This document provides information about a datathon focused on drug repurposing for rare diseases. It discusses: 1) The goals of the datathon to use data science approaches like machine learning to identify potential drug repurposing opportunities for rare diseases. 2) The partners involved - The Pistoia Alliance, Cures Within Reach, and Mission: Cure. 3) How participants can access data on the Entellect platform and work collaboratively on the datathon challenge to find new treatments for rare diseases.