type 1 diabetes

Nejentsev et al. (2009). Rare Variants of IFIH1, a Gene Implicated in Antiviral Responses, Protect Against Type 1 Diabetes. Science DOI: 10.1126/science.1167728 The first item on my long list of predictions for 2009 was that this will be the year of rare variants for common disease - the year that we really start tracking down the low-frequency genetic variants (between 0.1 and 5% in frequency) that likely contribute substantially to the risk of common diseases like arthritis and diabetes. It's far too early for me to claim vindication for this prediction, but a paper published online today…
An article in the latest issue of the New England Journal of Medicine takes a look at the sharing of genetic risk factors between type 1 diabetes and celiac disease, two reasonably common auto-immune disorders (affecting ~0.4 and ~0.1%, respectively, of individuals of northern European origin). Celiac disease is more common in type 1 diabetes than in the general population, so there's some reason to expect some shared genetic risk factors between the two disease. And indeed in this study the degree of overlap in risk genes between the two diseases is striking - out of 25 genes with a well-…