Summary of IO Biotech FY Conference Call Company Overview - **Company**: IO Biotech (NasdaqGS: IOBT) - **Focus**: Development of SilentBio™, an immune modulatory cancer vaccine targeting advanced melanoma and other cancers Key Industry Insights - **Market Opportunity**: The market for first-line advanced melanoma is significant, with 15,000 new diagnoses annually in the US and a growth rate of 9% per year, representing a billion-dollar opportunity [4][11] - **Unmet Need**: 50% of patients treated with current standard care do not benefit, highlighting the need for better treatment options [4][11] Core Product Insights - **SilentBio™**: - Combination of IO102 and IO103, showing promising results in clinical trials - Demonstrated a median progression-free survival (PFS) of 19.4 months compared to 11.0 months for the control group [3][7] - Hazard ratio of 0.77 and a p-value of 0.056, indicating a near statistical significance [3][7] - Improved PFS observed across all pre-specified subgroups without added systemic toxicity [3][9] Clinical Trial Results - **Phase 3 Trial**: - Conducted in over 100 centers globally with 407 patients enrolled [6][7] - Notable results include: - Median PFS of 24.8 months for patients without prior anti-PD-1 exposure [8] - Dramatic PFS improvement in PD-L1 negative patients, with 16.6 months versus 3 months in the control group [8] - Overall survival (OS) trends favoring the combination arm, with a hazard ratio of 0.79 [9][10] Regulatory and Market Readiness - **FDA Engagement**: - Preparing for a Biologics License Application (BLA) submission by the end of 2025 [4][16] - Discussions with the FDA are ongoing, with a meeting scheduled for Q3 2025 [4][20] - **Manufacturing and Distribution**: - Secured supply chain and commercial-scale manufacturing in place [5][11] Future Pipeline and Expansion - **Additional Trials**: - Two Phase 2 trials for SilentBio™ in lung and head and neck cancers are underway [13] - Plans to expand into earlier clinical stages and other indications [16][17] - **New Targets**: - Development of IO112 (arginase) and IO170 (TGF-beta) for broader indications [15][17] Financial Position - **Cash Reserves**: - Cash balance of $28 million as of Q2 2025, sufficient to fund operations into Q1 2026 [20] Conclusion - IO Biotech is positioned to potentially set a new standard in the treatment of advanced melanoma with SilentBio™, backed by promising clinical data and a robust pipeline for future growth [11][12]

Cylembio (IO102-IO103) Development and Clinical Trials - Cylembio, in combination with pembrolizumab, has Breakthrough Therapy Designation for advanced melanoma[11, 12] - Phase 3 pivotal trial in advanced melanoma with PFS as the primary endpoint, readout expected in Q3 2025[12, 23, 27] - Phase 1/2 trial (MM1636) showed 80% ORR, 50% CRR, and 255 months mPFS in melanoma[13, 55] - Completed enrollment of 407 patients in the Phase 3 trial in December 2023[27, 55] - A Phase 2 neoadjuvant/adjuvant basket study is fully enrolled[57] Pipeline and Platform - T-win platform delivers investigational, immune-modulatory, off-the-shelf therapeutic cancer vaccines[11, 35, 66] - The company has 3 pipeline programs, including IO170 targeting Melanoma, SCCHN, NSCLC, and other cancers[11, 35] - IO112, targeting Arginase 1, is a next pipeline candidate expected to enter clinical development, with an IND filing planned in 2025[35, 63, 64] Market and Financial Outlook - The global melanoma market is expected to reach >$13 billion by 2030[15] - The US melanoma market was approximately $45 billion in 2023, growing at 9%[32] - The global NSCLC market is expected to reach approximately $60 billion by 2030[36, 37] - The global SCCHN market is expected to reach approximately $5 billion by 2030[40]

Core Insights - IO Biotech presented new preclinical data for its dual-antigen and TGF-β-directed vaccines at the AACR Annual Meeting 2025, highlighting their potential to reshape the tumor microenvironment and enhance anti-tumor immunity [1][2] Company Overview - IO Biotech is a clinical-stage biopharmaceutical company focused on developing immune-modulatory, off-the-shelf therapeutic cancer vaccines using its T-win® platform, which aims to activate T cells against both tumor cells and immune-suppressive cells [4] - The company is advancing its lead investigational cancer vaccine candidate, Cylembio® (IO102-IO103), which has received Breakthrough Therapy Designation from the FDA for treating advanced melanoma in combination with Merck's KEYTRUDA® [4] Vaccine Candidates - IO102-IO103, a dual-antigen vaccine targeting IDO1+ and PD-L1+ cells, demonstrated strong T-cell responses and modulated the tumor microenvironment in mouse models, indicating a potentially synergistic mechanism compared to conventional PD-1 or PD-L1 inhibitors [7] - IO170, targeting TGF-β, showed significant tumor growth inhibition in breast and prostate cancer mouse models, leading to increased infiltration of vaccine-specific T cells and reshaping the tumor microenvironment to favor immune activation [7]