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- W2947696105 abstract "Interstitial lung diseases (ILDs) are a group of heterogeneous disorders, either idiopathic (idiopathic pulmonary fibrosis-IPF) or associated with other diseases, particularly autoimmune diseases, from which systemic sclerosis is the leading disease at risk of developing ILD. It has been proposed that for clinical research and patient management various subsets of fibrosing ILD that have similar biological and clinical behaviours could be merged into a single entity although specificities within each disease remain, with various patterns of lung injury. Nevertheless, the shared part relates to progressive fibrosing ILD leading to progressive decline in lung function and early mortality. In SSc, a recent report from EUSTAR network showed that ILD was nowadays the first cause of death identified as contributing to 17% of deaths (1). No drugs are licensed for the treatment of ILDs related to autoimmune diseases. Treatment guidelines issued by the European League Against Rheumatism (EULAR) recommend tailored therapy with cyclophosphamide (CYC) for SSc-ILD, in particular for patients with progressive ILD (2). Indeed, 3 randomized controlled trials showed some benefits of using CYC either orally or by infusion route although the effect size was small and the clinical translation of the findings was difficult to establish. The limitations of CYC trials in SSc-ILD led the experts to add that dose and duration of treatment need to be tailored individually dependent on the clinical condition and response. Furthermore, with regards to safety, potential risks of bone marrow suppression, teratogenicity, gonadal failure and haemorrhagic cystitis must be always considered. Beyond standard immunosuppression, the use of high dose CYC, with or without irradiation, but using rescue with stem cells showed some effects on ILD measured through lung function and imaging. Nevertheless, considering the risk of potential treatment-related mortality and morbidity, the EULAR experts recommend that HSCT should be considered for the treatment of selected patients with rapidly progressive SSc at risk of organ failure, two domains which remain to be delineated. Altogether these results suggest that immunosuppressants might be beneficial in the context of SSc-ILD although the right drug, the right dosing and the right patients still need to be defined. In practice, because of SLS2 trial, mycophenolate mofetil has emerged as the leading drug used when a physician aims at treating SSc-ILD. The understanding of SSc and SSc-ILD have improved in the recent years and subset at risk and candidate biomarkers have emerged. Indeed, interleukin 6 has been shown to predict some disease progression including lung involvement. Therefore, targeted therapy against IL6 is an appealing strategy to improve SSc outcomes. If the pivotal trials using tocilizumab had skin as a primary outcome and failed to meet the primary end-point, secondary analyses revealed stimulating lung results that will be showed during EULAR 2019 and discussed within the ILD session. B-cells role has also been scrutinized in SSc with promising data. Therefore, rituximab is used in some SSc patients with various indications according to physician views and experience. EUSTAR has assembled a large group of rituximab treated patients and performed a well-designed observational study that did not show clear evidence supporting some efficacy of rituximab on SSc-ILD although some clues emerged. The role of antifibrotic drugs (nintedanib, pirfenidone), that showed to slow disease progression in patients with IPF, in patients in other forms of fibrosing ILD remains to be determined. However, several trials are ongoing and the results of the SENSCIS trial evaluating nintedanib in SSc-ILD will be presented during EULAR 2019 and discussed during the ILD session. Altogether, the available results show some progresses made in the management of SSc-ILD, so far mainly through the use of treatment targeting immune disturbances. Considering the severity and the complexity of SSc pathogenesis and related lung complication, one might anticipate that if trials of antifibrotic therapies are positive, the treatment of SSc-ILD, and maybe of all fibrosing autoimmune ILDs, might involve combination of immunosuppression and antifibrotic therapies. References: [1] Elhai, et al. Ann Rheum Dis. 2017;76(11):1897-1905. [2] Kowal-Bielecka, et al. Ann Rheum Dis. 2017;76(8):1327-1339. Disclosure of Interests: Yannick Allanore Grant/research support from: Inventiva, F Hoffman La-Roche, Sanofi, BMS, Pfizer, Consultant for: Actelion, Bayer, BMS, Boehringer, Roche, Sanofi" @default.
- W2947696105 created "2019-06-07" @default.
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- W2947696105 date "2019-06-01" @default.
- W2947696105 modified "2023-09-24" @default.
- W2947696105 title "SP0071 WIN: SYSTEMIC SCLEROSIS – INNOVATIVE TREATMENT TARGETS OR “LOST IN TRANSLATION”?" @default.
- W2947696105 doi "https://doi.org/10.1136/annrheumdis-2019-eular.8416" @default.
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