Safety, tolerability, and efficacy of LiRIS 400 mg in women with interstitial cystitis/bladder pain syndrome with or without Hunner lesions.

Two phase 2 studies were conducted to assess the efficacy and safety of lidocaine-releasing intravesical system (LiRIS) in patients with interstitial cystitis/bladder pain syndrome (IC/BPS) with (Study 001; NCT02395042) or without, (Study 002; NCT02411110) Hunner lesions (HL).

Both were multicenter, randomized, double-blind, placebo-controlled, and enrolled women aged ≥18 years. In Study 001, patients were randomized 2:1:1 to LiRIS 400 mg/LiRIS 400 mg, placebo/LiRIS 400 mg, or placebo/placebo for a continuous 28 (2 × 14)-day period. In Study 002, patients were randomized 1:1 to LiRIS 400 mg or placebo for a continuous (single treatment) 14-day period.

In total, 59 and 131 patients received treatment in Studies 001 and 002, respectively. There was no statistically significant difference in the primary endpoint, the change from baseline to Week 4 of follow-up post-removal in mean daily average bladder numeric rating scale (NRS) pain score in either study (Study 001: placebo/placebo, -1.6; LiRIS/LiRIS, -2.7, p = 0.142; placebo/LiRIS, -2.5, p = 0.319; Study 002: LiRIS -1.2; placebo, -1.5, p = 0.505). There was no statistically significant difference between groups in daily worst NRS pain score, number of micturitions/day or urgency episodes/day. There was no clear trend for reduction in number of HL for LiRIS vs placebo. The frequency of treatment-emergent adverse events was similar between treatment groups in both studies; most were mild or moderate intensity.

These studies did not demonstrate a treatment effect of LiRIS 400 mg compared with placebo, either in patients with IC/BPS with HL, or in those without HL.

Neurourology and urodynamics. 2021 Jul 20 [Epub ahead of print]

Robert Evans, Alfred Kohan, Robert Moldwin, Daniel Radecki, Till Geib, Kenneth M Peters

Urology, Wake Forest Baptist Hospital, Winston-Salem, North Carolina, USA., Bethpage Division, Advanced Urology Centers of New York, Bethpage, New York, USA., Urologic Infectious/Inflammatory Diseases, The Arthur Smith Institute for Urology, Lake Success, New York, USA., Specialty Development, AbbVie, Irvine, California, USA., Urology, Oakland University William Beaumont School of Medicine, Royal Oak, Michigan, USA.

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