
Personalized vaccines for a type of brain cancer mounted an immune system response against the tumors in a small number of patients, according to data from two new studies, an early indication that immunotherapy might hold some promise for targeting the difficult-to-treat cancers.
The studies, published Wednesday in the journal Nature, underscore how wily glioblastoma, or GBM, is in evading attacks by the immune system on tumors: The patients did not see the course of their disease change, and even patients who generated an immune response died from their cancers.
Still, experts said, the early-stage clinical trials suggest researchers may be able to find ways to improve immunotherapies and the ways in which they are delivered to develop effective cancer vaccines.