Low grade gliomas (LGG) are the most frequent brain tumor type in children. They are often chemosensitive. However, more than 50% of these tumors will progress within the first 5 years after the start of the treatment and need a second-line therapy. In most cases, patients are still young and the risk of side effects from radiation therapy will call for another medical treatment. If a tumor does not respond to first-line chemotherapy, the prognosis worsens with 25% of deaths within the first 5 years for optic gliomas. Vinblastine (Velbe®) is an effective drug for low grade gliomas with both antiproliferative and antiangiogenic effects. An update of the Canadian phase II of weekly vinblastine (6 mg/m²/week) reported one complete response (CR), three partial responses (PR) and 9 minor responses (MR) in the first 31 patients. The 1-year progressionfree survival (PFS) rate was 57%. Tolerance of the treatment is fair allowing prolonged maintenance therapy as in Langerhans cell histiocytosis and anaplastic large cell lymphoma (ALCL). These data encourage proceeding with further testing this approach in pediatric low-grade glioma.