‘Cancer vaccines’ offer new way to fight disease

Treatment using immune system to battle 3 types of cancer shows promise

ORLANDO, Fla. - First there was surgery, then chemotherapy and radiation. Now, doctors have overcome 30 years of false starts and found success with a fourth way to fight cancer: using the body’s natural defender, the immune system.

The approach is called a cancer vaccine, although it treats the disease rather than prevents it.

At a cancer conference Sunday, researchers said one such vaccine kept a common form of lymphoma from worsening for more than a year. That’s huge in this field, where progress is glacial and success with a new treatment is often measured in weeks or even days.