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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00528931
Recruitment Status : Completed
First Posted : September 12, 2007
Results First Posted : August 20, 2012
Last Update Posted : October 5, 2017
Information provided by (Responsible Party):
Endo Pharmaceuticals

Brief Summary:

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 or disease Intervention/treatment Phase
Dupuytren's Contracture Biological: collagenase clostridium histolyticum Phase 1

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 16 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Other
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
Study Start Date : September 2007
Actual Primary Completion Date : December 2007
Actual Study Completion Date : March 2008

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: AA4500 0.58 mg Biological: collagenase clostridium histolyticum
Single dose of AA4500 0.58 mg into the cord
Other Names:
  • AA4500

Primary Outcome Measures :
  1. 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 :
  1. 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.

  2. 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.

  3. 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.

  4. 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

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
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.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00528931

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

Additional Information:
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Responsible Party: Endo Pharmaceuticals Identifier: NCT00528931     History of Changes
Other Study ID Numbers: AUX-CC-855
First Posted: September 12, 2007    Key Record Dates
Results First Posted: August 20, 2012
Last Update Posted: October 5, 2017
Last Verified: September 2017

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

Additional relevant MeSH terms:
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Dupuytren Contracture
Joint Diseases
Musculoskeletal Diseases
Muscular Diseases
Neoplasms, Fibrous Tissue
Neoplasms, Connective Tissue
Neoplasms, Connective and Soft Tissue
Neoplasms by Histologic Type
Connective Tissue Diseases