The UPOINT phenotyping system can classify patients with interstitial cystitis according to clinically relevant domains. Increased symptom duration leads to a greater number of domains, and domains that function outside of the bladder (psychosocial, neurological, tenderness) predict a significant impact on symptoms. We hypothesize that the UPOINT system can direct multimodal therapy and improve outcomes.
A subtype of interstitial cystitis with Hunner lesions has worse bladder centric symptoms but did not show a distinct bladder centric phenotype. Given the management implications of distinguishing classic interstitial cystitis from nonHunner lesion bladder pain syndrome, we recommend cystoscopy with local anesthesia in patients diagnosed with interstitial cystitis/bladder pain syndrome.
OBJECTIVE
To report a multicentre, community based open‐label study designed to assess the efficacy and safety of intravesical sodium chondroitin sulphate in the treatment of patients with the clinical diagnosis of interstitial cystitis (IC). Chondroitin sulphate is a naturally occurring glycosaminoglycan (GAG) in the bladder mucus layer and changes in this GAG have been implicated in the pathogenesis of IC, and small single‐centre studies have suggested that intravesical chondroitin sulphate may have efficacy in IC.
PATIENTS AND METHODS
Patients with IC were treated with sodium chondroitin sulphate (Uracyst®, Stellar Pharmaceuticals Inc., London ON, Canada) solution 2.0% via urinary catheter weekly for 6 weeks and then monthly for 16 weeks for a total of 10 treatments. The primary efficacy endpoint was the percentage of responders to treatment as indicated by a marked or moderate improvement on a seven‐point patient Global Response Assessment (GRA) scale at week 10 (4 weeks after the initial six treatments) compared with baseline. A major secondary efficacy endpoint (durability) was the percentage of responders on the GRA scale after 10 treatments. Additional secondary efficacy objectives were differences from baseline in Patient Symptom/Problem Index scores over the course of the treatment compared with baseline.
RESULTS
In all, 47% of the 53 enrolled patients with long standing moderately severe IC (mean [sd, range] diagnosis of IC 3.0 [3.4, 0.1–16] years; duration of symptoms 9.2 [9.2, 1–39] years; baseline symptom score 14.2 [3.2]) were responders at week 10. At 24 weeks, 60% were responders. There was a statistically and clinically significant decrease in the mean (sd) symptom and bother scores from baseline at 10 weeks and 24 weeks, at 9.0 (4.3) and 8.1 (5.0), respectively (P < 0.001). There were no significant safety issues during the study.
CONCLUSIONS
This multicentre community based real‐life clinical practice study suggests that intravesical chondroitin sulphate may have an important role in the treatment of IC and validates the rationale for a randomized placebo‐controlled trial.
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