The effectiveness of drugs like pembro varies with cancer type and other factors. Here's a recent study where patients exhibited only a 56% response rate: http:

The effectiveness of drugs like pembro varies with cancer type and other factors. Here's a recent study where patients exhibited only a 56% response rate: http://www.nejm.org/doi/full/10.1056/NEJMoa1603702 http://www.nejm.org/doi/full/10.1056/NEJMoa1603702 The field is extremely promising and it's worth exploring fully, especially considering that even good responders can suffer relapses due to subclonal evolution.