Weill Medical College of Cornell University
Patients with metastatic breast cancer with at least 2 brain metastases will receive pembrolizumab every 3 weeks. Patients will undergo stereotactic radiosurgery (SRS) to one of the brain lesions. Pembrolizumab infusion will be given on Day 4 (+/-1) after SRS treatment at the standard dose of 200mg IV over 30 minutes and repeated every 3 weeks until disease progression or unacceptable toxicity.
Patients with metastatic breast cancer with at least 2 brain metastases, eligible to receive SRS. Patients will complete radiation therapy within 1 week and Pembrolizumab may be continued every 3 weeks until evidence of brain progression or serious adverse toxicity. Patients will be followed until death. Pembrolizumab infusion will be given on Day 4 (+/-1) after SRS treatment at the standard dose of 200mg IV over 30 minutes and repeated every 3 weeks until disease progression or unacceptable toxicity.
Inclusion Criteria: * Age older than 18 * Eastern Cooperative Oncology Group (ECOG) performance status 0-1 * Men and/or pre- or post-menopausal women with metastatic breast cancer with at least 2 intracranial untreated and measurable (≥ 3mm) metastases as visualized on brain MRI * A diagnostic contrast enhanced MRI demonstrating at least 2 lesions in the brain, (≥3mm in size), performed within two weeks prior to treatment * Maximum diameter of treated lesions should be \<4cm in size * Have measurable disease based on RECIST 1.1. Lesions situated in a previously irradiated area are considered…
Pembrolizumab infusion will be given on Day 4 (+/-1) after SRS treatment at the standard dose of 200mg IV over 30 minutes and repeated every 3 weeks until disease progression or unacceptable toxicity.
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