Health
US begins trial of blood test that promises early detection of cancer
Questions remain about how to interpret the results of the MCED test. Only some blood tests can identify which organ the cancer is actually in. Laboratory tests must be done on tissue that may be cancerous to confirm the diagnosis, but a biopsy of someone’s whole body is not possible. False positives remain a problem for the entire field of cancer screening, deliberately sifting through mountains of healthy tests to find cancer. Galleri has been the furthest along for MCED dissemination, in the aforementioned study he falsely flagged 57 healthy blood samples as cancerous.
Some cancers are not invasive or life-threatening, but early detection may require harsh treatments such as chemotherapy. Some data suggest that less worrisome cancers actually appear in the bloodstream, which may limit the impact of these tests.
The NIC trial helps determine how cancer blood test results should be interpreted, and provides a standard approach for initiating cancer screening studies as companies flood the scene with new tests. should do.
“Most companies would not want to compare tests directly,” he says. Timothy Leveque, Professor of Cancer Prevention at Harvard University. “It’s expensive and hard. That’s why a neutral party like the NCI needs to do it.”
Rebbeck believes the blood tests in the new trial will be most helpful in cases of pancreatic, liver and ovarian cancer, which have high mortality rates and for which there are no other screening methods. Longer trials are needed to see if the time gained by testing is life-saving.
But Rebbeck is optimistic about Cancer Moonshot’s ultimate goal.
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Sources 2/ https://www.technologyreview.com/2022/09/12/1059266/us-trial-cancer-blood-tests-early-detection/ The mention sources can contact us to remove/changing this article |
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