Shares of Corbus Pharmaceuticals Holdings (NASDAQ: CRBP) were up 40.1% as of 11:34 a.m. EDT on Thursday. The biotech announced earlier in the day that it had signed a deal with Jenrin Discovery LLC for exclusive worldwide rights to develop and market drugs based on more than 600 compounds targeting the endocannabinoid system.The licensing deal with Jenrin Discovery was huge for Corbus because it provides a big boost to the biotech's pipeline.