"Apr 16: Northwest Bio plans to apply for fast track status in the US [18].
As has been pointed out to you, this has been said by NWBO for the last 3-4 years. The date you note is simply when some 3rd party reported the 10K text. Using this data is as meaningless as citing your post and stating it is news as of today.
As has been pointed out to you, "fast track" is not "AA". Fast track is normally applied for well before launching a P3. Is does not directly change the approval pathway, just greases the rail along the way.
AA allows for one to use a trial endpoint (such as possibly PFS here) that is faster than a clinical endpoint that could take years to play out. BUT you still must run a well controlled clinical trial to prove that endpoint. You can not make them up on the fly. This trial has PFS, then OS.