AZD9496 maleate is primarily used in the field of oncology research, particularly in the study and treatment of hormone receptor-positive breast cancer. It functions as a selective estrogen receptor degrader (SERD), which means it targets and degrades estrogen receptors in cancer cells, thereby inhibiting their growth and proliferation. This makes it a promising candidate for patients who have developed resistance to traditional hormone therapies. Its application is also being explored in preclinical studies to understand its efficacy in other types of cancers that are driven by estrogen receptor signaling. Additionally, AZD9496 maleate is utilized in combination therapies to enhance its anti-tumor effects and improve patient outcomes. Research continues to focus on optimizing its therapeutic potential and reducing adverse effects.