<qa>  What is the maximum time period for the patient to receive at least 75 of their prescribed regimenTo be considered evaluable for safety, the patient must receive at least 75 of their prescribed regimen per cycle for 4 consecutive cycles with a cycle of therapy defined as 28 days in the absence of disease progression or unacceptable toxicity. Patients who progress at 9 weeks evaluation or later but before completing 4 cycles and who have only experienced Grade 1 toxicities excluding alopecia will also be considered evaluable for safety. 