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Clin Cancer Res. 2007 Jan 1;13(1):215-22.

Alum with interleukin-12 augments immunity to a melanoma peptide vaccine: correlation with time to relapse in patients with resected high-risk disease.

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The Angeles Clinic and Research Institute, Santa Monica, USA.



We attempted to augment immunity to melanoma antigens using interleukin-12 (IL-12) with aluminum hydroxide (alum) for sustained release or granulocyte macrophage colony-stimulating factor (GM-CSF) added to a multipeptide vaccine.


Sixty patients with high-risk resected melanoma were randomized to receive melanoma peptides gp100(209-217) (210M), MART-1(26-35) (27L), and tyrosinase(368-376) (370D) with adjuvant Montanide ISA 51 and either IL-12 at 30 ng/kg with alum (group A), IL-12 at 100 ng/kg with alum (group B), or IL-12 at 30 ng/kg with 250 mug GM-CSF (group C).


Three patients had stage IIC (5%), 50 had stage III (83%), and 7 had stage IV (12%) melanoma. Most toxicities were grade 1/2 and resolved rapidly. Significant toxicity included grade 3 colitis and visual changes and grade 3 headache resolving after stopping IL-12 but continuing peptide vaccine. A higher rate of post-vaccine 6-month immune response to gp100 and MART-1 was observed in group A (15 of 19) or B (19 of 20) that received IL-12 plus alum versus group C with IL-12/GM-CSF (4 of 21; P < 0.001). Post-vaccine enzyme-linked immunospot response rates to peptide analogues in group B were higher than group A (P = 0.031 for gp100 and P = 0.010 for MART-1); both were higher than group C (P < 0.001 for gp100 and P < 0.026 for MART-1). With a median of 24 months of follow-up, 23 patients have relapsed. Post-vaccine immune response to MART-1 was associated with relapse-free survival (P = 0.012).


IL-12 with alum augmented an immune response to melanoma antigens compared with IL-12 with GM-CSF. Immune response was associated with time to relapse.

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