Pembrolizumab in Treating Patients With Stage IV Metastatic or Recurrent Inflammatory Breast Cancer or Triple-Negative Breast Cancer Who Have Achieved Clinical Response or Stable Disease to Prior Chemotherapy

Description

PRIMARY OBJECTIVES:

Primary Objective: To assess the efficacy of MK-3475 as a single agent in patients with metastatic IBC or non-IBC TNBC

EXPLORATORY OBJECTIVES:

1. To investigate the association between biomarkers in the peripheral blood and tumor tissue, such as PD-L1 expression, with safety and efficacy for IBC or non-IBC TNBC patients treated with MK-3475.
2. To determine the disease control rate of metastatic IBC or non-IBC TNBC patients who have achieved clinical response or stable disease to the systemic therapy.
3. To investigate the association between biomarkers and efficacy by RNA-sequencing of exosomes in blood and tumor for IBC or non-IBC TNBC patients treated with MK-3475.
4. To investigate the 5-year OS for IBC or non-IBC TNBC patients treated with MK-3475

OUTLINE:

Patients receive pembrolizumab 200mg IV over approximately 30 minutes on day 1. Cycles repeat every 21 days for 8 cycles and then pembrolizumab 400mg IV every 42 days for total up to 24 months in the absence of disease progression or unacceptable toxicity

After completion of study treatment, patients are followed up at approximately 1 and 3 months.