Doctors are reporting a new gain in breast cancer treatment.
This undated photo provided by Daiichi Sankyo and AstraZeneca in June 2022 shows a vial and packaging for their Enhertu, an antibody-chemotherapy drug administered intravenously.
Until now, breast cancers have been categorized as either HER2-positive — the cancer cells have more of the protein than normal — or HER2-negative. Doctors reporting the advance Sunday said it will make “HER2-low” a new category for guiding breast cancer treatment. In the new study, the drug lengthened the time patients lived without their cancer progressing and improved survival compared with patients given standard chemotherapy.
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