“…For example, according to the "guilt-by-direct-association" principle, the prioritization is enabled by ranking candidate genes in a susceptibility region according to their relevance to genes that are already known to be associated with the query disease under investigation (i.e., seed genes). Based on this principle, a wide variety of information, including protein sequences [3,4], gene expression profiles [4][5][6], functional annotations [6][7][8][9], literature descriptions [4,5,10], protein-protein interactions (PPI) [5,6,11,12], and many others [13], has been used to facilitate the prioritization of candidate genes.…”