It is not an "uplisting". This is a tier within otcmarkets that costs $15,000 so they can sell stock more easily. This is a stock marketing ploy invented by otcmarkets.com.
I think they have decided to save the $15,000.
I hope Camille comes out and explains.
In any event, if this stock has news about going to Phase 1 human trials then otcqb is a waste of time.