Last updated on November 2019

Pembrolizumab and Recombinant Interleukin-12 in Treating Patients With Solid Tumors

Brief description of study

This phase I trial studies the side effects and best dose of pembrolizumab and recombinant interleukin-12 in treating patients with solid tumors. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Recombinant interleukin-12 may kill tumor cells by blocking blood flow to the tumor and by stimulating white blood cells to kill tumor cells. Giving pembrolizumab and recombinant interleukin-12 may work better than giving pembrolizumab alone in treating patients with solid tumors.

Detailed Study Description


I. Establish the maximum tolerated dose (MTD) and the recommended phase II dose (RP2D) of recombinant human interleukin (rhIL)-12 in combination with MK-3475 (pembrolizumab).


I. Evaluate the safety of the regimen by continuously monitoring adverse events that will be documented utilizing Common Terminology Criteria for Adverse Events (CTCAE) version (v).5.0.

II. Evaluate the overall response rate (Response Evaluation Criteria in Solid Tumors [RECIST] v.1.1) and the progression free survival of patients enrolled on the study.

III. Measure CD8+ T cell infiltration by immunohistochemistry in tumor biopsies obtained at baseline, after one week of rhIL-12 and after 2 cycles of MK-3475 (pembrolizumab) in combination with rhIL-12.

IV. Conduct exploratory translational laboratory correlative studies utilizing banked biospecimens (tumor and blood) obtained at baseline and during therapy.

OUTLINE: This is a dose-escalation study of recombinant interleukin-12.

Patients receive recombinant interleukin-12 subcutaneously (SC) on days 2, 5, 9, and 12 and pembrolizumab intravenously (IV) over 30 minutes on day 8 of cycle 1 and day 1 of subsequent cycles. Treatment continues for 28 days for cycle 1 and repeats every 21 days for subsequent cycles for up to 8 cycles in the absence of disease progression or unacceptable toxicity. Patients then receive recombinant interleukin-12 SC on days 2, 5, 9, and 12. Treatment repeats every 21 days for up to 8 cycles in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up for 3 years.

Clinical Study Identifier: NCT03030378

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