The purpose of this study is to evaluate the safety of an investigational drug, “INCB000928” alone and in combination with ruxolitinib (Jakafi), and to find out what effects, if any, the drug or investigational combination has on people with anemia due to myeloproliferative disorders.
This is an open-label study, which means that both you and your study doctor will know whether you are receiving study drug alone or the investigational combination.