A small, early trial of a vaccine that mobilizes the immune system to battle advanced kidney cancers appears successful, researchers report.

A small, early trial of a vaccine that mobilizes the immune system to battle advanced kidney cancers appears successful, researchers report. The "personalized cancer vaccines" (PCVs) used by the nine patients in the trial were targeted to genes specific to their tumors,

Doctors at Dana-Farber say this personalized vaccine can be given after surgery to remove a tumor and train the body’s immune system to eliminate tumor cells.