Janus clinical trial data repository is a clinical trial data repository standard as sanctioned by the U.S. Food and Drug Administration (FDA). It was named for the Roman god Janus (mythology), who had two faces, one that could see in the past and one that could see in the future. The analogy is that the Janus data repository would enable the FDA and the pharmaceutical industry to both look retrospectively into past clinical trials, and also relative to one or more current clinical trials.