@tryingtoprep - I've been keeping an eye on the trials registers (there's a few of them - repositories where records of planned randomised controlled trials are put so that trials are publicly accountable and report findings whether positive or null). Lots of trials ongoing, following some positive bench-science (in vitro) work that was publicised at the end of Feb. To my knowledge none of the big trials of chloriquine etc. has reported results yet - it is all moving extraordinarily fast in research time (normally takes about 9 months to get ethics permission to even start recruiting!) but it is too soon to know one way or another.
What we can hope for is that a drug shows so much promise that they end up stopping the trial before the end because it would be unethical to continue with placebo ... Having said that, several trials that I have come across are trialling different doses of the same drug as comparators, so there are fewer placebo-controlled trials out there than if this was a less serious situation. Still, I think we have reason to be hopeful that the Gilead drug in particular will help (albeit I am not a fan of that specific pharmaceutical company in more general terms).
It would be great if chloroquine works though as is off patent, cheap as chips and may well be available in some of the poorer countries where this disorder is likely to hit due to its antimalarial role. Unfortunately less of it is being produced than it used to as many types of mosquitos have become resistant to its action - but it is still being made. And, I should add, appears to be largely sold out online!
I am not an expert in this specific area (pharmaceuticals). I have however managed RCTs.