1. Objective Response Rate (Complete response, Partial response according to RECIST 1.1). Measuring time: at baseline, 4 weeks after last dose of second cycle and, Months 6, 9 and 12.
2. Overall Survival (Time from randomization until death from any cause or until last news). Measuring time: 12 months.
3. Progression-Free Survival-PFS (time from randomization until objective tumor progression or death).Measuring time: 12 months.
4. Response duration (time from patient’s response until objective tumor progression or death). Measuring time: up to 12 months in patients with objective response.
Immunological response
1. Expansion of effector T lymphocyte populations. Measurement time: at baseline, 24 hours after cycles 1 and 2.
2. Natural killer cells (NK). Measurement time: at baseline, 24 hours after cycles 1 and 2.
3. Regulatory T lymphocytes (Treg). Measurement time: at baseline, 24 hours after cycles 1 and 2.
4. Memory subpopulations. Measurement time: at baseline, 24 hours after cycles 1 and 2.
5. Activation Parameters. Measurement time: at baseline, 24 hours after cycles 1 and 2.
Pharmacokinetic parameters. In stage II:
1. Bioavailability-F (estimated value using Monolix system, with SAEM algorithm combined with Monte Carlo code). Measuring time: after first dose of cycle 1 and, after last dose of cycles 1 and 2 with a design of few data in block of 4 patients where every patient has 14 extractions.
2. Volume of distribution -V (estimated value using Monolix system, with SAEM algorithm combined with Monte Carlo code). Measuring time: after first dose of cycle 1 and, after last dose of cycles 1 and 2 with a design of few data in block of 4 patients where every patient has 14 extractions.
3. Elimination rate constant -k (estimated value using Monolix system, with SAEM algorithm combined with Monte Carlo code). Measuring time: after first dose of cycle 1 and, after last dose of cycles 1 and 2 with a design of few data in block of 4 patients where every patient has 14 extractions.
4. Maximum Plasma Level -Cmax (estimated value using Monolix system, with SAEM algorithm combined with Monte Carlo code). Measuring time: after first dose of cycle 1 and, after last dose of cycles 1 and 2 with a design of few data in block of 4 patients where every patient has 14 extractions.
5. Elimination half-life -T 1/2 (estimated value using Monolix system, with SAEM algorithm combined with Monte Carlo code). Measuring time: after first dose of cycle 1 and, after last dose of cycles 1 and 2 with a design of few data in block of 4 patients where every patient has 14 extractions.
6. Plasma Clearance - Cl (estimated value using Monolix system, with SAEM algorithm combined with Monte Carlo code). Measuring time: after first dose of cycle 1 and, after last dose of cycles 1 and 2 with a design of few data in block of 4 patients where every patient has 14 extractions.
Safety
1. Adverse Events-AE (Occurrence of any AE [Yes, No], description [name of AE], duration [ time from begin date until end date of AE], intensity [Mild, Moderate, Severe, Life-threatening or disabling AE, Death related to AE], gravity [Serious o Not serious, No proceed (NP)], result [recovered, better, persist, sequelae], attitude [without change, dose modification, temporary interruption, definitive interruption], causality relationship [1.Definitive, 2.Very likely, 3.Likely, 4.Possible, 5.No related, 6.Unknown], treatment indicated for AE [medicines indicated for AE], product batch [batch number]). Measuring time: every 1 or 4 hours if needed during the product administration, 4 weeks after last administration and, months 6, 9 and 12.
2. Laboratory test-hematology (values of hemoglobin, hematocrit, leukogram with differential and platelets). Measuring time: at baseline, 4 weeks after last dose and, months 6, 9 and 12.
3. Laboratory test- biochemistry (values of alkaline phosphatase, AST [GOT], ALT [GPT], creatinine, complete and direct bilirubin). Measuring time: at baseline, 4 weeks after last dose and, months 6, 9 and 12.
4. Vitals signs (Blood pressure [mmg], Cardiac frequency [min], temperature [0C]). Measuring time: every 1 or 4 hours if needed during product administration and, months 6, 9 and 12.
5. Cardiac function (Echocardiogram result). Measuring time: at baseline, 4 weeks after finished last cycle.
8. Physical exam (every system will be evaluated in normal, abnormal [according to findings], not done [if no examined]). Measuring time: before product administration and y 1 hour later, months6, 9 and 12.
6. Antibody against Mutein (Present or not). Measuring time: at baseline, 24 hours after cycles 1 and 2.