tokens: Neurological toxicity occurred in 8 / 219 patients treated with fludarabine ( FAMP ) , 30 mg / m2 per day and cytosine arabinoside ( Ara - C ) , 0 . 5 g / m2 per hour for 2 - 6 hours for 5 days , for new or relapsed acute leukemia or myelodysplasia .