Durvalumab and Tremelimumab With or Without High or Low-Dose Radiation Therapy in Treating Patients With Metastatic Colorectal or Non-small Cell Lung Cancer

Official Title

A Phase 2 Study of MEDI4736 (Durvalumab) and Tremelimumab Alone or in Combination With High or Low-Dose Radiation in Metastatic Colorectal and NSCLC

Summary:

This randomized phase II trial studies the side effects of durvalumab and tremelimumab and to see how well they work with or without high or low-dose radiation therapy in treating patients with colorectal or non-small cell lung cancer that has spread to other parts of the body. Monoclonal antibodies, such as durvalumab and tremelimumab, may interfere with the ability of tumour cells to grow and spread. Radiation therapy uses high energy x-rays to kill tumour cells and shrink tumours. Giving durvalumab and tremelimumab with radiation therapy may work better in treating patients with colorectal or non-small cell lung cancer.

Trial Description

Primary Outcome:

  • Overall response rate as determined by Response Evaluation Criteria in Solid Tumours (RECIST) 1.1
Secondary Outcome:
  • Progression-free survival (PFS)
  • Overall survival (OS)
  • Objective response per immune-related response (irORR) criteria
  • Incidence of adverse events assessed by Common Terminology Criteria for Adverse Events version 4.0
  • Local control rate and abscopal response rates
  • Prognostic effect of PD-L1 expression
  • Prognostic effect of T-cell infiltration
PRIMARY OBJECTIVES:
I. To assess safety and tolerability of combined checkpoint blockade with MEDI4736 (durvalumab) and tremelimumab alone or with high or low-dose radiation in non-small cell lung cancer (NSCLC). (NSCLC Cohort) II. To compare the overall response (excluding the irradiated lesion[s]) between combined checkpoint blockade with MEDI4736 and tremelimumab alone or combined checkpoint blockade with low or high dose radiation. (NSCLC Cohort) III. To assess safety and tolerability of combined checkpoint blockade with MEDI4736 and tremelimumab with high or low-dose radiation. (Colorectal Cohort) IV. To determine the overall response rate (excluding the irradiated lesion[s]) with combined checkpoint blockade with MEDI4736 and tremelimumab with either low or high dose radiation. (Colorectal Cohort) SECONDARY OBJECTIVES:
I. To estimate median progression-free survival and overall survival. (NSCLC Cohort) II. To determine local control within the irradiated field(s) and abscopal response rates. (NSCLC Cohort) III. To evaluate associations between PD-L1 expression as well as levels of infiltrating CD3+, CD8+ T-cells and overall response. (NSCLC Cohort) IV. To explore changes in PD-L1 expression, circulating T-cell populations, T-cell infiltration, ribonucleic acid (RNA) expression, spatial relationship of immune markers, and mutational burden as a result of low or high dose radiation. (NSCLC Cohort) V. To estimate median progression-free survival and overall survival. (Colorectal Cohort) VI. To determine local control within the irradiated field and abscopal response rates. (Colorectal Cohort) VII. To evaluate associations between PD-L1 expression as well as levels of infiltrating CD3+ CD8+ T-cells and overall response. (Colorectal Cohort) VIII. To evaluate changes between PD-L1 expression as well as levels of infiltrating CD3+, CD8+ T-cells induced by targeted low or high dose radiation. (Colorectal Cohort) IX. To explore changes in circulating T-cell populations, T-cell infiltration, RNA expression, spatial relationship of immune markers, and mutational burden as a result of low or high dose radiation. (Colorectal Cohort) OUTLINE:

Patients with NSCLC are randomized to Arm A, B, or C. Patients with colorectal cancer are randomized to Arm B or C. COHORT 1: Patients with NSCLC are randomized to 1 of 3 arms. ARM A: Patients receive tremelimumab intravenously (IV) and durvalumab IV over 60 minutes every 4 weeks for up to 16 weeks in the absence of disease progression or unacceptable toxicity. Patients then receive durvalumab IV over 60 minutes 4 weeks after last combination dose for up to 9 additional doses. ARM B: Patients receive tremelimumab and durvalumab and as in Arm A. Beginning at week 2, patients receive high dose radiation therapy once per day (QD) over 10 days for up to 3 fractions. ARM C: Patients receive tremelimumab and durvalumab and as in Arm A. Beginning at week 2, patients receive low dose radiation therapy every 6 hours twice per day (BID) on weeks 2, 6, 10 and 14. After completion of study treatment, patients are followed for up to 12 weeks.

View this trial on ClinicalTrials.gov

Interested in this trial?

Print this page and take it to your doctor to discuss your eligibilty and treatment options. Only your doctor can refer you to a clinical trial.

Resources

Canadian Cancer Society

These resources are provided in partnership with the Canadian Cancer Society