A Study to Investigate the Safety and Effectiveness of Different Doses of Sprifermin in Participants With Osteoarthritis of the Knee

Phase 2CompletedNCT01919164

EMD Serono Research & Development Institute, Inc.549 enrolled

Overview

This was a multicenter, randomized, double-blind, placebo-controlled, parallel-group Phase 2 trial of Sprifermin administered intra-articularly in participants with primary osteoarthritis of the knee and Kellgren-Lawrence Grade 2 or 3. The trial was intended to investigate the efficacy and safety of different intra articular dosages of Sprifermin in these individuals.

Participants were equally randomized to either one of 4 treatment arms or a placebo arm. The trial consists of a Screening period lasting up to 42 days, a two-year double-blind placebo-controlled (DBPC) treatment phase, which begins at randomization (Week 0) and ends at Year 2, and a 3-year extended follow-up phase.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

QUADRUPLE

Enrollment

549

Conditions

Osteoarthritis, Knee

Interventions

SpriferminDRUG

Participants received Sprifermin as intra-articular injection.

PlaceboDRUG

Participants received Placebo matched to sprifermin as intra-articular injection.

Eligibility

Sex: ALLMin age: 40 YearsMax age: 85 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Age from 40 to 85 years; of either sex * Primary femorotibial osteoarthritis according to American College of Rheumatology (ACR) clinical and radiographic criteria , and meeting protocol-specified X-ray criteria in the target knee at screening * Pain score in the target knee and/or the need for regular symptomatic treatment of knee pain with paracetamol (acetaminophen), systemic non-steroidal anti-inflammatory drugs (NSAIDs) including cyclooxygenase (COX)-2 selective inhibitors (coxibs), or tramadol on most days in the previous month (that is, more than half of the days in the previous month) * A history of pain due to Osteoarthritis in the target knee for at least 6 months * A protocol-specified pain score for the target knee in response to Question 1 of the WOMAC pain index ("how much pain have you had \[in the target knee, over the past 48 hours\] when walking on a flat surface?") after washout of at least 5 half-lives of analgesic medication(s): acetaminophen, topical or oral NSAIDS, coxibs, opioids, and/or tramadol * Women of childbearing potential must use a form of contraception with a failure rate of less than 1 percent per year throughout the trial Exclusion Criteria: * Malalignment of greater than 5 degrees in the femorotibial axis of the target knee * Clinical signs of inflammation (redness) in the target knee * Intra-articular administration of corticosteroids or hyaluronic acid into either knee within 6 months before Screening * Planned knee surgery (affecting either the target or the contralateral knee) within the next two years * Concomitant conditions or treatments deemed to be incompatible with trial participation * Any contraindication to MRI according to MRI guidelines, including the inability to undergo a knee MRI exam because of inability to fit in the scanner or knee coil * Pregnancy or breastfeeding * Participation in another clinical trial within the 30 days (or 5 half-lives of the investigated compound, whichever is longer) before screening * Legal incapacity or limited legal capacity

Locations (13)

Research site

Lakewood, Colorado, United States

Research site

Baltimore, Maryland, United States

Research site

Buenos Aires, Argentina

Research site

Outcomes

Primary Outcomes

Change From Baseline in Cartilage Thickness in the Total Femorotibial Joint as Evaluated by Quantitative Magnetic Resonance Imaging (qMRI) at Year 2

The change in cartilage thickness at 2 years was calculated based on quantitative magnetic resonance imaging (qMRI).

Time frame: Baseline, Year 2 (Week 104)

Secondary Outcomes

Changes From Baseline in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Pain Subscale, Stiffness Subscale, Physical Function Subscale and Total Score at Week 52, Week 78 and Week 104

WOMAC pain subscale consists of 5 questions (Likert Scale) relating to pain. Sum of items of pain subscale ranges from 0-11. Higher scores=worse pain. Stiffness subscale consists of 2 questions relating articular function. Sum of items of stiffness subscale ranges from 0-8. Higher scores=worse function. Physical function subscale consists of 17 question relating to physical activities. Sum of items of physical function subscale ranges from 0-68. Higher scores= worse functional limitations. Each sub-scale is directly transformed into a 0-100 scale, where higher score indicates worse condition. WOMAC total score(24questions) is sum of total subscales which was directly transformed into score range from 0-100. Higher scores=worse condition. Negative value in change is indicative of improvement.

Time frame: Baseline, Week 52, Week 78 and Week 104

Change From Baseline in the 20-meter Walk Test at Week 12, 26, 38, 52, 64, 78, 90 and 104

The 20-meter walk test is an objective test of physical function which consists of measuring the time needed for the participant to walk 20 meters at a normal pace. A stopwatch was used for time measurement.

Time frame: Baseline, Week 12, 26, 38, 52, 64, 78, 90 and 104

Change From Baseline in the Patient's Global Assessment (PGA) at Week 12, 26, 38, 52, 64, 78, 90 and 104

The Patient Global Assessment is based on participant's answer to the question "Considering all the ways your osteoarthritis of the knee has affected you during the last 48 Hours, select the number that best describes the impact of your knee osteoarthritis on your daily life", and can take on values between 0-10 (0=None, 10=Extreme), for summaries the values are rescaled to 0-100 by multiplication with 10. Higher scores indicated worsening of condition. A negative value in change in Patient's Global Assessment is indicative of an improvement.

Data from ClinicalTrials.gov

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