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PDS Biotech Announces the Publication of PDS0301 Study Linking Induced Changes in Immune Responses with Clinical Outcomes in International Immunopharmacology Journal
National Cancer Institute (NCI)-led research of PDS0301, a novel investigational tumor-targeting IL-12 fusion protein, shows dose-dependent, immune responses
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[{"type":"text","content":"National Cancer Institute (NCI)-led research of PDS0301, a novel investigational tumor-targeting IL-12 fusion protein, shows dose-dependent, immune responses and association with improved clinical outcomes\nFLORHAM PARK, N.J., March 01, 2023 (GLOBE NEWSWIRE) -- PDS Biotechnology Corporation (Nasdaq: PDSB), a clinical-stage immunotherapy company developing a growing pipeline of targeted immunotherapies for cancer and infectious disease, announced that clinical research conducted by the NCI, one of the Institutes of the National Institutes of Health, was published in the peer-reviewed journal, International Immunopharmacology. The clinical study assessed immune changes in relation to the dose level and dosing schedule of PDS0301 (NHS-IL12), a novel investigational fusion protein consisting of a tumor-targeting antibody conjugated to Interleukin 12 (IL-12). The study also evaluated the correlation of several treatment-related immunological changes with clinical responses. As described in the paper, titled, “Immune correlates with response in patients with metastatic solid tumors treated with a tumor-targeting immunocytokine NHS-IL12,” the researchers at the NCI evaluated a subset of 23 patients with advanced cancers who participated in a Phase 1 clinical trial of PDS0301. Patients were dosed every 2 weeks with PDS0301 at one of two levels – 12.0 mcg/kg and 16.8 mcg/kg – or every 4 weeks at 16.8 mcg/kg to identify dosing amounts and regimens of PDS0301 that correlate with higher levels of immune activation, including quantities of CD8 T cells, immune suppressive T regulatory cells, natural killer cells (NK) and natural killer T cells (NKT). Patients receiving the higher dose of PDS0301 generated “a more robust immune activation compared to a lower dose,” including a greater expansion of NK, NKT, and CD8 T cells. Additionally, patients treated with the higher dose at two-week intervals had a greater response than patients receiving treatment every four weeks in the study. Importantly, greater increases were seen at the higher dose level in the serum pro-inflammatory cytokines IFNγ and TNFα, and soluble PD-1 (sPD-1). Studies found that increases in sPD-1 post-therapy have been associated with improved survival in various cancers and may indicate re-activation of CD8 T cells. The ability to limit exposure of IL-12 in the circulating bl...