From what I have read, 3 first phase trials Clinical phase trial 1,2,3. From there I believe, it is a 2 part Phase 4 trial and if it passes and approved, offered to the public. The Drug pipeline for HCV is what I look for to read on progress. I dont think it is up-dated that fast, so you have to look for news reports like "Is this Real" did. When they first come out, you hear alot about them. Some fail by the end of phase 2, but dont' get much press because it is money to corporations. Some are bought by other companies, but thats how research and development goes to make profits. Some Generic Tx are trying to get on the market now to bring done prices, but they have met resistance.
|