A Study to Identify Breast Cancer (IDBC)

The current project is aimed at validating Syantra DX Breast Cancer in a screening population. Syantra DX Breast Cancer measures gene expression signatures in whole blood, and has been retrospectively demonstrated in 780 samples. The test uses proprietary algorithms to analyse gene expression characteristics from a novel multi-biomarker panel, and then classify a sample as positive or negative for breast cancer. Based upon test performance in a retrospective environment, a prospective validation study is being proposed, and is described below.

The study seeks to evaluate performance of Syantra DX Breast Cancer in prospective samples and to optimize test methodology and biomarkers. Key to performance of the study is recruitment of women who provide a blood sample around the time of a screening mammogram. Some women have received an abnormal mammography report, and have been classified under the UK Royal College of Radiologists Breast Group (RCRBG) or BI-RADS scoring system in categories 3 - 5. This will support the ability to employ the test for breast cancer detection in a screening/call-back environment. To complete the study cohort, additional women will be recruited from the population who have normal or benign mammography results (RCRBG category 1 and 2), and/or a recent normal physical breast exam, with no history of breast cancer. Blood samples will be acquired from all women following completion of an informed consent procedure.

For those with an abnormal mammogram, blood will be drawn before a biopsy is performed. All sample information will be de-identified, and the samples will be processed and analysed according to Syantra DX Breast Cancer standard operating procedures. These procedures include extracting sample RNA and aliquoting for storage in a manner that maintains sample anonymity. All processing and analysis will be conducted in a blind environment without knowing the associated RCRBG or pathology outcomes for any samples. Only after testing is complete will sample classifications be revealed. Syantra DX Breast Cancer results will then be compared to RCRBG/BI-RADs, biopsy and pathology data to determine performance, and statistics will be calculated.

There is an optional part of the study procedure that is included as 'additional research'. A specific question seeking approval for the additional research is included on the study consent form. For individuals who agree to participate in the additional research, material extracted from their blood sample will be stored for additional investigations.

Inclusion criteria

• Aged 30-75 years
• Normal breast examination - No cancer detected/suspected by physical exam, diagnostic radiology or screening mammography
• Women with suspected Invasive Breast Cancer
• Individuals with an abnormal or suspicious mammogram
• Abnormal screening mammogram with suspected benign breast disease or proliferative changes

Exclusion criteria

• Cancer diagnosis
• Male
• Breast surgery within the previous 12 months (for any reason) or recent breast biopsy (including needle core biopsy)
• Previous history of any cancer
• Concomitant or other concurrent anti-cancer therapy
• Inoperable or inflammatory breast cancer