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- W4307049726 abstract "OBJECTIVE Neurofibromatosis type 2 (NF2) is a rare autosomal dominant syndrome associated primarily with bilateral vestibular schwannomas (VSs). Conventional surgical or radiosurgical treatments for VS in NF2 usually result in high risks of hearing loss and facial nerve impairment, while there is no validated medical option to date. This single-institution phase II study evaluated the efficacy and safety of icotinib, an oral epidermal growth factor receptor tyrosine kinase inhibitor, in patients with NF2 and progressive VS. METHODS Icotinib was administered daily at 375 mg orally in a continuous 28-day course for up to 12 courses. The primary endpoint of the study was radiographic response assessed by brain MRI using 3D volumetric tumor analysis and defined as a ≥ 20% decrease in VS volume. Hearing function was evaluated as a secondary endpoint, with response defined as a statistically significant increase in word recognition scores. RESULTS Ten eligible patients with a mean age of 23.8 years were enrolled. One patient (10%) with bilateral tumors experienced an objective radiographic response (−23.58% and −22.01%). Three (43%) of 7 patients met the hearing response criteria. At 12 months, the estimated progression-free survival was 82.0% (95% CI 42.3%–95.5%) for volumetric progression and 69.2% (95% CI 37.3%−87.2%) for hearing progression. Common mild to moderate adverse events included rash (90%), diarrhea (50%), myalgia (20%), and nausea/gastrointestinal pain (20%). CONCLUSIONS Icotinib carries minor toxicity and is associated with radiographic and hearing responses in patients with NF2 and progressive VS." @default.
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- W4307049726 date "2022-10-01" @default.
- W4307049726 modified "2023-09-23" @default.
- W4307049726 title "Phase II trial of icotinib in adult patients with neurofibromatosis type 2 and progressive vestibular schwannoma" @default.
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- W4307049726 doi "https://doi.org/10.3171/2022.9.jns22699" @default.
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