examining data collected on multiple different platforms, genotype imputation also makes it simple for researchers to compare results of genomewide association studies that target related traits. In this way, it has been possible to contrast results from genetic studies of blood lipid levels (111) to those of previous studies of coronary artery disease (105), to compare results of studies of blood glucose levels in non-diabetic individuals (79) to those of previous case-control studies of type 2 diabetes (116), and to compare results of studies of height (89) to those of previous studies of osteoarthritis (68). We expect that these sorts of contrasts between the results of genomewide studies for different traits will become ever more commonplace and that they will ultimately provide useful insights about the genetic basis of many complex human traits.
