Clinical Study on the Safety and Efficacy of BCMA-CART±ASCT in Treating Young Multiple Myeloma Patients

This trial is studying the safety and effectiveness of BCMA-CAR T-cell therapy — an advanced immune cell treatment that targets a protein on myeloma cells — with or without a stem cell transplant in young women with multiple myeloma. Multiple myeloma is a blood cancer that affects plasma cells in the bone marrow. **You may be eligible if...** - You are a woman between 18 and 55 years old - You have been confirmed to have multiple myeloma by testing - Your organ function (liver, kidneys, blood clotting) meets required levels - You are willing to participate and provide informed consent **You may NOT be eligible if...** - You are male (this study is specifically in young women) - You are over 55 years old - You have severe organ dysfunction - You are pregnant or breastfeeding - You have an active uncontrolled infection or another serious illness Talk to your doctor to see if this trial is right for you.