Study to Evaluate the Effect of FX006 on Synovial Inflammation in Patients With OA of the Knee

Pacira Pharmaceuticals, Inc129 enrolled

Overview

This is an open-label study assessing the effect of the administration of a single intra-articular (IA) injection of FX006 32 mg on synovial volume in patients with osteoarthritis (OA) of the knee.

This is an open-label study assessing the effect of the administration of a single intra-articular (IA) injection of FX006 32 mg on synovial volume in patients with osteoarthritis (OA) of the knee. The study will be conducted in male and female patients who are ≥ 40 years of age. Eligible patients who provide written consent and meet all entry criteria will undergo initial ultrasound examination and MRI with contrast of the index knee, and then receive a single IA injection of FX006 administered to the index knee at Baseline/Day 1. Patients will return to the clinic at Weeks 6 and 24 for an MRI with contrast of the index knee and other assessments. Patients must also have a blood sample drawn for Estimated Glomerular Filtration Rate (eGFR) testing within 30 days prior to the scheduled MRIs. In addition, a patient questionnaire will be administered and adverse events (AEs) and concomitant medication updates will be collected via telephone at Weeks 12 and 18.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

129

Conditions

Osteoarthritis, Knee

Interventions

FX006 32 mgDRUG

Extended-release 32 mg FX006 IA injection

Eligibility

Sex: ALLMin age: 40 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Written consent to participate in the study * Male or female ≥ 40 years of age * Body mass index (BMI) ≤ 40 kg/m\^2 * Ambulatory and in good general health * Willing and able to comply with the study procedures and visit schedules and able to follow verbal and written instructions * Willing to abstain from use of protocol-restricted medications during the study * Symptoms associated with OA of the index knee for ≥ 6 months prior to Screening (patient self-report is acceptable) * Currently meets American College of Rheumatology (ACR) Criteria (clinical and radiological) for OA * Kellgren-Lawrence (K-L) Grade 2 or 3 in the index knee based on X-ray performed during Screening (centrally read) Exclusion Criteria: * Any inflammatory arthritis including reactive arthritis, rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, arthritis associated with inflammatory bowel disease, gout or secondary OA from gout * History of infection or crystal disease in the index knee joint * Unstable index knee joint (such as a torn anterior cruciate ligament) within 12 months of Screening * Surgery or arthroscopy of the index knee within 12 months of Screening * IA corticosteroid (investigational or marketed) in any joint within 3 months of Screening * IA treatment of the index knee with hyaluronic acid (investigational or marketed) within 6 months of Screening * IV or IM corticosteroids (investigational or marketed) within 3 months of Screening * Oral corticosteroids (investigational or marketed) within 1 month of Screening * Any other IA drug/biologic in the index knee within 6 months of Screening or 5 half-lives (whichever is longer) (e.g., platelet rich plasma (PRP) injection, stem cells, prolotherapy and amniotic fluid injection) * Prior administration of FX006 * eGFR results \<40 mL/minute * Any contraindication to MRI Scanning (e.g., presence of certain ferromagnetic foreign bodies or electronic devices including most cardiac pacemakers, claustrophobia) * Known hypersensitivity to any form of radiographic contrast * Females who are pregnant or nursing or plan to become pregnant during the study; men who plan to conceive during the study

Locations (10)

TriWest Research Associates, LLC

El Cajon, California, United States

Biosolutions Research

La Mesa, California, United States

Dream Team Clinical Research (formerly located in Anaheim)

Pomona, California, United States

Outcomes

Primary Outcomes

Mean Standardized Change in Synovial Volume (SV) at 6 Weeks

Synovial volume (mm\^3) as measured by MRI and read by a central imaging vendor. Standardization was performed by dividing the model-derived least squares means and corresponding confidence intervals by the adjusted standard deviation (SD). Therefore, the mean standardized change represents the change in synovial volume expressed in standard deviation units.

Time frame: Baseline to Week 6

Secondary Outcomes

Mean Absolute Change in Synovial Volume at 6 Weeks

Mean absolute change from baseline at 6 weeks in synovial volume (mm\^3) as measured by MRI and read by a central imaging vendor. The least squares mean changes are estimated using a mixed effects model for repeated measures with fixed effects for study time point, study site, baseline score and baseline femur bone volume (mm\^3) and a random effect for patient.

Time frame: Baseline to Week 6

Mean Standardized Change in Synovial Volume (SV) at 24 Weeks

Time frame: Baseline to Week 24

Mean Absolute Change in Synovial Volume at 24 Weeks

Mean absolute change (mm\^3) from baseline at 24 weeks in synovial volume (mm\^3) as measured by MRI and read by a central imaging vendor. The least squares mean changes are estimated using a mixed effects model for repeated measures with fixed effects for study time point, study site, baseline score and baseline femur bone volume (mm\^3) and a random effect for patient.

Time frame: Baseline to Week 24

Data from ClinicalTrials.gov

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