Participants receive 5-aza as an injection under the skin once a day for 7 days. This will be repeated every 3-8 weeks depending on blood counts and how well bone marrow is recovering. This is defined as 1 treatment cycle. Also during each cycle, participant will take VPA by mouth for 7 days and ATRA by mouth for 5 days. VPA will be given on the same days as 5-aza. ATRA will start on Day 3.