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Blood Test May Predict Type 1 Diabetes in Children

Evidence of two autoantibodies signaled a 70 percent risk, researchers say
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WebMD News from HealthDay

By Serena Gordon

HealthDay Reporter

TUESDAY, June 18 (HealthDay News) -- A diagnosis of type 1 diabetes often seems to come out of the blue. But German researchers say they can predict who will likely develop the chronic disease.

Blood samples taken from children at increased genetic risk of type 1 diabetes reveal significant "preclinical" clues, the researchers found. The strongest predictor is the presence of two diabetes-related autoantibodies, they reported in the June 18 issue of the Journal of the American Medical Association.

"If you have two or more autoantibodies, it's nearly inevitable that you will develop the disease. Most people -- even physicians -- don't appreciate this risk," said Dr. Jay Skyler, deputy director for clinical research at the Diabetes Research Institute and a professor at the University of Miami Miller School of Medicine. Skyler was not involved in the research.

Nearly 70 percent of youngsters with two diabetes-related autoantibodies developed type 1 diabetes over a 10-year period compared to less than 15 percent of kids with just one autoantibody, the researchers found.

Skyler, co-author of an accompanying journal editorial, said this study highlights the need for effective prevention strategies for type 1 diabetes.

Type 1 diabetes is believed to be an autoimmune disease in which the body's immune system mistakenly destroys the insulin-producing beta cells in the pancreas. Insulin is a hormone needed to turn the carbohydrates from food into fuel for the body.

To survive, people with type 1 diabetes must monitor their food intake and replace the lost insulin through injections or an insulin pump.

Type 1 diabetes can occur at any age, and there's currently no known way to prevent or cure it, according to the JDRF (formerly the Juvenile Diabetes Research Association). And unlike its more common counterpart, type 2 diabetes, the development of type 1 diabetes isn't linked to lifestyle choices.

The current study included children from Colorado, Finland and Germany who were followed from birth for as long as 15 years. Children in the Colorado and Finland study groups were included in the study if they had a specific genotype that indicated a genetic predisposition to developing type 1 diabetes. Children in the German study had to have a parent with type 1 diabetes to be included in the study.

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