• Lynn E Spitler, Robert W Weber, Robert E Allen, John Meyer, Scott Cruickshank, Edeltraut Garbe, Hui-Yi Lin, and Seng-jaw Soong.
• Northern California Melanoma Center, Saint Mary's Medical Center, San Francisco, CA 94117-1079, USA. lynn.spitler@chw.edu
• J. Immunother. 2009 Jul 1;32(6):632-7.

AbstractA hypothesis generating study was conducted to evaluate the safety and efficacy of prolonged (3 y) administration of granulocyte-macrophage colony-stimulating factor (GM-CSF, sargramostim) as surgical adjuvant therapy in patients with melanoma at high risk of recurrence. Ninety-eight evaluable patients with stages II(T4), III, or IV melanoma were given prolonged treatment with GM-CSF after surgical resection of disease. The GM-CSF was administered subcutaneously in 28-day cycles, such that a dose of 125 microg/m2 was delivered daily for 14 days followed by 14 days rest. Treatment cycles continued for 3 years or until disease recurrence, which could not be surgically excised. Patients were evaluated for toxicity, disease-free survival, and melanoma-specific survival. Prolonged administration of GM-CSF was well tolerated; grade 1 or 2 side effects occurred in 82% of the patients. There were no grade 3 or 4 treatment-related side effects. Two patients developed acute myelogenous leukemia after completion of 3 years of GM-CSF administration. With a median follow-up of 5.3 years, the median melanoma-specific survival has not yet been reached. The 5-year melanoma-specific survival rate was 60%. The current study has expanded the preliminary evidence on GM-CSF as adjuvant therapy of patients with melanoma who are at high risk for recurrence.

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