The study is conducted in 2 parts: a randomized, blinded part in which subjects are assigned randomly (by chance) to LiRIS 400 mg or LiRIS placebo; subjects who complete this part and are eligible to continue, may participate in the open-label part in which all subjects receive LiRIS 400 mg.
In both parts of the study (blinded and open-label), LiRIS is inserted into the bladder during cystoscopy, remains in the bladder for 14 days, and is removed during cystoscopy. In addition to the 14 day period with the LiRIS/LiRIS Placebo, there is a screening period of up to 2 weeks and a follow up period of 4 weeks.