Motivation: Genome-scale phenotypic data are available for many model organisms, yet existing tools to functionally interpret gene sets from these phenotypic data are largely based on mutagenesis-derived phenotypes observed in mouse or human. Results: Data from both mutagenesis and knockdown experiments are incorporated into mod PhEA to allow users to perform enrichment analyses based on phenotypes observed in budding yeast ( Saccharomyces cerevisiae ), roundworm ( Caenorhabditis elegans ), fruit fly ( Drosophila melanogaster ), zebrafish ( Danio rerio ), mouse ( Mus musculus ), and humans ( Homo sapiens ). The phenotypes analyzed can be customized to investigate complex traits and gene sets from any fully sequenced animal or fungal genome are also supported by mod PhEA.