Xiaflex® Plus Testosterone Treatment Pilot Study Protocol

During this single-center pilot study, there will be one subject group consisting of men with Peyronie's disease and testosterone deficiency. Subject age range will be 18-70 years. Each subject will participate for approximately 6 months. All 20 subjects will receive Xiaflex® plus T treatment (Aveed®). Data collected from this pilot project will be analyzed and compared to historical data regarding treatment for PD using Xiaflex® only. The eligibility criterion for 2 samples of total testosterone (\<350ng/dL) or free testosterone (1.5 ng/dL analog assay or 100pg/mL calculated free testosterone) was chosen with the aim of demonstrating what the effect of testosterone treatment is on men that fall into the low range. The remainder of the inclusion and exclusion criteria are designed to select subjects for whom protocol treatment is considered appropriate. All relevant medical and non-medical conditions will be taken into consideration when deciding whether this protocol is suitable for a particular subject.