Carboplatin and vinblastine monthly in the optic pathway and hypothalamic gliomas: A retrospective analysis in a single institute.
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BACKGROUND: Chemotherapy plays an important role in the treatment of optic pathway hypothalamic gliomas (OPHGs). Commonly used regimens include carboplatin and vincristine and monotherapy with vinblastine weekly. In this retrospective study, we used a monthly regimen of carboplatin and vinblastine to treat progressive/recurrent OPHGs and evaluated their effectiveness, visual preservation, and toxicity. METHODS: The study involved patients with OPGH who were treated with carboplatin and vinblastine once per month. The response, disease progression, overall survival, vision changes, and toxicity were recorded according to their medical charts at our institute, and survival was analyzed. RESULTS: A total of 25 patients were included, including 15 males (60%) and 10 females (40%). The response rate was 11/25 (44%), and the stabilization rate (complete response rate + partial response rate + minor response rate + and stable disease rate) was 21/25 (84%). The 3-year progression-free survival (PFS) rate was 54.6%, and the 5-year PFS rate was 46.8%. The 5-year overall survival rate was 100%. There were 6 patients who showed improved visual acuity (28.6%). Stable vision was found in 52.4% of patients. Only 2 patients experienced severe allergic reactions to carboplatin. CONCLUSIONS: The results showed that extending the dosing interval of carboplatin and vinblastine to every month can be seen as a similar response compared with previous regimens. The toxicity of this regimen is milder, and patients benefit from a lower frequency of hospital visits. The regimen can be considered as a choice of the first line of chemotherapy for OPHG patients.