Journal
EUROPEAN JOURNAL OF INTERNAL MEDICINE
Volume 109, Issue -, Pages 42-49Publisher
ELSEVIER
DOI: 10.1016/j.ejim.2022.12.003
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Anti-tumor necrosis factor-alpha agents have been found to be effective in treating refractory sarcoidosis, although studies have shown conflicting results. This systematic meta-analysis confirms the effectiveness of anti-TNF-alpha agents in both pulmonary and extrapulmonary sarcoidosis, with a slightly higher efficacy observed in extrapulmonary sarcoidosis.
Importance: Anti-tumor necrosis factor-alpha agent (anti-TNF-alpha) is considered an effective third-line therapy for refractory sarcoidosis,studies observing the efficacy of anti-TNF-alpha agents show conflicting results.Objective: We performed an up-to-date systemic meta-analysis to determine effectiveness and further elucidate the role of anti-TNF-alpha in the treatment of sarcoidosis.Data sources: A systematic search was carried out in PubMed/Medline, EMBASE, and Cochrane Library for studies reporting the therapeutic effects of anti-TNF drugs on patients with pulmonary and extra-pulmonary sarcoidosis, published up to April 10, 2022. The study was registered in the international prospective register of systematic reviews (PROSPERO) under ID: CRD42022364614.Study selection: Clinical trials written reporting the therapeutic effects of anti-TNF drugs on patients with pulmonary and extra-pulmonary sarcoidosis were included. Data extraction and synthesis: Statistical analyses were performed with Comprehensive Meta-Analysis software, and the random-effects model was used. The combined overall treatment success was determined for patients with pulmonary and extrapulmonary sarcoidosis.Main outcomes and measures: Overall treatment success rate wasdefined as no disease progression or improvement in symptoms.Results: Eight clinical trial articles were included in the meta-analysis; four used Infliximab, two Etanercept, one Adalimumab, and one Ustekinumab and Golimumab. The mean age of participants was 48.5 years. The duration of drug therapy ranged from 14 to 45 weeks. We found a combined overall treatment success rate, defined as no disease progression or improvement in symptoms, of 69.9% (95% CI 35.0-90.9, I2: 70%) in the pulmonary sarcoidosis group and 74.5% (95% CI 36.3-93.7, I2: 90%) in the extrapulmonary sarcoidosis group. There was no evidence of publication bias in either group.Conclusion and relevance: Treatment of refractory sarcoidosis with anti-TNF-alpha agents was effective in both pulmonary and extrapulmonary sarcoidosis, with a slightly higher efficacy seen in extrapulmonary sarcoidosis. Further randomized controlled trials should be conducted to determine the effects of anti-TNF-alpha agents as a part of the management strategy of sarcoidosis. Patients with pulmonary sarcoidosis should be studied separately from patients with extrapulmonary sarcoidosis to adjust for confounding results.
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