The duration of the treatment is approximately 9 months. This length of time is required to complete 9 courses of CCd. At the end of the first stage (19 patients), the trial will be temporarily stopped until all 19 patients complete the toxicity and efficacy evaluation (3 cycle): if there are more than 7 responses and less than 8 toxicities, a further group of 34 patients (total=53) will be enrolled. Otherwise, the trial will be definitively stopped or the DSMC will recommend testing other doses of the drugs.