Well, for what it's worth, the important results should be known much sooner than 4 years from now. That doesn't change their cash situation, of course.
Seems likely; Merck furnishes free Keytruda for many phase-1/2 trials testing Keytruda plus another agent. Note that Keytruda doesn’t come into play until the ADXS-503 monotherapy dose-escalation portion of the trial is completed.