Carfilzomib, Cyclophosphamide and Dexamethasone In Newly Diagnosed Multiple Myeloma Patients

Patients will start induction treatment with Cyclophosphamide given orally at the dose of 300 mg/m2 on days 1, 8, 15. Low dose Dexamethasone will be given orally at the dose of 40 mg on days 1, 8, 15, 22 or 20 mg on days 1-2, 8-9,15-16, 22-23. Carfilzomib = 20 mg/m2 IV once daily on days 1, 2, of cycle 1 only followed by 36 mg/ m2 days 8, 9, 15, 16 in cycle 1, then for all subsequent doses 36 mg/ m2 IV once daily on days 1, 2, 8, 9, 15, 16, followed by 13-day rest period (day 17 through 28). Each cycle will be repeated every 28 days for a total of 9 courses. MANTEINANCE PERIOD At the end of induction phase (9 courses), maintenance phase with Carfilzomib alone IV at 36 mg/ m2 IV on days 1, 2, 15, 16 will start, until progression or intolerance. For patients who show evidence of progression during maintenance phase, the frequency of Carfilzomib can be increased to days 1, 2, 8, 9, 15, 16 at the discretion of the investigator, or the patient may be removed from the study