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A Study Evaluating the Safety, Pharmacokinetics and Early Efficacy of AVA6000 in Solid Tumours

ABSTRACT: This open-label, First-into-Human (FIH) study will evaluate the safety, tolerability, pharmacokinetics (PK) and early efficacy of AVA6000, a FAP-activated pro-drug of doxorubicin, in patients with locally advanced and/or metastatic solid tumours. In Phase Ia, using a 3+3 design, escalating doses of AVA6000 will be administered to patients with a range of solid tumour types to determine the maximum tolerated dose (MTD) and/or recommended Phase II dose (RP2D). In Phase 1b, the selected RP2D dose will be assessed in one to three tumour types.

DISEASE(S): Sarcoma,Neoplasms, Unknown Primary,Biliary Tract Neoplasms,Colorectal Cancer,Soft Tissue Sarcoma,Bladder Cancer,Pancreatic Cancer,Breast Cancer,Ovarian Cancer,Cancer Of Unknown Primary Site,Biliary Tract Cancer,Oesophageal Cancer,Non-small Cell Lung Cancer,Prostate Cancer,Head And Neck Cancer

PROVIDER: 2383913 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:A Cytotoxic T lymphocyte-inspired system capable of using ultralow-dose chemical drugs to manipulate cell death is needed to investigate the antitumour immunotherapy. Recent studies revealed pyroptosis, a proinflammatory type of cell death, could promote antitumour immune function. However, high-dose chemotherapy led to cytokine release syndrome by pyroptosis. Therefore, pyroptosis- inducing ultralow-dose chemotherapy was potential in preclinical and clinical research, but its efficacy, safety and the antitumour immune responses were not clear. Here, we established a near-infrared light controllable killing system (BIK system) by which ultralow-dose doxorubicin could be spatiotemporally transported to immunosuppressive tumour cells and mediate efficient pyroptosis. Compared with using DOX directly, the BIK system reduced total drug consumption to less than one- thirtieth the common dose in vitro. MPI imaging and fluorescence imaging showed our BIK system exhibited good tumour targeting and tumour penetration. We applied this system for pyroptosis-induced antitumor therapies, and the results showed that less than 43 µg kg-1 DOX was sufficient for GSDME-positive tumour regression with negligible injuries to major organs. Notably, the gasdermin-deficient 4T1 tumours could be controlled by combining BIK system with decitabine treatment. The antitumour immune function were proven to correlate with the impressive efficacy of pyroptosis-inducing ultralow-dose chemotherapy, and the concomitant immune memory prevented metastasis, but high-dose DOX led to poor T cells infiltration which caused immunosuppression and lung metastasis. Owing to the robust antitumour immune function induced by BIK system, advanced-stage bulky tumours could be controlled or shrunken by synergizing with anti-PD-1 therapy. This study provided new insights into the design of nanoassisted systems for activating the antitumour immune function by microstimulation; our application of the BIK system suggested that ultralow-dose chemotherapy was sufficient for inducing a robust pyroptosis-mediated antitumour immune function

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A Study Evaluating the Safety, Pharmacokinetics and Early Efficacy of AVA6000 in Solid Tumours

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