of familial BD, who had the highest risk for severe disease course.Disclosure of InterestsNone declared
Objectives Behçet’s Disease (BD) is a unique systemic vasculitis mainly involving veins in contrast to other vasculitides. Prior studies showed that pulmonary arteries (PA) have a similar structure to systemic veins. In this study, we aimed to assess PA wall thickness by transthoracic echocardiography (TTE) in BD patients compared with healthy controls (HC) and patients with non-inflammatory pulmonary embolism (NIPE). Methods Patients with BD (n = 77), NIPE (n = 33) and HC (n = 57) were studied. PA wall thickness was measured from the mid-portion of the main PA with TTE by two cardiologists blinded to cases. Results PA wall thickness was significantly lower in HC (3.6 (0.3) mm) compared with NIPE (4.4 (0.5) mm) and BD (4.4 (0.6) mm) (p< 0.001 for both). PA wall thickness was similar between BD and NIPE (p= 0.6). Among patients with BD, PA wall thickness was significantly higher in patients with major organ involvement compared with mucocutaneous limited disease (4.7 (0.4) mm vs 3.7 (0.4) mm, p< 0.001), HC and NIPE (p< 0.001 and p= 0.006, respectively). PA wall thickness was comparable between patients with vascular and non-vascular major organ involvement (4.6 (0.5) mm vs 4.7 (0.3) mm, p= 0.3). Conclusion We observed that PA wall thickness was significantly higher in BD with major organ involvement compared with patients with only mucocutaneous limited disease, HC and NIPE. These results suggest that increased PA wall thickness may be a sign of severe disease with major organ involvement in BD.
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