Does APOE Increase Risk for Cerebral Palsy?

That fascinating gene, APOE (for apolipoprotein E), is back in the news again. You’ve probably heard of APOE as an indicator for Alzheimers disease or cardiac disease. (Around 40-65% of patients with Alzheimers have at least one copy of the e4 form of the gene. However, this gene alone doesn’t give a complete picture of risk. Previous comments)

Researchers at Northwestern University have published a study that indicates two fforms of the APOE gene, called e4 and e2, carry increased risk for cerebral palsy. In this cross-sectional study pf 209 children with CP and 209 healthy matched controls, the e4 form increased the overall risk of CP by 3.4-fold and the risk of quadriplegic/triplegic disease by 5.5-fold. Carrying the e2 form, which is much less common than e4, was associated with a 12-fold increased risk of CP.

For me, research like this just underscores the complexity of trying to associate genetic findings with everyday application into our everyday lives. Many people I talk to have the mistaken impression that each gene has one purpose and one effect. Finding a gene means we can find a solution. Like all things, genes are much more complicated than that!

Pediatrics 2007;119:306-313

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