The expansion of the Prurisol trial to 25 sites should greatly speed up the clinical trial. I don't think it's fair to characterize this as "slow" given that 25 sites will bring the study to completion much faster -- and also will help reduce any potential problem with investigator non-compliance, since the results any site that doesn't adhere to protocol can be eliminated much more easily if it's only involving about 4% of the patients.

Here's the current list of sites (they show 23 but the previous press release said they'd be up to 25 by now):

https://clinicaltrials.gov/ct2/show/study/NCT...ocs=Y#locn