Double-blind, Randomized, Placebo-controlled Trial of Etanercept for 12 Months in Subjects With Inclusion Body Myositis

Inclusion body myositis (IBM) is the most common late onset acquired muscle disease. Patients develop progressive weakness that may result in the need for assistive devices including a wheelchair. IBM may be due to abnormal immune activation, due in part to overproduction of tumor necrosis factor (TNF)-alpha. Etanercept blocks the activity of TNF-alpha, thereby blunting immune overactivation. Previous unblinded studies and case reports suggest that etanercept may improve strength or slow the progressive weakness in IBM. We are conducting a double-blind, randomized, placebo-controlled study to test if Etanercept is beneficial in slowing the progressive weakness in patients with IBM.

Study Overview

• Status: Completed
• Conditions: Inclusion Body Myositis
• Intervention / Treatment: Drug: Etanercept

Detailed Description

Travel expenses not covered by the study.

• Study Type: Interventional
• Enrollment (Actual): 20
• Phase: Early Phase 1

Contacts and Locations

Study Locations

• United States
  • Missouri
    • Saint Louis, Missouri, United States, 63110
      • Washington University Department of Neurology

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 80 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• A clinical diagnosis of definite or probable IBM.
• Male or female aged 18-80.
• Subjects must be able to provide informed consent.
• Subjects must be on no immunosuppressive medication for 3 months and agree not to take immunosuppressive medication during the study.
• Subjects must not be on sulfasalazine
• Subjects or caregivers must be able to administer SQ medication.
• Women of childbearing potential (not postmenopausal or surgically sterile) must have a negative pregnancy test at screening and be using adequate birth control.
• Absence of exclusion criteria.

Exclusion Criteria:

• Exposure to etanercept within 3 months of study entry
• Exposure to other investigational drugs within 3 months of study entry.
• Subject with known hypersensitivity to etanercept.
• Subject with active medical or psychiatric condition that in the opinion of the principal investigator, may affect the interpretation of the safety and efficacy data or which otherwise contraindicates participation in the study.
• Signs, symptoms or laboratory evidence of severe renal, pulmonary, hepatic, neurologic, or cardiac (congestive heart failure, or coronary artery) disease, including creatinine > 2.0, LFT > 2x the upper limit of normal and hemoglobin < 12.5 (male) and < 11.0 (female).
• Subject with weakness from any other neurological or neuromuscular disease, including multiple sclerosis or other CNS demyelinating disease.
• Subject with sepsis or any active, chronic, or local infection or on antibiotic, antiviral or antifungal medication within 3 months prior to the first dose of Etanercept.
• A prior history of tuberculosis and/or a positive PPD skin test at screening (including reading of borderline, reactive but non-diagnostic) or prior inoculated subjects.
• Human immunodeficiency virus infection.
• Subject with history of opportunistic infection.
• Subject with a known history of anti-Jo-1, anti-SRP or anti-MI-2 antibodies.
• The presence of an associated connective tissue disease, including systemic lupus erythematous, Sjögren's syndrome, scleroderma or mixed connective tissue disease.
• History of a new diagnosis or treatment of invasive malignancy within 5 years of enrollment, including patients with a history of squamous cell carcinoma or basal cell carcinoma.
• History of drug or alcohol abuse within 1 year prior to study entry.
• Unwillingness to practice effective contraception, except for female patients who are post-menopausal or surgically sterile. The rhythm method is not to be used as the sloe method of contraception.
• Subjects are not to receive live vaccines while in the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Single Group Assignment
• Masking: Quadruple

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Etanercept	Drug: Etanercept; 50 milligrams subcutaneously every week; Other Names: Enbrel

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Change in Quantitative Muscle Testing on 12 proximal and 12 distal muscles	12 months

Collaborators and Investigators

• Sponsor: Washington University School of Medicine
• Collaborators: Amgen
• Investigators: Principal Investigator: Glenn Lopate, MD, Washington University School of Medicine

Study record dates

Study Major Dates

• Study Start: April 1, 2005
• Primary Completion (Actual): May 1, 2014
• Study Completion (Actual): May 1, 2014

Study Registration Dates

• First Submitted: December 4, 2008
• First Submitted That Met QC Criteria: December 4, 2008
• First Posted (Estimate): December 5, 2008

Study Record Updates

• Last Update Posted (Estimate): May 29, 2014
• Last Update Submitted That Met QC Criteria: May 28, 2014
• Last Verified: May 1, 2014

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Nervous System Diseases; Musculoskeletal Diseases; Muscular Diseases; Neuromuscular Diseases; Myositis; Myositis, Inclusion Body; Physiological Effects of Drugs; Peripheral Nervous System Agents; Analgesics; Sensory System Agents; Anti-Inflammatory Agents, Non-Steroidal; Analgesics, Non-Narcotic; Anti-Inflammatory Agents; Antirheumatic Agents; Immunosuppressive Agents; Immunologic Factors; Gastrointestinal Agents; Etanercept
• Other Study ID Numbers: 20031148