This study is about testing a new drug called MEN2312 for people with advanced breast cancer. Advanced breast cancer means the disease has spread and cannot be fully cured. MEN2312 is being tested because it might help stop the cancer from growing. MEN2312 works by blocking a part of the cell called lysine acetyltransferase 6 (KAT6), which can be involved in cancer growth.

Key Points:

• The study is only for adults who have tried other treatments without success.
• Participants must have certain genetic changes in their tumor tissue.
• People with severe brain involvement or major organ issues cannot join.

Participants can have had up to 6 prior treatments, including certain chemotherapies. Before joining, doctors will check if this is a good fit. If you have breast cancer that has not responded to other treatments and meets the study's criteria, you might consider participating. Always discuss with your doctor before joining any study to understand the benefits and risks involved. This study offers a chance to try a new treatment option.