Scientists learned to diagnose cancer four years before the onset of symptoms

An international group of scientists has published the results of a multi-year study that could make a breakthrough in the diagnosis of cancer. It is known that cancer is insidious because it often manifests itself in the late stages, when the probability of a complete cure is not as high as in the initial stages. Now scientists seem to have learned to diagnose a dangerous disease a few years before it manifests itself.

Today, diagnosing cancer is quite a complex thing. Biopsy, which gives the most accurate result, can’t be done regularly, and for all organs. Blood tests for cancer markers are extremely imperfect and often give both false positives and false negatives. The new diagnostic method is called PanSeer, and it looks very reassuring.

The PanSeer blood test uses sophisticated chemical analysis and computer algorithms to detect traces of cancer in the early stages of tumor progression. According to scientists, this method has 90% accuracy, gives only 5% false positive results and only 5% of cases do not find signs of cancer.

The study began in 2007. Scientists took blood samples from 123,000 Chinese volunteers annually. Over the next ten years, 1,100 people in the study got cancer. Medics have analyzed their tests over the years and found that PanSeer showed signs of cancer at the stage of tumor birth, ranging from one to four years before making an official diagnosis based on traditional diagnostic methods.

At least lung, rectum, stomach, esophagus and liver can be diagnosed with PanSeer. Scientists expect that over time, PanSeer will become the main method of diagnosing cancer at an early stage. It’ll be enough to test once a year to save millions of people.