ArticleEuropean archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery2025
Efficacy of first line of bevacizumab in patients with neurofibromatosis 2-related vestibular schwannomas.
Article in European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeNF2-related schwannomatosis (NF2) patients are predisposed to develop multiple peripheral and central nervous tumors including bilateral vestibular schwannomas (VS). Decision on patient management, especially in large growing tumors, might be challenging concerning possible treatment-related complications and quality of life. Systemic therapy with bevacizumab has been reported to slow VS growth and improve hearing. Here, we present single-center outcomes of NF2 patients treated with bevacizumab.
methodsWe conducted a retrospective analysis of 15 NF2 patients with morphologically diagnosed unilateral or bilateral VS indicated for systemic therapy with bevacizumab (5 mg/kg every 2 weeks) in 2015-2022. Tumor growth rate, volume, and hearing thresholds were assessed before, during, and after first-line bevacizumab therapy.
results15 patients (5 male, 10 females, mean age at the start of the therapy 30y, mean no. of bevacizumab cycles 35) and 25 tumors were evaluated. Radiologically significant (> 20% from the baseline) tumor volume reduction was observed in 5 patients. Notably, in patients with bilateral VS, volume reduction occurred on only one side. Three patients demonstrated a significantly reduced growth rate and tumor stabilization. Hearing improvement was documented in 1 patient, while another experienced significant hearing decline.
conclusionBevacizumab therapy may contribute to tumor shrinkage and hearing stabilization in NF2 patients. However, treatment response is variable, with meaningful tumor reduction and hearing improvement observed only in a minority of cases.
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