Conditions: Melanoma
Keywords: Melanoma Neoplasm CNTO 95 Dacarbazine Intetumumab
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 144
Healthy volunteers: no

Brief summary:
The purpose of this study is to evaluate the safety and effectiveness of the intetumumab, alone and in combination with dacarbazine, in patients with stage 4 melanoma.

Detailed description:
This is a Phase 1/2, multi-center, randomized (the study medication is assigned by chance) study. This study will be conducted in 2 Phases (Phase 1 and Phase 2). Phase 1 of this study will be non-randomized, open-label (all people know the identity of the intervention) and dose-escalation phase. It includes screening period and treatment period, which consists of 2 parts (Part 1 and Part 2). In Part 1, participants will receive 1 of 3 single dose levels of intetumumab \[3 milligram per kilogram (mg/kg), 5 mg/kg or 10 mg/kg\]. Part 2 will include 2 dose cohorts: dacarbazine plus intetumumab (5 mg/kg) or dacarbazine plus intetumumab (10 mg/kg). Phase 2 of this study will be randomized, blinded (neither physician nor participant knows the intervention which the participant will receive) and controlled (an inactive substance and other medication is compared with a study medication to test whether the medication has a real effect in this clinical study). This phase of the study will include screening period, treatment period (8 cycles of treatment with every cycle once in 3 weeks) and follow-up period (24 weeks). During the treatment period, participants will be randomly assigned to 1 of 4 treatment groups, Group 1: dacarbazine plus placebo, Group 2: intetumumab (5 mg/kg), Group 3: intetumumab (10 mg/kg) and Group 4: dacarbazine plus intetumumab. Randomization will be further based on the site of metastases and Eastern Cooperative Oncology Group performance status at Baseline. Single-medication intetumumab treatment groups will be open-label, while the dacarbazine plus intetumumab or placebo groups will be blinded. The total duration of the Phase 2 of this study will be up to 52 weeks or up to 76 weeks in case of extended dosing (extended administrations \[up to 8 additional cycles\] of the same assigned treatment will be allowed for participants that are responding to therapy with stable disease or better). Participants will be assessed for incidence of dose limiting toxicities, pharmacokinetics and tumor responses. Participants' safety will be monitored throughout the study.

Arms:
arm 1: Intetumumab will be administered at the dose of 3 milligram per kilogram (mg/kg) as intravenous infusion (a fluid or a medicine delivered into a vein by way of a needle) over a period of 2 hours (hr) (± 15 minutes) once every 3 weeks until the occurrence of dose limiting toxicities (DLTs). If after an evaluation of the preliminary single-dose pharmacokinetics, receptor saturation is not observed at the 3 mg/kg or 5 mg/kg dose level, that dose of intetumumab will be discontinued in Part 1 and participants will be treated at the highest, documented safe dose level at which receptor saturation is observed. arm 2: Intetumumab will be administered at the dose of 5 mg/kg as intravenous infusion over a period of 2 hr (± 15 minutes) once every 3 weeks until the occurrence of DLTs. If after an evaluation of the preliminary single-dose pharmacokinetics, receptor saturation is not observed at the 3 mg/kg or 5 mg/kg dose level, that dose of intetumumab will be discontinued in Part 1 and participants will be treated at the highest, documented safe dose level at which receptor saturation is observed. arm 3: Intetumumab will be administered at the dose of 10 mg/kg as intravenous infusion over a period of 2 hr (± 15 minutes) once every 3 weeks until the occurrence of DLTs. arm 4: Intetumumab will be administered at the dose of 5 mg/kg as intravenous infusion over a period of 2 hr (± 15 minutes) once every 3 weeks for 8 cycles until no evidence of disease progression or unacceptable toxicity. If participants respond to therapy with stable disease (SD) or better, they will be considered eligible to receive up to 8 cycles of extended administrations. Commercially available dacarbazine will be administered at the dose of 1000 milligram per meter-square (mg/m\^2) intravenously over a period of 60 minutes (± 30 minutes) prior to intetumumab infusion. arm 5: Intetumumab will be administered at the dose of 10 mg/kg as intravenous infusion over a period of 2 hr (± 15 minutes) once every 3 weeks for 8 cycles until no evidence of disease progression or unacceptable toxicity. If participants respond to therapy with SD or better, they will be considered eligible to receive up to 8 cycles of extended administrations. Commercially available dacarbazine will be administered at the dose of 1000 mg/m\^2 intravenously over a period of 60 minutes (± 30 minutes) prior to intetumumab infusion. arm 6: Placebo will be administered intravenously over a period of 2 hr (±15 minutes). Commercially available dacarbazine will be administered at the dose of 1000 mg/m\^2 intravenously over a period of 60 minutes (± 30 minutes) prior to placebo infusion. In case participants are unable to tolerate dacarbazine even after 2 dose reductions, they will be given the option to continue with 10 mg/kg intetumumab alone. arm 7: Intetumumab will be administered at the dose of 5 mg/kg as intravenous infusion over a period of 2 hr (± 15 minutes) once every 3 weeks for 8 cycles until no evidence of disease progression or unacceptable toxicity. If participants respond to therapy with SD or better, they are considered eligible to receive up to 8 cycles of extended administrations. arm 8: Intetumumab will be administered at the dose of 10 mg/kg as intravenous infusion over a period of 2 hr (± 15 minutes) once every 3 weeks for 8 cycles until no evidence of disease progression or unacceptable toxicity. If participants respond to therapy with SD or better, they are considered eligible to receive up to 8 cycles of extended administrations. arm 9: Intetumumab will be administered at the dose of 10 mg/kg as intravenous infusion over a period of 2 hr (± 15 minutes) once every 3 weeks for 8 cycles until no evidence of disease progression or unacceptable toxicity. If participants respond to therapy with SD or better, they are considered eligible to receive up to 8 cycles of extended administrations. Commercially available dacarbazine will be administered at the dose of 1000 mg/m\^2 intravenously over a period of 60 minutes (± 30 minutes) prior to intetumumab infusion.

Interventions: intervention 1: Intetumumab intervention 2: Dacarbazine intervention 3: Placebo
Intervention descriptions: intervention 1: Intetumumab will be administered at the dose of 3 milligram per kilogram (mg/kg) as intravenous infusion (a fluid or a medicine delivered into a vein by way of a needle) over a period of 2 hours (hr) (± 15 minutes) once every 3 weeks until the occurrence of dose limiting toxicities (DLTs). In Phase 2, intetumumab (5 mg/kg or 10 mg/kg) will be administered for 8 cycles until no evidence of disease progression or unacceptable toxicity. If a participant responds to therapy with stable disease (SD) or better, the participant will be eligible to receive up to 8 cycles of extended administrations. intervention 2: Commercially available dacarbazine will be administered intravenously over a 60-minute period (+30 minutes/-30 minutes) and prior to the intetumumab/placebo infusion. In case participants are unable to tolerate dacarbazine even after 2 dose reductions, they will be given the option to continue on intetumumab alone. intervention 3: Placebo will be administered intravenously over a period of 2 hours (+15 minutes/-15 minutes).

Protocol document: