Learn about multiple myeloma , a cancer of plasma cells. Discover symptoms, prognosis, treatments, and how it affects bone marrow and overall health in 2024. Multiple myeloma is a cancer that forms in a type of white blood cell called a plasma cell. Healthy plasma cells help fight infections by making proteins called antibodies. Antibodies find and attack germs. In multiple myeloma , cancerous plasma cells build up in bone marrow. Background What is myeloma ? Myeloma , also known as multiple myeloma , is a cancer arising from plasma cells, a type of white blood cell which is made in the bone marrow. Bone marrow is the ‘spongy’ material found in the centre of the larger bones in the body. The bone marrow is where all blood cells are made. Plasma cells form part of your immune system. Normal plasma cells produce antibodies, also called immunoglobulins, to help fight infection. In myeloma , these plasma cells become ... Multiple myeloma is a type of blood cancer. Read about the basics of the disease, including what causes it, how it makes you feel, stages of the disease, and other important facts you need to...