Blood tests can detect more than 20 different cancers, including pancreas, ovary and breast, because scientists believe it is 99.4% accurate
- Unnamed test looks for genetic changes related to the development of the disease
- When tested on 3,600 blood samples, cancer was diagnosed 99.4% of the time
- Scientists hope that patients can be treated faster with the test, which benefits success
A new blood test could show more than 20 different cancers, research suggests.
The scientists at Harvard University have made a test that looks for genetic changes related to the development of tumors.
When tested on nearly 3,600 blood samples, it correctly identified cancer patients in 99.4 percent of cases, with only 0.6 percent being incorrect diagnoses.
The scientists hope that their test will allow patients to be diagnosed and treated faster, thereby increasing their chances of success. It is unclear when it may be available.
A new blood test could show more than 20 types of cancer, research suggests (stock)
The test looks for abnormal methylation, a process that occurs when so-called methyl groups are added to a DNA molecule.
Methylation checks whether a gene & # 39; on & # 39; or & # 39; from & # 39; where certain variations are associated with cancer.
Methylated DNA enters the bloodstream through cancer cells when a tumor dies.
Existing & # 39; liquid biopsies & # 39; detect genetic mutations or other cancer-related changes in DNA.
& # 39; Our work showed that methylation-based tests outperform traditional DNA sequencing approaches to detect multiple cancers in blood samples, & # 39; said lead author Dr. Geoffrey Oxnard.
& # 39; The results of the new study show that such tests are a viable way to screen people for cancer. & # 39;
The scientists analyzed 3,583 blood samples. Including 1,530 drawn from cancer patients and 2,053 from people without the disease.
The patients' samples consisted of more than 20 forms of the disease, including pancreas, ovary, colorectal and breast.
WHAT ARE THE FOUR CITIES OF CANCER?
Phase one: Cancer is relatively small and is in the organ where it started
Phase two: Tumor is larger than stage one but has not spread to the surrounding tissue. In some cases, cancer cells may have spread to nearby lymph nodes
Phase three: Cancer is larger and begins to spread to the surrounding tissue. Malignant cells are located in the lymph nodes of that part of the body
Phase four: Cancer has spread and causes a secondary form of the disease
Source: Cancer Research UK
In general, the test, to be mentioned, has a & # 39; cancer signal & # 39; 99.4 percent of the time. picked up.
The scientists then investigated whether the test could narrow where the cancer started, making it 89 percent of the time good.
When analyzing & # 39; high mortality cancers & # 39; it discovered the disease in 76 percent of cases.
Within this group, susceptibility to stage one cancer was 32 percent, stage two 76 percent, stage three 85 percent and stage four 93 percent.
& # 39; Even detecting a modest percentage of common cancers can translate into many patients who may receive more effective treatment if the test is used frequently, & # 39; Dr. told Oxnard The Telegraph.
The full results will be presented at the European Society for Medical Oncology 2019 Congress in Barcelona.
Health ministers have promised that three quarters of cancer patients will be diagnosed in phase one or two by 2028.
Britain stands at the bottom of international rankings for cancer survival, two decades behind some countries.
This week, an independent review of NHS cancer screening is set to warn that & # 39; confusion and delays & # 39; cost of life.
Reportedly, Public Health England should be deprived of its role in monitoring diagnoses.
With early diagnosis, cancer tumors are smaller and have not spread. Once the disease has spread, treatment becomes more difficult.
When it comes to colon cancer, nine out of 10 patients will survive more than five years if they are diagnosed at an early stage, according to statistics from Cancer Research UK.
And more than 90 percent of women diagnosed with breast cancer at the earliest stage live for at least five years, compared to about 15 percent in the most advanced phase.
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