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One drug, sodium thiosulfate, is approved by the FDA for use in pediatric patients with localized solid tumors for preventing cisplatin-induced hearing loss, but more drugs are desperately needed. Here, we tested dabrafenib, an FDA-approved BRAF kinase inhibitor and anticancer drug, in a clinically relevant multidose cisplatin mouse model. The protective effects of dabrafenib, given orally twice daily with cisplatin, were determined by functional hearing tests and cochlear outer hair cell counts. Toxicity of the drug cotreatment was evaluated, and levels of phosphorylated ERK were measured. A dabrafenib dose of 3 mg\/kg BW, twice daily, in mice, was determined to be the minimum effective dose, and it is equivalent to one-tenth of the daily FDA-approved dose for human cancer treatment. The levels of hearing protection acquired, 20\u201325 dB at the 3 frequencies tested, in both female and male mice, persisted for 4 months after completion of treatments. Moreover, dabrafenib exhibited a good in vivo therapeutic index (&gt; 25), protected hearing in 2 mouse strains, and diminished cisplatin-induced weight loss. This study demonstrates that dabrafenib is a promising candidate drug for protection from cisplatin-induced hearing loss.<\/jats:p>","DOI":"10.1172\/jci.insight.171140","type":"journal-article","created":{"date-parts":[[2023,11,7]],"date-time":"2023-11-07T12:00:41Z","timestamp":1699358441000},"source":"Crossref","is-referenced-by-count":17,"title":["Dabrafenib protects from cisplatin-induced hearing loss in a clinically relevant mouse model"],"prefix":"10.1172","volume":"8","author":[{"given":"Matthew A.","family":"Ingersoll","sequence":"first","affiliation":[{"name":"Department of Pharmacology and Neuroscience,"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard D.","family":"Lutze","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Neuroscience,"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chithra K.","family":"Pushpan","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and 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