Should we stop talking about heritability in 2014?

Genetic epidemiology. Long before the first epilepsy gene was discovered, clinicians and researchers were wondering about a genetic contribution to epilepsy. Some epilepsy syndrome were found to run in families in an autosomal dominant or recessive pattern. In other epilepsies, there was an obvious excess of affected family members in the immediate or extended family. And this is how we got stuck with the concept of heritability. Let’s review the perils and pitfalls of heritability and ask the question whether we should retire this concept in the current era of genomic medicine. Continue reading

Spooky, scary, phantom heritability

Twilight zone. Admittedly, Halloween is already a few weeks behind us, but I was reminded of it a week ago when I stumbled across the concept of phantom heritability. And guess what, this concept has already been out there since early 2012 and, scarily enough, we didn’t notice it. So what is this mysterious conspiracy behind phantom heritability? Well, it’s about things out there beyond our understanding and the fact that we might already know more than we think we know. But be warned, if you decide to read this post, your understanding of genetic architecture might be changed forever. And there is no going back. Boo! Continue reading