Thanks for the thoughtful response Max, and I appreciated your separate write-up on this subject.
I do want to highlight though that in his write-up, Kyle listed the improved regulatory environment for updated mRNA vaccines as a reason why Alvea decides not to proceed with your first vaccine candidate. That’s really what I was addressing with my comment.
As to the second point about lack of efficacy for plasmid vaccines, I think there were different opinions on this within Alvea. One high ranking person I spoke to gave me the opinion that poor performance of a competitor COVID plasmid vaccine was due to competitor incompetence rather than an issue with plasmid vaccines themselves. That sort of comment is why I mentioned my concern that there may of been a degree of contempt among some in Alvea for big pharma.
Totally agree as to the “practical” efficacy of the adenovirus vaccines though!
Thanks for that additional context Mats. I did want to follow up on US vs ex-US P1 trials.
At this point, Pfizer and Moderna have consistently gotten mRNA vaccines into US trials in ~2 months after receiving a new sequence. Are the timelines to starting a trial in Australia/South Africa/elsewhere considerably shorter?
As a comment, big pharma does perform vaccine trials in the global South, although this is more about seasonality than speed. Pfizer performed a major P1/P2 trial for their RSV vaccine in Australia, because the timing of RSV season in Australia matched well with the development timelines for the drug.
One of the main arguments I see in favor of US or EU P1 trials is that the FDA/EMA are the most sophisticated regulatory agencies, and will provide more useful feedback on your development plan than other agencies. This is particularly relevant if you intend to eventually market a drug in the US, since the FDA only accepts foreign trial data if the study was conducted according to FDA requirements. Since Alvea wasn’t really targeting the US market, this is less of a consideration. Still, what do you make of this argument?
I’d also mention that once you get to the P3/BLA stage, filling in a country with a less sophisticated regulatory agency can be a burden. My own experience is that FDA/EMA/Japan are more willing to let sponsors deviate from official guidelines if there is a good scientific justification. Meanwhile, other agencies lack the expertise to assess drugs on the merits and will fall back to saying that you must follow the guidelines. For instance, I’ve been in the maddening position before of having agencies in small countries repeatedly cite FDA guidance to argue that we need to make some change to our plans, despite the fact that our drug was already approved by the FDA without said change!