@grandslam... Their filings with the SEC over the past year or so suggest that an investor or an insider has been keeping them afloat while they await IPO funds. I have no idea if that is sustainable, and, if it is, for how long. I think your question is reasonable -- they haven't updated their web site in months, and they seem committed to silence. At first, the actions of the new CEO seemed reassuring, but the guy has been invisible to investors. We literally have no reason to believe that he is still involved, or capable of communicating, or alive, for that matter.
This can't go on forever. It does feel like we're reaching either the end of the road, or some significant existential event. I suppose there's always a chance that they are in negotiations to be acquired. Short of that, I don't hold out much hope for ever seeing the money I invested. In the vast picture of our civilization, it is borderline criminal new and promising medical technologies are completely ignored, while we waste billions of dollars on consumer advertising of pharmaceuticals that consumers can't even buy. It's a very screwed up world.