The database of Genotypes and Phenotypes (dbGaP) is an NIH-maintained database of datasets developed to archive and distribute the results of studies that have investigated the interaction of genotype and phenotype. For a complete description, please refer to the NIH dbGaP page (https://www.ncbi.nlm.nih.gov/projects/gap/cgi-bin/about.cgi).
Researchers are able to access and download data from as well as contribute/submit data to the dbGaP.