INTRODUCTION: Intralesional collagenase METHODS: This study examined efficacy of intralesional CCH in a racially diverse population in a large integrated health care system over 15 years. Treatment efficacy was defined as percent change in penile curvature abnormality from baseline after up to 4 treatment cycles. RESULTS: Of the 112 patients with PD who underwent CCH therapy, 66.1% of men were White, 22.3% were Hispanic, and 9.8% were Black. Additionally, 63.4% of men had a baseline penile curvature of 30°-59°. There were no significant differences in treatment response to CCH across different racial and ethnical groups ( DISCUSSION: This is the largest postmarket analysis of CCH treatment outcomes in a racially diverse PD population. Though there were no significant differences in treatment outcomes by race and ethnicity, Hispanic men were significantly less likely to complete 4 cycles of injection therapy. One possible explanation is a language barrier, which prevented future follow-up treatment. CONCLUSION: The use of CCH treatment for PD is an effective option for racially diverse patient populations.