/clinicaltrials.gov/ct2/show/study/NCT02330653?term=NCT02330653&rank=1#contactsSomeone posted the above on another site. They are still actively recruiting in the US. I know the odd person posts on here in regards to a child with UC looking for alternatives to biologics.
Seems age range is 5-30 years of age. Contact information is on there if you scroll down.