A Study to Evaluate the Safety and Feasibility of Blood-Brain Barrier Disruption Using MRI-Guided Focused Ultrasound in the Treatment of Her2-positive Breast Cancer Brain Metastases
Overview
- Phase
- Not Applicable
- Intervention
- ExAblate BBBD
- Conditions
- Breast Cancer
- Sponsor
- InSightec
- Enrollment
- 8
- Locations
- 1
- Primary Endpoint
- Adverse events
- Status
- Completed
- Last Updated
- last month
Overview
Brief Summary
The purpose of this study is to evaluate the safety of BBB disruption using the ExAblate 4000-system Type 2 in patients with Her-2 positive breast cancer metastases in the brain.
Detailed Description
The goal of this prospective, single arm, non-randomized study is to evaluate the safety and feasibility of using the Exablate Model 4000 Type 2 "Neuro-System" as a tool to serially disrupt the blood brain barrier in a temporary and localized fashion in patients with breast cancer and brain metastases. Up to 10 patients will be recruited at Sunnybrook. Patients will be consented, screened, undergo up to 6 study Exablate BBBD treatment cycles, every 2-3 weeks based on their trastuzumab regimen. Follow-up will continue through 12 weeks following the last BBBD post-treatment and the subject's participation in the study will be complete. Data will be collected to establish the basic safety of this type of treatment as the basis for later studies to evaluate clinical efficacy.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Men and women between 18 and 80 years of age
- •Able and willing to give informed consent
- •Metastatic Her2-positive breast cancer with brain metastases
- •Karnofsky performance score 70-100
- •ASA score 1-3
- •Able to communicate sensations during the ExAblate BBBD procedure
- •Able to attend all study visits (i.e., life expectancy of at least 3 months)
- •At least 14 days passed since last brain surgery
- •At least 6 weeks passed since last radiation treatment
Exclusion Criteria
- •Brain metastases not visible on the pre-therapy imaging
- •The sonication pathway to the tumour involves:
- •i. Extensive scalp scars ii. Clips or other metallic implanted objects in the skull or the brain, except shunts
- •The subject presents with symptoms and signs of increased intracranial pressure (e.g., headache, nausea, vomiting, lethargy, and papilledema)
- •Cardiac disease or unstable hemodynamics including:
- •i. Documented myocardial infarction within six months of enrolment ii. Unstable angina on medication iii. Congestive heart failure iv. Left ventricular ejection fraction \< 50% v. Right-to-left, bidirectional, or transient right-to-left cardiac shunts vi. History of a hemodynamically unstable cardiac arrythmia vii. Cardiac pacemaker viii. Contraindications to perflutren including subjects with a family or personal history of QT prolongation or taking concomitant medications known to cause QTc prolongation
- •Severe hypertension (diastolic BP \> 100 on medication)
- •Anti-coagulant therapy or medications known to increase risk of hemorrhage within washout period prior to treatment (i.e. antiplatelet or vitamin K inhibitor anticoagulants within 7 days, non-vitamin K inhibitor anticoagulants within 72 hours, or heparin-derived compounds within 48 hours of treatment)
- •History of a bleeding disorder, coagulopathy or with a history of spontaneous tumour hemorrhage
- •Abnormal level of platelets (\< 100000) or INR \> 1.3
Arms & Interventions
ExAblate BBBD
Using ExAblate Model 4000 Type-2 to temporarily disrupt the blood brain barrier in patients with Her-2 positive breast cancer and brain metastases
Intervention: ExAblate BBBD
Outcomes
Primary Outcomes
Adverse events
Time Frame: Throughout the study, approximately 10 months.
Rate of adverse events following each treatment through end of study
Secondary Outcomes
- Feasibility of BBBD(Immediately after each BBBD procedure)