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Single blood test to predict premature death risk

Sydney: With identification of a biomarker, researchers have found that a single blood test could reveal whether an apparently healthy person is likely to die of pneumonia or sepsis within the next 14 years.

Based on an analysis of 10,000 individuals, the researchers identified a molecular byproduct of inflammation, called GlycA, which seems to predict premature death due to infections.

Single blood test
Representational picture

The findings suggest that high GlycA levels in the blood indicate a state of chronic inflammation that may arise from low-level chronic infection or an overactive immune response.

That inflammation damages the body, which likely renders individuals more susceptible to severe infections, the study said.

"As biomedical researchers, we want to help people, and there are few more important things I can think of than identifying apparently healthy individuals who might actually be at increased risk of disease and death," said co-senior author of the study Michael Inouye from University of Melbourne, in Australia.

"We want to short-circuit that risk, and to do that we need to understand what this blood biomarker of disease risk is actually telling us," Inouye noted.

The researchers noted that additional studies are needed to uncover the mechanisms involved in GlycA's link to inflammation and premature death, and whether testing for GlycA levels in the clinic might someday be warranted.

"We still have a lot of work ahead to understand if we can modify the risk in some way," co-senior author Johannes Kettunen from University of Oulu in Finland pointed out.

The study was published in the journal Cell Systems.

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