IRX5183 is an orally bioavailable small molecule with a highly selective RARα agonist profile. It is effective in animal models of acute myeloid leukemia and multiple myeloma as monotherapy and in combination with other agents. It has successfully completed phase I clinical trials in 36 patients with solid tumors and leukemias. It has demonstrated activity in acute myeloid leukemia patients as a monotherapy. Current focus of the program is on development of IRX5183 for the treatment of multiple myeloma and acute myeloid leukemias.