
By testing tumors, researchers hoped to identify women who could avoid chemotherapy without increasing their risk of a cancer recurrence.
Voisin/Phanie/Science Source
A major study about the best way to treat early-stage breast cancer reveals that “precision medicine” doesn’t provide unambiguous answers about how to choose the best therapy.
“Precision doesn’t mean certainty,” says David Hunter, a professor of cancer prevention at Harvard’s T.H. Chan School of Public Health.
That point is illustrated in a large study published Wednesday in the New England Journal of Medicine, involving decisions about chemotherapy. Continue reading