>Is IDX184 first-in-class?< That depends on what the definition of class is :-) Seriously, I’m not aware of another HCV drug in development that’s a nucleotide prodrug with the properties that IDX184 has. Read the table in <a href='read_msg.asp?message_id=25836105'>#msg-25836105</a> and decide for yourself. Or, better yet, listen to the JPM webcast replay, which comes with very detailed slides.