Washington on January 20 (xinhua) (reporter Lin Xiaochun Zhou Zhou) U.S. researchers have developed a new type of blood test, can be found at a time has not yet spread of 8 kinds of common types of cancer, in the direction of the realization of universal early cancer detection is a big step.
data diagram (for figure/visual China)
this noninvasive detection method called CancerSEEK by American Johns & middot; Researchers at Johns Hopkins university development, can pass the test blood samples of 16 kinds of genetic mutations associated with cancer and 8 kinds of proteins, detect ovarian cancer, liver cancer, gastric cancer, pancreatic cancer, esophageal cancer, colorectal cancer, lung cancer and breast cancer.
the researchers in the latest issue of the United States issued a report in the journal science, said they use 1005 cancer patients and 850 healthy controls were not transfer were tested and found the specificity of this method was 99%, which means that the possibility of healthy people were misdiagnosed at less than 1%.
as a whole, the median or the sensitivity of the detection accuracy is 70%, which can accurately found that seventy percent of cancer patients, including ovarian cancer detection sensitivity is highest, at 98%; Compared to 33% of breast cancer detection sensitivity, the lowest.
the test for eight kinds of cancer, ovarian cancer, liver cancer, gastric cancer, pancreatic cancer and esophageal cancer there is no screening method, the detection sensitivity were above 69%.
in addition, the test also provides 83% of the patients with tumor location accurate information, is difficult to do this in the past.
researchers estimate that the cost of the test will be less than $500, with the current single types of cancer screening test fee will be quite or lower.
, say experts, the detecting foreground is very good, but also the need for larger studies. In addition, its sensitivity is not high enough to some cancers, which means that might miss quite a proportion of patients with early cancer.