• Jianyong Dong, Deting Han, Desheng Wang, Huijun Lu, and Xiaoliang Wang.
• Gaoxin Branch of Jinan Stomatological Hospital.
• Medicine (Baltimore). 2020 Oct 2; 99 (40): e22596e22596.

BackgroundThe pathophysiologic of vascular malformations is still unclear, and the treatment of vascular malformations is a challenge. With improvement in the understanding of pathogenesis of vascular malformations, sirolimus has been a promising and effective treatment. As so far, there is absent convincing evidence to confirm the efficacy of sirolimus for vascular malformations. The purpose of this study was to evaluate the effectiveness and safety of sirolimus in the treatment of vascular malformations.MethodsThe literatures about the management of vascular malformations with sirolimus would be searched from databases of MEDLINE, EMBASE, PubMed, Web of Science, Clinicaltrials.org., Cochrane Library, China Biology Medicine Database (CBM), Wan Fang Database, China National Knowledge Infrastructure Database (CNKI), and VIP Science Technology Periodical Database. We will search each database from inception or 1995 to August 20, 2020. Two researchers worked independently on literature selection, data extraction and quality assessment. The efficacy and safety of sirolimus in the treatment of vascular malformations were the main outcomes. Adverse events after sirolimus were evaluated as the secondary outcomes. The included studies will be analyzed by Review Manager 5.3. If the results are applicable, meta-analysis would also be performed.ResultsThe study will evaluate the efficacy and safety of sirolimus in the treatment of vascular malformations based on current evidence.ConclusionThe conclusion of this study will provide more reliable, evidence-based data for the use of sirolimus in the treatment of vascular malformations.Prospero Registration NumberCRD42020167881.

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