Study of AA4500 in the Treatment of Peyronie's Disease

Study Summary

This study is a Phase 3, double-blind, randomized, placebo-controlled study of the safety and efficacy of AA4500 0.58 mg in subjects with Peyronie's disease. Approximately 300 (200 AA4500 and 100 placebo) men will be randomized. Subjects will be screened for study eligibility within 21 days before the initial injection of study drug in the first treatment cycle. Before dosing, subjects will be stratified by degree of penile curvature (ie, 30º to 60º or 61º to 90º) and then randomized into two treatment groups to receive in a 2:1 ratio either AA4500 0.58 mg or placebo. In this study, qualified subjects may receive up to four treatment cycles; each cycle will be separated by a period of 42 days (± 5 days). During each treatment cycle, subjects will receive two injections of study drug with at least 24 hours but not more than 72 hours between injections. After the final injection of each treatment cycle, the investigator or qualified designee will model the penile plaque in an attempt to stretch or elongate the plaque. If the subject's penile curvature is reduced to \< 15 degrees after the first, second, or third cycle of injections or if the investigator determines further treatment is not clinically indicated (eg, adverse events; allergic reaction), subsequent treatment cycles will not be administered. Following the maximum of four treatment cycles, each subject will be followed for additional safety and efficacy assessments on Days 169 (± 7 days), 232 (± 7 days), 295 (± 7 days), 365 (± 7 days) (nominal weeks 24, 33, 42 and 52). Subjects randomized to placebo may receive open-label AA4500 treatment after completing this study as part of another protocol.

Primary Outcome

A negative value in the percentage change from baseline in penile curvature deformity (angle measured in degrees) indicates less curvature.

Conditions Studied

Interventions

• BIOLOGICAL Placebo
• BIOLOGICAL AA4500

Study Locations (20)