Indatuximab Ravtansine (BT-062) is an immune conjugate, consisting of a monoclonal antibody to which a highly effective cytotoxic maytansien derivative (DM4) is coupled. The immune conjugate technology, developed by ImmunoGen, Inc, is used for toxin conjugation. The antibody is directed against the CD138 receptor, which is over-expressed on multiple myeloma cells and on other cells of various types of cancer: solid tumors.
After the conjugate is absorbed into the target cell, DM4 is released and exerts its cytotoxic activity so that the tumor cell is killed. This combination of high effectiveness and specificity with low systemic toxicity distinguishes BT-062 from most therapies currently used in oncology.