Over the weekend, Celldex Therapeutics (CLDX 0.73%) released updated phase 2 data around its drug candidate CDX-011. Leveraging Seattle Genetics' (SGEN) proprietary drug-targeting technology, the drug displayed a statistically significant overall survival benefit to certain patients. Wall Street loved this news, and the stock was up 25% today. In this video, Motley Fool health care bureau chief Brenton Flynn tells us some of the possible applications of the drug if approved, and cautions that though this increases approval chances, the drug still has a long way to go before it gets to that stage.