What are the tests?
OBD’s EpiSwitch PSE test is a blood test that boosts the predictive accuracy of a standard PSA test from 55% to 94% when testing for the presence or absence of prostate cancer, which was launched in the UK and US in September 2023 (see www.94percent.com). The PSE test is the culmination of nearly ten years of collaborative work between OBD, Imperial College London, the University of East Anglia, Imperial College NHS Trust, and leading UK prostate cancer experts, as part of the PROSTAGRAM screening pilot. As well as a high 94% accuracy, PSE offers high specificity, 97% (standard PSA alone: 53%), and high sensitivity, 86% (PSA: 64%), as well as high positive, 93% (PSA: 25%1), and high negative, 95% (PSA: 86%1) predictive values to assess the risk of prostate cancer in men, published in the peer-reviewed publication, Cancers2.
The EpiSwitch CiRT test will be available to The London Clinic doctors considering treating their cancer patients with a widely used class of cancer therapies: Immune Checkpoint Inhibitors (ICIs)3. CiRT is a routine blood test that accurately identifies patients who will respond to ICI therapy with a binary result (responder vs. non-responder) to support first-line treatment planning, and make more informed treatment decisions when no benefit or disease progression is observed, or adverse events occur. The test can also identify ICI candidates in patients where other options have been exhausted or other tests are negative for use (see www.myCiRT.com).