Incyte Announces FDA Approval of Jakafi XR™ (ruxolitinib) Extended-Release Tablets for the Treatment of Myelofibrosis, Polycythemia Vera and Graft-Versus-Host DiseaseContributed by: Business WireLogoImagesTagsOncologyHealthFDAStem CellsPharmaceuticalCardiologyBiotechnologyJakafi XR