The study medicine, elranatamab, is thought to work as a bispecific antibody.
Bispecific antibodies differ to monoclonal antibodies as they can attach to two different types of cells rather than one.
Bispecific antibodies are currently being researched by scientists as potentially effective treatments for different diseases, especially cancers.
Bispecific antibodies with one part that binds to a cancer cell and one part that binds to an immune system cell may cause the immune system to attack and destroy the cancer cell.
Elranatamab, the study medicine in this trial, is thought to work by connecting T-cells (certain immune system cells) to myeloma cells (cancer cells).
Connecting these cells may activate the immune cells, potentially destroying the myeloma cells.