The breast cancer drugs market is rapidly expanding, driven by targeted therapies for HER2-positive cancers. The global market, valued at USD 32.93 billion in 2023, is projected to reach USD 78.61 billion by 2033. North America leads with a 38.61% revenue share. Key players include Oncolytics Biotech, GSK, AstraZeneca, AbbVie, and Cardiff Oncology.