All early stage biotechs have a continuous slow dive into bankruptcy. That is obviously because they burn money, and the moment that they can no longer raise money because they failed, they are, in fact, bankrupt. That is also why the short sellers continually short them.....most of them go to zero. If you do not know this, I suggest you read a book.
There are only two reason to long a stock like this. One, you plan to trade (i.e. sell) every spike that occurs on any silly little bit of hype. Two, you believe that the tech is real and will succeed and then some big mother will buy us for zillions. The only other game is to short it. You choose. Which game do you wish to play with this particular puppy. It is up to you.