Background
Patients with in-transit melanoma metastases frequently experience high rates of recurrence, limited overall survival and reduced quality of life. After promising results within a Phase II, multi-center study, PV-10 treatment was continued at our institution for patients with in-transit disease.
Methodology
An open-label, non-randomized, prospective study was performed at the Princess Alexandra Hospital, Queensland, Australia. Patients were treated with PV-10 in accordance with the treatment protocol established during a previous Phase II study. The primary outcome was the complete response of treated lesions.
Results
Forty-five patients were enrolled over a total of 82 treatment episodes from July 2008 to December 2015. With sequential PV-10 treatments the complete response rate was 42% and overall response rate 87% on an intention to treat analysis. The median follow-up duration was 22 months and the median overall survival was 25 months from first PV-10 treatment. Having fewer than 15 metastases at the time of treatment was associated with a complete response (P = 0.03).
Conclusions
Intralesional PV-10 provided rapid lesion-specific ablation of melanoma metastases with well-tolerated local effects and minimal systemic adverse events. This therapy should be considered for patients with multiple accessible deposits within the spectrum of low to moderate disease volume.
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