MEDI4736 and Tremelimumab in Treating Patients With Metastatic HER2 Negative Breast Cancer

Stage IV Breast Cancer Clinical Trial

Official title: A Single Arm Phase II Study Evaluating the Efficacy and Safety of MEDI4736 in Combination With Tremelimumab in Patients With Metastatic Her2 Negative Breast Cancer

Status Completed

Clinical Trial Summary

The main purpose of this study is to determine the anti-tumor activity of MEDI4736 in combination with tremelimumab in patients with metastatic HER2-negative breast cancer. Both MEDI4736 and tremelimumab are antibodies (proteins used by the immune system to fight infections and cancers). MEDI4736 attaches to a protein in tumors called PD-L1. It may prevent cancer growth by helping certain blood cells of the immune system get rid of the tumor. Tremelimumab stimulates (wakes up) the immune system to attack the tumor by inhibiting a protein molecule called CTLA-4 on immune cells. Combining the actions of these drugs may result in better treatment options for patients with breast cancer.

Clinical Trial Description

PRIMARY OBJECTIVES:

I. To evaluate clinical benefit rate in patients with metastatic HER2 negative breast cancer treated with MEDI4736 in combination with tremelimumab.

SECONDARY OBJECTIVES:

I. To evaluate progression free survival (PFS) and overall survival (OS) in patients with metastatic HER2 negative breast cancer treated with MEDI4736 in combination with tremelimumab.

II. To evaluate safety and tolerability.

TERTIARY OBJECTIVES:

I. To evaluate if tissue-based immunohistochemical expression of programmed death-ligand (PD-L)1; tumor infiltrating lymphocytes (TILs); peripheral T cell subpopulations; changes in tissue and peripheral T cell receptor genotype; human leukocyte antigen (HLA) genotype; and immune-related candidate gene signatures predict response to MEDI4736 in combination with tremelimumab.

II. To demonstrate the pharmacodynamic effects of MEDI4736 and tremelimumab on tissue and serum based biomarkers including PD-L1, TILs, T cell subpopulations, and T cell receptor genotype.

OUTLINE:

Patients receive MEDI4736 intravenously (IV) over 1 hour and tremelimumab IV over 1 hour on day 1. Treatment repeats every 28 days for 4 courses in the absence of disease progression or unacceptable toxicity. Four weeks after the last combination dose, patients continue to receive MEDI4736 every 2 weeks for up to 18 additional doses in the absence of disease progression or unacceptable toxicity. Patients who achieve clinical benefit (complete response [CR], partial response [PR], or stable disease [SD]) until the end of the 52 week period will then enter follow-up. During follow-up patients who develop PD may be re-treated with MEDI4736 at the dose previously administered IV for an additional 52 weeks using the same guidelines as with the initial 52 week period if they meet treatment in the setting of PD criteria. Only one 52 week retreatment period will be allowed.

After completion of study treatment, patients are followed up at 3, 6, 9, and 12 months, and then every 6 months for 3 years. ;

Related Conditions & MeSH terms

• Breast Neoplasms
• Estrogen Receptor Negative
• Estrogen Receptor Positive
• HER2/Neu Negative
• Recurrent Breast Carcinoma
• Stage IV Breast Cancer

• NCT number: NCT02536794
• Study type: Interventional
• Source: Northwestern University
• Status: Completed
• Phase: Phase 2
• Start date: January 14, 2016
• Completion date: January 22, 2021