(148) Comparison of Collagenase Clostridium Histolyticum to Surgery for the Management of Peyronie’s Disease: A Randomized Trial
Authors: Warner J , Green B , Anderson N , Savage J , Brearton K , Ziegelmann M , Helo S , Kohler T , Trost L 
Published: May 2023

Abstract

Introduction
Since the FDA approval of Collagenase Clostridium Histolyticum (CCH) for the treatment of Peyronie’s Disease (PD), there has been significant debate as to its role and comparable efficacy in relation to surgical therapies. Specifically, investigators have compared relative utilization, costs, and outcomes with varying conclusions.

Objective
To compare various objective and subjective outcome measures between men undergoing CCH or surgery for PD.

Methods
A randomized, controlled trial (NCT04786106) is ongoing. Participants are randomized 1:1 to receive either CCH + traction (RestoreX) + sildenafil or penile surgery (plication and/or incision and grafting) + traction + sildenafil for PD. Objective, standardized (International Index of Erectile Function [IIEF] and Peyronie’s Disease Questionnaire [PDQ]), and non-standardized assessments are obtained at baseline, and post-treatment at 3, 6, 12, 24, 36, 48, and 60 months. Key outcomes include differences in standardized questionnaires, penile curvature, penile length, subsequent interventions, and non-standardized questionnaire responses. Curvature is measured in two planes and summed to provide a composite curvature. Penile length is measured from pubic symphysis to corona. All therapies were stopped prior to the 3-month time point (i.e. traction and sildenafil).

Results
A total of 40 men have been randomized, with 3-month data available on 27 men (CCH=14, surgery=13) and 12-month data on 15 men (CCH=5, surgery=10). Mean age at enrollment was 54.9 years, PD duration 36.6 months (mo), composite curvature 72.3 degrees (deg), and penile length 12.7 cm. All baseline variables were statistically similar between cohorts. Regarding the primary outcome, post-treatment, CCH men reported higher overall satisfaction (3-months: 100% vs 88% surgery, p=0.16; 12-months 80% vs 70%, p=0.52). For secondary outcomes at 3 months, the median differences between CCH and surgery respectively were: IIEF-EFD (+3.5 vs +7, p=0.64), PDQ-physical (-10 vs -7, p=0.47, note: lower is better for PDQ scales), PDQ-pain (-2 vs -0.5, p=0.21), PDQ-bother (-4.5 vs -8.5, p=0.60), length change (+1.0 vs -0.5 cm, p&lt;0.01), curvature absolute change (-26 vs -65 degrees, p=0.01), and curvature percentage improvement (46% vs 84%, p&lt;0.01). More CCH men felt that treatment improved sexual function (86% vs 79%, p=0.45), erectile function (64% vs 56%, p=0.04), penile length (36% vs 6%, p&lt;0.0001), and had less impact on sensation (14% less sensation vs 56%, p&lt;0.01), while surgery men were more likely to report satisfaction with curvature (75% vs 64%, p=0.52). 100% of men in both groups would recommend treatment to a friend at 3 months, whereas 100% of CCH vs 70% of surgery men would recommend their therapy at 12 months. When asked which treatment they would pick if they could start again, at 3 months 100% of CCH men reported CCH and/or traction, while 79% of surgery men indicated surgery.

Conclusions
Preliminary data suggests that, when compared to surgery, CCH results in higher overall satisfaction (not statistically significant), decreased curve improvement, improved penile length, and fewer impacts on erectile function and sensation.

Disclosure
Yes, this is sponsored by industry/sponsor: Endo Pharmaceutical

Clarification
Industry funding only - investigator initiated and executed study