Tempus, a technology company started by Groupon founder Eric Lefkofsky, just raised $110 million at a $2 billion valuation. The three-year-old Chicago-based company pulls together data on cancer patients on its platform, including genetic data from tumors and clinical data about how a patient is responding to treatment. The company plans to use the funding to expand its platform into other therapeutic areas. A startup that aims to make treating diseases more personalized just raised another $110 million.