http://www.sciencedaily.com/releases/2009/02/090203081624.htm
A variation in the gene FOXO3A has a positive effect on the life expectancy of humans, and is found much more often in people living to 100 and beyond – moreover, this appears to be true worldwide.

This discovery is of particular importance as there are genetic differences between Japanese and European people. We can now conclude that this gene is probably important as a factor in longevity throughout the world."