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A Pharmacokinetic Study of AA4500 (XIAFLEX™, Proposed Name) in Subjects With Dupuytren's Contracture

This study has been completed.
Information provided by (Responsible Party):
Endo Pharmaceuticals Identifier:
First received: September 11, 2007
Last updated: January 5, 2017
Last verified: January 2017

A Phase 1, open-label, single-dose pharmacokinetic study in subjects with Dupuytren's contracture conducted at one site in the United States. All subjects received a single dose of AA4500 0.58 mg, which was injected directly into the cord affecting either the metacarpophalangeal (MP) or proximal interphalangeal (PIP) joint. Pharmacokinetic blood samples were collected before dosing, at predetermined time points through the 24 hours after dosing, Day 7, and Day 30. Efficacy and safety assessments were performed up to 30 days after the AA4500 0.58 injection.

This study was designed to be part of the larger clinical program, for adult patients with Dupuytren's contracture with a palpable cord, where the data from 2 pivotal Placebo-Controlled studies (AUX-CC-857 [NCT00528606]and AUX-CC-859 [NCT00533273]) and 7 non-pivotal studies were evaluated.

Condition Intervention Phase
Dupuytren's Contracture Biological: collagenase clostridium histolyticum Phase 1

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Official Title: A Phase 1, Open-Label Study to Assess the Pharmacokinetics and Safety of a Single Injection of AA4500 0.58 mg in Subjects With Dupuytren's Contracture

Resource links provided by NLM:

Further study details as provided by Endo Pharmaceuticals:

Primary Outcome Measures:
  • Number of Subjects With AUX I and AUX II Detected in Their Blood After a Single Dose of AA4500 [ Time Frame: Before dosing, at predetermined time points through the 24 hours after dosing, Day 7, and Day 30 ]
    AUX I and AUX II are the constituent protein collagenases of collagenase clostridium histolyticum (AA4500). Plasma concentrations of AUX I and AUX II were assessed through an enzymye-linked-immunoabsorbent assay (ELISA).

Secondary Outcome Measures:
  • Clinical Success [ Time Frame: 30 days after treatment to the primary joint ]
    Clinical success defined as a reduction in contracture (ie, flexion deformity) to ≤5° of normal as measured by finger goniometry 30 days after an injection. Last observation carried forward (LOCF) after the injection was used if the status at day 30 could not be determined.

  • Clinical Improvement [ Time Frame: 30 days after treatment to the primary joint ]
    Clinical improvement defined as ≥50% reduction from baseline in contracture within 30 days of the injection. LOCF after the injection was used if the status at day 30 could not be determined.

  • Percent Change From Baseline Contracture [ Time Frame: Baseline, 30 days after treatment to the primary joint ]
    Change from baseline in the degree of fixed-flexion contracture calculated as 100 times (baseline contracture minus last available post-injection contracture measurement) divided by baseline contracture where a positive change indicates a reduction in the degree of contracture.

  • Change From Baseline Range of Motion [ Time Frame: Baseline, 30 days after treatment to the primary joint ]
    Range of motion defined as the difference between the finger extension angle and finger flexion angle expressed in degrees

Enrollment: 16
Study Start Date: September 2007
Study Completion Date: March 2008
Primary Completion Date: December 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: AA4500 0.58 mg Biological: collagenase clostridium histolyticum
Single dose of AA4500 0.58 mg into the cord
Other Names:
  • AA4500


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Subjects with a diagnosis of Dupuytren's contracture, with a fixed flexion deformity of at least one finger, other than the thumb, that had a contracture at least 20°, but not greater than 100° for MP (80° for PIP) joints, caused by a palpable cord.
  • Had a positive "table top test," defined as the inability to simultaneously place the affected finger(s) and palm flat against a table top.
  • Were naive to AA4500 treatment.
  • Were judged to be in good health.

Exclusion Criteria:

  • Had a chronic muscular, neurological, or neuromuscular disorder that affected the hands.
  • Had received treatment for Dupuytren's contracture within 90 days of the AA4500 injection to the MP or PIP selected, including surgery (fasciectomy or surgical fasciotomy), needle aponeurotomy/fasciotomy, or injection of verapamil and/or interferon on the selected primary joint within 90 days before the first dose of study drug.
  • Had a known recent history of stroke, bleeding, a disease process that affected the hands, or other medical condition, which in the investigator's opinion, would make the subject unsuitable for enrollment in the study.
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Please refer to this study by its identifier: NCT00528931

United States, California
Providence Clinical Research
Burbank, California, United States, 91505
Sponsors and Collaborators
Endo Pharmaceuticals
Study Director: Veronica Urdaneta, MD Endo Pharmaceuticals
  More Information

Additional Information:
Responsible Party: Endo Pharmaceuticals Identifier: NCT00528931     History of Changes
Other Study ID Numbers: AUX-CC-855
Study First Received: September 11, 2007
Results First Received: September 24, 2010
Last Updated: January 5, 2017

Keywords provided by Endo Pharmaceuticals:
Assessment of AUX I and/or AUX II in human plasma

Additional relevant MeSH terms:
Dupuytren Contracture
Joint Diseases
Musculoskeletal Diseases
Muscular Diseases
Connective Tissue Diseases processed this record on August 16, 2017