NEW YORK, Aug. 11, 2025 (GLOBE NEWSWIRE) -- IO Biotech (Nasdaq: IOBT) today announces topline results from the pivotal Phase 3 trial of its investigational, immune-modulatory, off-the-shelf therapeutic cancer vaccine, Cylembio (imsapepimut and etimupepimut, adjuvanted). The trial evaluated Cylembio in combination with Merck's anti-PD-1 therapy, KEYTRUDA (pembrolizumab), vs. pembrolizumab alone as a first-line treatment in 407 patients with unresectable or metastatic (advanced) melanoma. In the study, Cylemb ...

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]