“We are very pleased to mark the next stage of FB849’s development with this exciting collaboration. We are hopeful that combining FB849 with KEYTRUDA may induce an effective anti-tumor response and show an additive benefit for patients with advanced solid tumors,” said Jamie Jae Eun Kim, Ph.D., Founder and Chief Executive Officer of 1ST Biotherapeutics. “This collaboration will play an important role in the advancement of this program and marks further validation of our differentiated drug discovery and development approach. We will continue to leverage our expertise and dedication to bring innovative therapeutics to patients with high unmet medical needs.”