doesn’t seem to really help too much

I don't know, it perhaps does mean something especially considering traditional cigarettes result in detectable changes in the time frame of this study. But yeah, clearly longer term studies will be much more informative.

Do you know if Philip Morris or BAT or someone is running long-term trials?

Nope, I don't. I just sort of stumbled upon this article when perusing literature, so I didn't know about any of this at all until recently. I honestly had not thought about vaping much before.

Thanks for reading, sorry I am not of more help in this reply!