Database of Genotypes and Phenotypes (dbGaP) (ICPSR 34520)

Principal Investigator(s): United States Department of Health and Human Services. National Institutes of Health. National Center for Biotechnology Information


The database of Genotypes and Phenotypes (dbGaP) was developed to archive and distribute the results of studies that have investigated the interaction of genotype and phenotype. Such studies include genome-wide association studies, medical sequencing, molecular diagnostic assays, as well as association between genotype and non-clinical traits. The advent of high-throughput, cost-effective methods for genotyping and sequencing has provided powerful tools that allow for the generation of the massive amount of genotypic data required to make these analyses possible.

dbGaP provides two levels of access - open and controlled - in order to allow broad release of non-sensitive data, while providing oversight and investigator accountability for sensitive data sets involving personal health information. Summaries of studies and the contents of measured variables as well as original study document text are generally available to the public, while access to individual-level data including phenotypic data tables and genotypes require varying levels of authorization.

Access Notes

  • These data are not available from ICPSR. Users should consult the data owners directly (via dbGaP) for details on obtaining these resources.

Study Description

Scope of Study

Subject Terms:    databases, genetics, genetics data

Data Collection Notes:

These data are not available from NAHDAP or ICPSR. Users should consult the data owners directly for details on obtaining access to the data and documentation.