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Question:

From Canada:

What is the probability of a IDDM male, diagnosed at the age of ten, having diabetic children in his middle to late twenties? Is there any way to determine if Type 1 is caused by heredity or environmental factors? In this particular case, this man had chicken pox and measles before diagnosis of Type 1 diabetes (so an environmental cause seems plausible). Can amniocentesis or other prenatal screening tests show predispositions to Type 1?

Answer:

In all cases of Type 1A (autoimmune) diabetes both genetic and environmental factors are involved; but the history of chickenpox and measles is almost certainly irrelevant. The chances of a father with Type 1 having children with the same problem are a little over 6% for a Caucasian in North America. Amniocentesis could confirm susceptibility but the small risk would not be justified as the information could be obtained on cord blood.

DOB

DTQ-19991105170935
Original posting 29 Mar 2000
Posted to Genetics and Heredity

  
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Last Updated: Tuesday April 06, 2010 15:09:10
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