The chief purpose of the RS is to facilitate the enrollment of research participants into UCSF clinical studies. The primary function of the Registry is to expand the pool of potential clinical research volunteers. The Registry stores self-reported identifiable health information in a searchable database that is compliant with the privacy requirements of the Health Insurance Portability and Accountability Act (HIPAA). This information is then used by the RS for the future identification and recruitment of potentially eligible participants for specific UCSF studies.