HD...allow me to explain how the SPA worked...
The notion you have:
FDA "needs to be confident that triglyceride lowering will result in cardiovascular risk reduction."
Is not the terms of the SPA. Factual proof by outcomes studies showing that trig lowering will or will not result in CVD is non existent. So prior to the SPA this was a controversial subject. Indeed even if studies did exist that suggested trig lowering was ineffective this would not disqualify Vascepa, because there might be (and are) differences in the way drugs lower trigs.
The intent of the SPA exception was to cover situations where either a new and very serious side effect/adverse reaction occurred after the trial began which would make the drug risk/benefit too high: or new scientific evidence that "proved" EPA added to statins was not going to lower CVD risk, by trig lowering or other means. Neither of these two crucial conditions was met.
Unstated in the SPA was the fact that in virtually every case imaginable, both the FDA and the sponsor would have agreed to terminate the trial, if a truly significant issue presented itself, because of either patient safety or futility..The fact the FDA wanted the trial..let the trial continue, is certain proof that no such "new significant issue" ever existed..
":>) JL