Immune therapy shows promise in breaking down aggressive breast cancer

Drugmakers are honing in on which cancer patients will benefit from new immune therapies — and finding many more than skeptics had thought.For the first time, a clinical trial showed that a treatment with one of the new generation of drugs designed to unleash the body’s own immune system against tumors can help some women with the most aggressive type of breast cancer live longer. The study was unveiled by Roche Holding at Europe’s biggest cancer conference.These medicines, led