Phenopedia provides a disease-centered view of genetic association studies. Information about genes studied in relation to a particular disease (e.g. stroke) or phenotype (e.g. hypertension) is summarized on the web page in tabular format. To perform a search, the user enters a disease term in the search box; the system maps the search text onto possible MeSH disease term(s), and the user selects from among all possible terms. Results of the search include: (i) the number of published genetic association studies, including the numbers of meta-analyses and genome-wide association studies (GWAS); (ii) the number of genes studied; (iii) the number of investigators (published authors) in the field; and (iv) temporal and geographic publication trends. A separate table displays a list of genes in descending order of the frequency with which they have been studied for association with the disease. For each gene, the table includes the total number of publications, as well as the numbers of meta-analyses, GWAS and gene–environment interaction studies; a link leads to a display of publication trends for the specific gene–disease association (Supplementary Fig. 1A and
