At a glance
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An Exploratory Study of Nivolumab With or Without Ipilimumab According to the Percentage of Tumoral CD8 Cells in Participants With Advanced Metastatic Cancer
In Brief
A Phase 2 clinical trial evaluating Nivolumab Monotherapy, Nivolumab and Ipilimumab and Combination for Metastatic Cancer, and 2 other interventions for Advanced Metastatic Cancer and Advanced Prostate Cancer. Completed, enrolled 100 participants across 6 sites.
Detailed Summary
This is an open-label, exploratory study to evaluate nivolumab with or without ipilimumab based on percentage of tumoral CD8 cells at the time of treatment in participants with varying advanced solid tumors. Participants who have a tumor with ≥ 15% CD8 cells (classified as CD8 high) will receive nivolumab monotherapy, and participants who have a tumor with \< 15% CD8 cells (classified as CD8 low) will receive ipilimumab in combination with nivolumab.
Study Details
Timeline
Interventions
Single-agent nivolumab will be administered at 360 mg IV Q3W. Participants who continue to show clinical benefit after the first disease assessment will receive nivolumab 480 mg IV Q4W until PD or intolerable toxicity.
For nivolumab and ipilimumab combination therapy, nivolumab will be administered at 360 mg IV Q3W, and ipilimumab will be administered at 1 mg/kg IV Q3W for the first 2 doses and then Q6W for the 3rd and 4th doses, followed by single-agent nivolumab 480 mg IV Q4W until PD or intolerable toxicity.
For nivolumab and ipilimumab combination therapy, CD8 low arm, approximately 10 participants will be randomly allocated into 1 of 2 cohorts, using different doses of ipilimumab administered in 6-week cycles. Participants assigned to Prostate Cohort A will receive nivolumab 1 mg/kg Q3W and ipilimumab 3 mg/kg every 6 weeks (Q6W) for 2 cycles, then nivolumab maintenance 480 mg Q4W until PD or intolerable toxicity. If the safety profile of Prostate Cohort B is deemed unacceptable, an additional 10 participants will be enrolled in Prostate Cohort A.
For nivolumab and ipilimumab combination therapy, CD8 low arm, approximately 10 participants will be randomly allocated into 1 of 2 cohorts, using different doses of ipilimumab administered in 6-week cycles. Participants assigned to Prostate Cohort B will receive nivolumab 1 mg/kg Q3W and ipilimumab 5 mg/kg Q6W for 2 cycles, then nivolumab maintenance 480 mg Q4W until PD or intolerable toxicity. If Prostate Cohort B is determined to have a tolerable safety profile, an additional 10 participants will be enrolled to receive nivolumab 1 mg/kg Q3W and ipilimumab 5 mg/kg Q6W for 2 cycles, then nivolumab maintenance 480 mg Q4W until PD or intolerable toxicity.