AVA-6103 / Avacta - LARVOL DELTA

Discovery and characterization of novel pre|CISION® technology compounds delivering complementary dual warheads to the tumor microenvironment following FAP cleavage (AACR-NCI-EORTC 2025) - "Previously we have presented AVA6103, a pre|CISION® -enabled exatecan candidate in IND-enabling studies...We show the potential of the technology to deliver a therapeutically relevant combination of warheads specifically to the TME while reducing systemic dose-limiting toxicities. This broadens the utility of the pre|CISION® platform in the delivery of novel medicines."

Biomarker • Tumor microenvironment • Oncology • Solid Tumor • CAFs

Avacta Provides Q2 2025 Business Update Outlining Progress Against Strategic Objectives (Avacta Press Release) - "FAP-EXd (AVA6103), a pre|CISION-enabled PDC comprised of the pre|CISION peptide linked to exatecan, continues preclinical development. AVA6103 is currently in investigational new drug (IND)-enabling studies with a Phase 1 trial anticipated to begin in the first quarter of 2026."

New P1 trial • Oncology

Preliminary Results for the Year Ended December 31, 2024 - "FAP-Dox (AVA6000) – first pre|CISION program: Completed Phase 1a enrollment dose escalation portion of clinical trial; Opening of the Phase 1b expansion cohorts in salivary gland cancers, triple negative breast cancer and high-grade soft tissue sarcoma; Anticipate releasing the initial data in salivary gland cancer in late 2025 and in triple negative breast cancer in H1 2026. Phase 2 trials in these indications planned for H1 2026. FAP-EXd (AVA6103): Clinical candidate selection enables move toward clinical testing, by advancing to Investigational New Drug (IND)-enabling studies and Good Manufacturing Practices (GMP) manufacturing process development to support initiation of the Phase 1 clinical trial in Q1 2026."

New P1 trial • New P2 trial • P1 data • Salivary Gland Cancer • Soft Tissue Sarcoma • Triple Negative Breast Cancer

Preclinical pharmacokinetic results from its second pre|CISION candidate AVA6103 (GlobeNewswire) - "Avacta Therapeutics...today announced...that were presented alongside preclinical pharmacokinetic results from its second pre|CISION candidate AVA6103 (FAP-EXd) at the American Association for Cancer Research (AACR) Annual Meeting in Chicago, IL."

Preclinical • Oncology

Comparative pharmacokinetics and tumor activation of fibroblast activation protein (FAP)-enabled pre|CISION® peptide drug conjugates (AACR 2025) - "Two payloads are described using this platform: AVA6000 (doxorubicin [dox]; pre-clinical and clinical) and AVA6103 (exatecan, pre-clinical). In the Phase 1 trial, AVA6000 exhibits promising tumor-targeting characteristics with encouraging clinical activity and reduced systemic toxicities validating the tumor-specific FAP cleavage mode of action. These AVA6000 data along with the preclinical PK data with AVA6103 have informed the predictive modeling to support the clinical development of AVA6103 by optimizing the delivery of the exatecan payload."

PK/PD data • Oncology • Salivary Gland Cancer • Solid Tumor

The novel peptide drug conjugate AVA6103 is a FAP-enabled pre|CISION® medicine which targets exatecan, a topoisomerase I inhibitor, to the tumor microenvironment following FAP cleavage (AACR 2025) - "Tolerability profiles of AVA6103, allied with tumor growth inhibition efficacy, shows a greatly increased therapeutic window compared to conventional exatecan, with pharmacodynamic biomarkers demonstrating on-target activity of the warhead. The enhanced therapeutic index and efficacy data shown here supports the rationale to progress AVA6103 towards clinical development and supports wider utility of the pre|CISION® platform to target warheads to the tumor while reducing systemic dose-limiting toxicities."

Biomarker • Tumor microenvironment • Oncology • Solid Tumor • CAFs • FAP • TOP1

Avacta Provides Business Update for the First Quarter of 2025 Outlining Progress Against Strategic Objectives (GlobeNewswire) - "AVA6103 is currently in investigational new drug (IND)-enabling studies with a Phase 1 trial anticipated to begin in the first quarter of 2026."

New P1 trial • Oncology

Avacta Therapeutics Announces Presentations at 2025 AACR Annual Meeting (GlobeNewswire) - "The poster presentations will feature data from the Company’s proprietary pre|CISION platform and pipeline of next generation peptide drug conjugates (PDCs), including AVA6000, a PDC consisting of doxorubicin conjugated with a peptide moiety that is specifically cleaved by FAP in the tumor microenvironment via a pharmacokinetics and clinical presentation, and preclinical pharmacology highlights for AVA6103, a PDC comprised of the pre|CISION peptide linked to exatecan. The third presentation will describe detailed analysis of the target fibroblast activation protein-alpha (FAPα), the protease that forms the basis of the pre|CISION platform."

Preclinical • Oncology

Avacta Reports Pipeline Advances with Two Novel Programs at the EORTC-NCI-AACR Molecular Targets Symposium in Barcelona (GlobeNewswire) - "The therapeutic index of exatecan is significantly increased by pre|CISION enabling, specifically the maximum tolerated dose of pre|CISION exatecan (AVA6103) observed is 75 times that of conventional exatecan in a daily dosing regimen; AVA6103 optimizes the bystander effect where the conjugate is only cleaved by FAP-positive fibroblasts, and released exatecan can enter FAP-negative cancer cells; High intratumoral warhead concentrations are seen at 4hr and 24hr timepoints for several pre|CISION exatecan compounds, with up to 50-fold higher warhead concentrations in the tumor versus plasma in a patient-derived xenograft model, AVA6103 inhibits tumor growth, with complete responses noted in a preclinical treated model engineered with human FAP expression (HEK-FAP) tumors. Increased survival was also shown in this model treated with AVA6103 compared with other models with vehicle-treated tumors."

Preclinical • Oncology

The novel peptide drug conjugate AVA6103 is a FAP-enabled preCISION™ medicine which targets Topoisomerase I to the tumor microenvironment via FAP cleavage (EORTC-NCI-AACR 2024) - "Pharmacodynamic biomarkers have also been investigated with the aim to demonstrate on-target activity of the topoisomerase inhibitor in the tumor. The enhanced therapeutic index and data shown here informs future clinical strategy for AVA6103 and supports wider utility of the preCISION™ platform to target warheads to the tumor while reducing systemic dose-limiting toxicities."

Biomarker • Tumor microenvironment • Oncology • TOP1

Avacta Expands its Pipeline with Two Novel Assets Developed Using its pre|CISION Platform (GlobeNewswire) - "Avacta Group plc...today announces the addition of two novel preclinical oncology assets, AVA6103 and AVA7100, to its pipeline of pre|CISION-enabled drug conjugates...Further details of these programs will be released in conjunction with the Company’s two presentations at the EORTC-NCI-AACR Symposium on Molecular Targets and Cancer Therapeutics being held in Barcelona from October 23-25, 2024. The platform and the pipeline will be presented at the investor and analyst R&D Spotlight Event: Focus on pre|CISION, in London on October 30, 2024."

Pipeline update • Oncology

Avacta to Unveil Pipeline Expansion and Novel, Next-Generational Targeted Cancer Therapy Programs at 2024 EORTC-NCI-AACR Symposium (GlobeNewswire) - "Avacta Group plc...today announced that the Company will present new preclinical data on two breakthroughs in the pre|CISION platform in poster sessions at the 2024 EORTC-NCI-AACR Symposium on Molecular Targets and Cancer Therapeutics in Barcelona, Spain from 23-25 October 2024...Avacta will present in vivo data that demonstrates the ability to target and accumulate the active warhead in the tumor microenvironment, resulting in tumor growth inhibition with AVA6103...Avacta will present data supporting that exposure of tumor cell line or fibroblast cell co-cultures to AFFDCs results in drug cleavage, release of the warhead and tumor cell kill as a bystander function."

Preclinical • Oncology • Solid Tumor