This is research conducted by oncologists at Memorial Sloan Kettering Cancer Center. The experts used a test – which is still in the testing phase – that detects whether there is presence in the blood of circulating tumor DNA, derived from the tumor and present in the bloodstream even when there are no signs of the disease in the patient
An investigation presented this September 11 at the congress of the European Society of Medical Oncology (ESMO) held in Paris, France, showed that up to 50 types of cancer could be detected with a simple blood test in an undiagnosed population without symptoms of the illness.
The study, coordinated by oncologist Deborah Schrag, has been presented as a pioneer in the early diagnosis of cancer through a test that detects the presence of circulating tumor DNA in the blood, derived from the tumor and present in the bloodstream even when there are no signs of the disease in the patient, he reviewed EFE.
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Oncologists at the Memorial Sloan Kettering Cancer Center (Mskcc) in New York, United States (USA) in the investigation detailed that they did a blood test on 6,621 people over 50 years of age who had neither a diagnosis nor symptoms of the disease.
It was found that 99% of the total were negative, while signs of cancer were detected in 1.4%, but only 38% (of 1.4%) were confirmed with a subsequent test.
With these results, oncologists understand that early detection of cancer with a simple blood test opens a new era to rule out the presence of the disease and improve cancer mortality and morbidity, but not incidence.
They maintain that 38% of positives in cancer patients is a “good” percentage and an important step for early detection with this tool, while the fact that the test is capable of detecting 99% of negatives in free patients of the disease represents an “excellent” rate and demonstrates the ability of the test to rule out the tumor.
Once the test was positive, it took, on average, less than two months to confirm the diagnosis if they had cancer and a little more, around three, if they did not, mainly because the doctors chose to do imaging studies and repeat them a second time months later.
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