What went into the decision - who knows?

Pulling an oral presentation a few days before an important meeting is a big deal. The company will have to have given a very good justification to the academics involved to deny them this opportunity to present their study to colleagues and peers. I can think of only one scientific reason why RVX would do it, and that's if they realised they'd made an error in what they had submitted to the organisers for presentation (for example if they said a certain result was significant but then found it wasn't). But that's extremely unlikely. The stats will have been done by professional statisticians using standard computer programs that do everything and double entry of data. So was it because there was a development of some sort behind the scenes e.g. an imminent deal with a buyer or partner who for some reason did not want the presentation to ahead? Why would a BP feel that way? Because the data that were to be presented would increase the SP days before inking a deal? Time will tell. All guesswork!