Retreatment of Recurrent Dupuytren's Contractures

Retreatment of Recurrent Contractures in Joints Effectively Treated With AA4500 (Collagenase Clostridium Histolyticum [XIAFLEX®/XIAPEX®]) in an Auxilium-sponsored Phase 3 Study in the United States, Australia, and Europe

The objectives of this study are to assess the safety and efficacy of AA4500 in the retreatment of recurrent contractures in joints that were effectively treated with AA4500 in a previous Auxilium-sponsored Phase 3 study.

Open-label, Phase 4 study in subjects who are currently participating in the long-term follow-up study (ie, AUX-CC-860) in the United States, Australia, or Europe and who have recurrence of contracture (ie, joint contracture increases by at least 20 degrees compared with the Day 30 value after the last injection in a Phase 3 Auxilium-sponsored study and a palpable cord present) in a joint that was effectively treated (ie, reduction in contracture to 5 degrees or less 30 days after the last injection) with AA4500 in a Phase 3 Auxilium-sponsored study.

Subjects who experience recurrence of contracture in one or more effectively treated joints may be enrolled in this retreatment study after the investigator determines subject eligibility and after informed consent has been obtained. The investigator will treat the cord affecting the recurrent joint with up to three injections. Only one recurrent joint will be treated in this study.

Inclusion Criteria:

1. Provide written informed consent

2. Be currently participating in the AUX-CC-860 follow-up study

3. Have at least one joint with all of the following:

   • The joint was effectively treated (had a correction to 5 degrees or less at the Day 30 evaluation after the last injection of AA4500) in a previous Auxilium Phase 3 study
   • The effectively treated joint has an increase in contracture of at least 20 degrees compared with the Day 30 value after the last injection of AA4500 in a previous Auxilium Phase 3 study
   • A palpable cord is present in the joint to be treated

4. Be able to comply with the study visit schedule as specified in the protocol

Exclusion Criteria:

1. Is a pregnant or lactating female or female intending to become pregnant during the study
2. Has hypersensitivity to AA4500 or any of the AA4500 excipients
3. Is currently receiving or plans to receive anticoagulant medication or has received anticoagulant medication (except for equal to or less than 150 mg aspirin daily and over-the-counter nonsteroidal antiinflammatory drugs [NSAIDs]) within 7 days before injection of AA4500