LAVA Therapeutics NV (NASDAQ:LVTX) has entered into a clinical trial collaboration and supply agreement with Merck & Co Inc (NYSE:MRK) to evaluate its anti-PD-1 therapy Keytruda (pembrolizumab) in combination with LAVA-1207 in patients with therapy refractory metastatic castration-resistant prostate cancer. Under the terms of the agreement, Merck will provide pembrolizumab for the dose escalation and expansion phases of LAVA’s ongoing Phase 1/2a study of LAVA-1207, with the combination arm expec