Now a blood test will be able to detect cancer four years before its first symptoms, here's what you should know
New Delhi | Jagran Lifestyle Desk: In a remarkable leap for the Medical science, the scientists have developed a blood test that will be able to detect the cancer up to four years before the first symptoms appear in the body, raising hopes of a much early detection of the Cancer.
The test, known as PanSeer, is basically a non-invasive blood test, than can detect cancer in 95 per cent of the individuals who show no symptoms but are later diagnosed with Cancerous development somewhere in the body.
The PanSeer test has been developed by the researchers in China, whose research results were published in ‘Nature Communications’ journal on Tuesday.
“We demonstrated that five types of cancer can be detected through a DNA methylation-based blood test up to four years before conventional diagnosis,” the team of researchers wrote in the journal.
They said that the PanSeer test picks up the cancerous growths that doesn’t induce any symptoms but are later become malignant, that is, lethal. According to a report in The Guardian, PanSeer like tests, also known as liquid biopsies are being researched upon in many parts of the world, as unlike the conventional biopsies, it is a non-invasive mode to screen the patients.
Despite a gain in the momentum of such studies, worldwide, there have been very few studies that resulted in detection of cancers even before the patients show any symptoms.
How cancerous growth can be detected without any symptoms?
The researchers in this case, quite unconventionally, utilised certain machine learning algorithms to develop a smart system which was able to determine whether any DNA found circulating in the blood was shed by tumours or not.
Of 414 blood samples taken from the participants between 2007 and 2014, the PanSeer was able to flag the Cancer in 95 per cent of the participants who were yet not diagnosed with the cancer but later went on to actually develop it in their bodies. The test also precisely detected the ones without cancer over 96 per cent of the time.
‘Encouraging initial results’, says the expert
“The PanSeer test has achieved encouraging initial results. Promisingly, the test may be able to detect cancer in blood samples taken years before diagnosis,” Samantha Harrison, a senior early diagnosis manager at Cancer Research UK told The Guardian, while adding on to emphasise the need to vindicate similar results on a larger participant group.
Posted By: Abhinav Gupta