SUMMARY OF RESULTS- Approximately 6,000 drugs were screened against a target library of 33,000 proteins. The median number of protein targets per drug was 38, showing that most drugs likely have multiple targets. Similarly, the median number of drug interactions per protein is 55, showing that most proteins likely interact with many drugs. This demonstrates that each drug has an average of 38 protein targets in the body and therefore many more potential uses. PanXome can be used to identify new targets so existing drugs in the market can be repurposed to new diseases. Fifteen drugs that recently failed efficacy trails were investigated further and of these, PanXome software was able to predict alternative protein targets for eleven of the drugs.