My number 1 problem with GERN is that they have been a poster child for "unsaid" problems. You can (and I have) predict what problem they are going to announce next by what they have left unsaid earlier.
GERN I think it was the best talk I've heard so far and Scarlett basically said in the Q&A that he knew more of the status of the ongoing trial but didn't want to spoil the party for Tefferi at ASH..