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Immunotherapy Shows Modest Progress Against Breast Cancer

For the first time, one of the new immunotherapy drugs has shown promise against breast cancer in a large study that combined it with chemotherapy to treat an aggressive form of the disease. But the benefit for most women was small, raising questions about whether the treatment is worth its high cost and side effects. Results were discussed Saturday at a cancer conference in Munich and published by the New England Journal of Medicine. Drugs called checkpoint inhibitors have...

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