(260) Further Characterizing Treatment Success with Intralesional Collagenase for Peyronie’s Disease

Abstract

Abstract Introduction Intralesional Collagenase Clostridium histolyticum (CCH) is approved for men with Peyronie’s Disease (PD). Most studies use curve improvement ≥ 20% to define treatment success. Objective Here, we sought to further characterize objective and subjective treatment outcomes with CCH. Methods We reviewed our prospectively maintained database for all patients who underwent CCH at our institution from 2013 through the present. We specifically identified those who completed four series of CCH (or elected to discontinue prior to completing four series due to satisfactory penile straightening or lack of results) and had available curvature assessment data. Treatment outcomes were broken down by level of curve improvement (0%, 10%, 20%, 30%, and > 40% improvement). Treatment success was also evaluated by improvements in the ability to engage in penetrative sexual intercourse and perceived surgery avoidance. Statistical analyses were performed using JMP Pro 14.1.0 (SAS Institute, Cary, NC). Results 127 patients had complete data available. The mean age was 57 years (SD 8.4). The mean PD duration was 27 months (SD 59). The mean baseline curvature was 66.1O, and the mean post-treatment curvature was 45.1O (p<0001). The mean curvature improvement was 32% (SD 33). 68% of patients achieved a 20% or greater improvement in penile curvature, including 38% who achieved ≥ 40% improvement. 72% (n=48/67) felt that CCH prevented the need for surgery, and 68% reported CCH restored the ability to penetrate. Stretched flaccid penile length (SPL) increased by ≥ 1 cm in 50% of patients who used concurrent penile traction (PTT) and CCH, including 28% of patients who experienced ≥ 2 cm of length gain. In contrast, only 16% of patients who did not perform concurrent PTT had a ≥ 1 cm increase in SPL (p<0.0001). Conclusions CCH may restore the ability to penetrate with intercourse, and most patients feel that CCH prevents the need for surgery. Almost 40% of patients experienced a 40% or greater curvature improvement. However, 13% of patients may go through the entire series with minimal improvement. Concurrent PTT allows for simultaneous penile length gain in some patients. These data are helpful when counseling patients on expected outcomes. Disclosure No