Roche announced that the US Food and Drug Administration (FDA) has approved Herceptin Hylecta (trastuzumab and hyaluronidase-oysk) for subcutaneous (under the skin) injection to treat certain people with HER2-positive early breast cancer (node-positive, or node-negative and ER/PR-negative or with one high-risk feature) in combination with chemotherapy and HER2-positive metastatic breast cancer in combination with paclitaxel or alone in people who have received one or more chemotherapy regimens for metastatic disease.