Multiple myeloma, Stem cell/bone marrow transplant. He has focused his laboratory and clinical research studies on multiple myeloma. He has developed laboratory and animal models of the tumor in it is microenvironment which have allowed for both identification of novel targets and validation of novel targeted therapies, and has then rapidly translated these studies to clinical trials culminating in FDA approval of novel targeted therapies. His paradigm for identifying and validating targets in the tumor cell and its milieu has transformed myeloma therapy and markedly improved patient outcome.