Less than 20% of diagnosed breast cancers are designated “triple-negative,” meaning that the affected tissues lack three types of receptors often found in other breast cancer types, but TNBCs are often aggressive with a higher risk of recurrence, metastasis and mortality.

Long-term therapy with estrogen and bazedoxifene alters the microbial composition and activity in the gut, affecting how estrogen is metabolized, a new study in mice found.