Does the olfactomédine provide an help to limit the number of false positives in the overall imaging balance and limit the number of unnecessary biopsies?
About 5% of breast cancers are associated with the presence of a constitutional genetic alteration. Two genes are being studied: BRCA1 and BRCA2. The national program for breast cancer screening target women 50 to 74 years but does not include women with significant risk factors. However in identifiable risk situations, breast cancer incidence is increased: and it affects 1 in 4 women with certain risk histological lesions and more than 1 in 2 women carrying a mutation in the BRCA1 or BRCA2 gene. Studies have shown that the olfactomédine 4 (OLFM4) is highly overexpressed in tumors compared to healthy tissue. The OLFM4 might therefore be a marker for early detection of breast cancer. We wish to determine the positive predictive value of OLFM4 seric dosing of patients at risk with respect to imaging.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
SCREENING
Masking
NONE
Enrollment
150
patient have an additional blood test every 6 months for dosing OLFM4
Institut de Cancerologie de l'Ouest
Angers, France
CHU Morvan
Brest, France
Instit de Cancérologie de l'Ouest
Nantes, France
CHBA Hopital Chubert
Vannes, France
Predictive value of circulating OLFM4 in BRCA1/2 mutation carriers or high-risk women with positive breast imaging
The primary objective is to determine the positive predictive value of serum OLFM4 levels in women who are BRCA1 or BRCA2 mutation carriers, or considered at high risk for breast cancer, and who present with a positive imaging workup (including MRI, mammography, and ultrasound) leading to biopsy. The study aims to assess whether OLFM4 can help reduce false positives from imaging and thereby limit unnecessary biopsies. Blood samples will be collected every 6 months over a 10-year period.
Time frame: Every 6 months, up to 10 years (120 months)
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