Keytruda, an immuno-oncology drug, is aiming to expand indications for early lung cancer in Korea. According to the related industry, MSD Korea is a non-small adult stage 1B (tumor size of 4 cm or more), stage 2 or 3A after surgical excision of the PD-1 inhibitor Keytruda (pembrolizumab) and use of a platinum complex chemotherapy agent. A post-application for cell lung cancer adjuvant therapy was submitted and review is currently underway. The indication received final approval from the US FDA in January. The efficacy of Keytruda in adjuvant therapy for early non-small cell lung cancer was confirmed through a phase 3 clinical trial, KEYNOTE-091. According to the study, Keytruda reduced the risk of disease recurrence