Published genomewide association (GWA) studies typically analyze and report single-nucleotide polymorphisms (SNPs)
and their neighboring genes with the strongest evidence of association (the “most-significant SNPs/genes” approach),
while paying little attention to the rest. Borrowing ideas from microarray data analysis, we demonstrate that pathwaybased
approaches, which jointly consider multiple contributing factors in the same pathway, might complement the
most-significant SNPs/genes approach and provide additional insights into interpretation of GWA data on complex
diseases.