You are right. The pps could pop. However, first the company must find a ThermoDox treatment subgroup that showed a statistically significant clinical benefit over a similar subset from the control group. This may take a little time. There are reams of data to process. Statisticians are combing through the data with a fine toothe comb. If such a group can be found the pps will respond immediately.
In the meantime we do have three other clinical trials ongoing. Positive results and feedback from any of these trials will also have a positive impact on the stock price.