$PVCT & Pfizer, Inc. Discussions between resear
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Discussions between researchers at Provectus and Pfizer led to jointly owned US patent 9,107,887 covering the use of Provectus' investigational anti-cancer drug, PV-10, in combination with systemic inhibitors of immune system down-regulation, such as anti-CTLA-4, PD-1 and PD-L1 antibodies, along with enhancers of immune system up-regulation, such as IL-2 and interferon-gamma.