The sobering truth about cancer immunotherapy

Imagine being able to offer hope to people with cancers that were once thought untreatable. Checkpoint immune drugs like pembrolizumab (Keytruda) and nivolumab (Opdivo) are heralding this new era in cancer treatment. Some people taking these drugs can see their cancer completely disappear; there’s nothing left to see on their x-rays.

We rightly celebrate these successes, but must face the sobering truth that only a minority of people experience these dramatic benefits. Decades of research have helped us reach this point. Now scientists and doctors