Remember MRK doesn't need to run around making announcements .They don't need the money so they have held their cards closer to the vest, from the beginning VERTEX has made much more noise because it helps with raising money.We will see the data soon enough.Don't be surprised if Mrks product wont show a little bit more efficacy but slight more side effects mostly anemia which can be managed with Epoetin alfa . I think both products will do very well and both will be successful.