IO Biotech Announces Clinical Improvement in Progression Free Survival Demonstrated in Pivotal Phase 3 Trial of Cylembio® plus KEYTRUDA® (Pembrolizumab) for the Treatment of First-line Advanced Melanoma, but Statistical Significance Narrowly Missed

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 ...