Phase I trial of IL-2 plasmid DNA with electroporation in metastatic melanoma
2007
8578 Background: Significant toxicity limits the systemic delivery of high-dose recombinant Interleukin-2 (IL-2). An alternative method for extended dosing of IL-2 that may reduce toxicity is by intratumoral injection of IL-2 plasmid DNA (pDNA) with electroporation (EP). Methods: A phase I dose-escalation trial is ongoing in subjects with metastatic melanoma to evaluate the safety of intratumoral delivery of IL-2 pDNA (VCL-IM01, Vical Inc., San Diego, CA) followed by EP (MedPulser DNA EPT System, Inovio, San Diego, CA). Eligible subjects have recurrent metastatic melanoma; an injectable lesion = 1 cm2 and < 25 cm2; ECOG 0 or 1; LDH = 1.5 × ULN, and no brain or liver metastases. In the dose-escalation stage of the trial, 3 subjects in each dose cohort received up to 2 cycles of treatment, each consisting of 4 weekly injections followed by a 4-week observation period. Dose levels included 0.5, 1.5, 5.0 mg/tumor, and 15.0 mg (5 mg in each of 3 tumors). A safety assessment was conducted for each cohort prior ...
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