Table 2 Number of conjoint genes found by directly comparing gene identifiers as stored in primary datasets, and by comparing datasets expanded by transcription factors and nearest neighbor protein-protein interactions. Meta-UP, Meta-ALL, and SEREX-ovarian are the original source datasets. Meta-UP+TFs represents the upregulated genes of Meta-ALL additionally enriched by identified transcription factors. Meta-UP, expanded, is the original Meta-UP gene list expanded by nearest neighbor protein-protein interactions. Meta-UP+TFs, expanded, additionally includes associated transcription factors. Meta-ALL, expanded, and SEREX, expanded, are the original datasets expanded by nearest neighbor protein-protein interactions.