Description:
This phase I trial studies the side effects and best dose of vorinostat when given together with fludarabine phosphate, clofarabine, and busulfan in treating patients with acute leukemia that is under control (remission) or has returned (relapse) undergoing donor stem cell transplant. Vorinostat may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as fludarabine phosphate, clofarabine, and busulfan, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving vorinostat together with fludarabine phosphate, clofarabine, and busulfan before a donor stem cell transplant may be a better treatment for patients with acute leukemia.