Pfizer Inc. announced new data from a randomized Phase 2 study of glasdegib (PF-04449913), an oral, smoothened (SMO) inhibitor, showing the addition of glasdegib to low-dose cytarabine (LDAC) significantly increased overall survival (OS) when compared to LDAC alone in patients with acute myeloid leukemia (AML) or high-risk myelodysplastic syndrome (MDS) who were ineligible for intensive chemotherapy (HR: 0.501, 80% CI: 0.384, 0.654, one-sided log rank p-value 0.0003). Glasdegib is the first SMO inhibitor to show clinical benefit in this patient population. These data were presented today at the 58th American Society of Hematology (ASH) Annual Meeting and Exposition in San Diego, CA.