The recent emergence of immunotherapy has marked a sea change in research and care for many forms of cancer, bringing new hope to patients and families around the world. For those who respond to treatment, the results can be dramatic. Activation of a patient’s immune system against cancer can kill or shrink tumors and, in some cases, lead to complete remission.

Despite significant advances, only a minority of individuals benefit from immunotherapy, and the reasons why remain unclear.

Link to full Harvard Medical School release on study co-authored by MGH investigator Mikael Pittet.