About this trial
This is a multi-center, single arm trial to evaluate the cancer detection rate of supplemental screening magnetic resonance imaging (MRI) in participants who are high-risk by Mirai-MRI assessment. Mirai is an accurate cancer risk model based on full-resolution mammograms.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
All asymptomatic participants assigned female at birth, ages 40-89 years old with screening mammography assessed as Breast Imaging Reporting and Data System (BI-RADS) 1, BI-RADS 2, or initial BI-RADS 0 with subsequent diagnostic mammogram assessed as BI-RADS 1 or BI-RADS 2.
Screening mammogram assessed as high-risk by Mirai (top 3 percentile of 2-year risk).
Availability of a routine screening mammogram report, along with a subsequent diagnostic mammogram report if applicable, and access to the corresponding Digital Imaging and Communications in Medicine (DICOM) images.
Ability to understand and the willingness to sign a written informed consent document.
Disqualifiers
Screening mammogram that is assessed as BI-RADS 0 for technical recall.
Metallic foreign body in the eye.
MRI unsafe implants and/or medical devices.
Adverse reaction to a (gadolinium-based) contrast agent in the past.
Trial design
Single group
Treatments tested in this trial
Magnetic resonance imaging (MRI)
Procedure/SurgeryUndergo Magnetic resonance (MR) imaging
Artificial Intelligence (AI)
DeviceAI applied to MRI images
Treatment groups
Trial outcomes
Primary outcomes
Cancer detection rate (CDR)
The CDR is defined as the number of breast cancers identified per 1,000 magnetic resonance imaging (MRI) screening examinations performed 1 year following supplemental screening MRI.
Secondary outcomes
CDR of participants designated as low risk using the Tyrer-Cuzick (TC) criteria
Cancer detection rate is defined as the number of breast cancers identified per 1,000 MRI screening examinations performed of supplemental screening breast MRI in participants with high Mirai risk and low (\<20%) lifetime TC risk.
Comparison of CDR in low and high TC risk groups
The CDR of supplemental screening breast MRI in participants with high Mirai risk and high (≥ 20%) lifetime TC risk versus CDR in participants with high Mirai risk and low (\<20%) lifetime TC risk will be compared using a two-proportion exact test.
Positive predictive value of supplemental MRI screening and BI-RADS Score (PPV1)
PPV1 is the percentage of all positive supplemental MRI screening in participants with high Mirai risk (Breast Imaging Reporting and Data System (BI-RADS) 3, 4, or 5) for which the participant was found to be positive for cancer within 1 year from the time of MRI.
Positive predictive value of supplemental MRI screening recommending histological or surgical follow-up (PPV2)
PPV2 is the percentage of all supplemental MRI screenings in participants with high Mirai risk recommended for tissue diagnosis or surgical consultation (BI-RADS 4 and 5) that resulted in a histological diagnosis of cancer within 1 year.
Sponsors and contacts
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University of California, San Francisco
Lead sponsor
Breast Cancer Research Foundation
Collaborator