1. Patients with MDS, chronic myelomonocytic leukemia (CMML), AML or biphenotypic or bilineage leukemia who have failed prior therapy. Patients with MDS or CMML should have failed prior therapy with a hypomethylating agent and/or with lenalidomide. Patients with AML should have failed any prior induction therapy or have relapsed after prior therapy, or be previously untreated and unable or unwilling to receive conventional chemotherapy (e.g., patients age >/=65 years). Patients with MDS or CMML who received therapy with a hypomethylating agent and progress to AML are eligible at the time of diagnosis of AML regardless any prior therapy for AML. The WHO classification will be used for AML. Patients with MDS, CMML or AML who have received no prior therapy are eligible if not candidates to receive or refuse standard therapy.