Patients are expected to receive at least 1 cycle (6 weeks) of study treatment unless an unacceptable drug reaction occurs. Patients will receive a second cycle of treatment as long as treatment is tolerated. Response assessment will be performed every 6 weeks (three doses/cycle of study drug) including clinical and radiological assessment. Secondary measures including documentation of total equivalent steroid dose, length of time on steroids, and quality of life using the modified McMaster Health Instrument scale will also be collected while on treatment and 30 days after finishing treatment.