Intensified Azacitidine in High Risk Myelodysplastic Syndrome (MDS)

"Treatment will consist of azacitidine 75mg/m2/d for 5 days every 14 days for 4 cycles.~* Patients achieving CR or PR will be then treated with 4 cycles of azacitidine 75mg/m2/d for 5 days every 21 days followed by cycles of azacitidine 75mg/m2/d for 7 days administered every 28 days (cycles 9 and beyond), to be continued until progression/relapse or toxicity arises.~* Patients not obtaining CR or PR after the initial 4 cycles of azacitidine-14 will continue to receive azacitidine 75mg/m2/d for 5 days every 14 days for 4 additional cycles (cycles 5 to 8). If they achieve CR, PR or HI after 8 cycles, they will then be treated with azacitidine 75mg/m2/d for 5 days every 21 days (cycles 9 to 12) and subsequently cycles of azacitidine 75mg/m2/d for 7 days administered every 28 days (cycles 13 and beyond) until progression/relapse or toxicity arises.~* Patients not obtaining CR, PR or HI after 8 cycles of azacitidine-14 will go off-study."