Merck & Co Inc, whose checkpoint antibody Keytruda (pembrolizumab) already has 20 approved indications, received a further endorsement on 18 June with US Food and Drug Administration approval for the treatment of metastatic small cell lung cancer. Keytruda is already approved as a first-line treatment for non-small cell lung cancer. The new indication means the antibody can be used as a monotherapy for patients with small cell lung cancer whose disease has progressed on or after platinum-based chemotherapy and at least one other prior line of therapy.
