RATIONALE: Bortezomib and midostaurin may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as mitoxantrone hydrochloride, etoposide, and cytarabine, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving bortezomib and midostaurin together with combination chemotherapy may kill more cancer cells.