The purpose of this study is to assess NEO6860, a modality selective TRPV1 antagonist, in patients with pain associated with osteoarthritis of the knee.
The study will be randomized, double blind, placebo and active control, a 3-way, 3-period crossover design, where each of the estimated 50 enrolled patients will receive alternately (i) NEO6860 (500 mg bid), (ii) placebo and (iii) Naproxen (500 mg bid). To ensure blinding, double dummy techniques will be used, so that at each period, patient will receive an oral liquid suspension (NEO6860 or its placebo) and one capsule (naproxen or its placebo). Following a screening period, a maximum of 28 days before dosing, subjects will be randomized to one of the scheduled sequences. At each dosing period, subjects will be requested to participate in 2 clinic visits: * One residential visit, the morning of investigational product dosing. Subjects will stay in the Clinical Research Unit approximately 13 hours * One end of period visit, 24 h after first dosing A total of 2 washout periods of 1 to 3 weeks will separate the dosing periods. Once the 3 dosing periods will be completed, the subjects will come back to the clinic for a follow up visit (7 to 10 days post last dose). Note: for a subpopulation, at one site, an assessment of heat pain threshold and tolerance will be conducted requiring a residential period of approximately 24 hours.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
54
Diex Recherche Montreal Inc
Montreal, Quebec, Canada
Algorithme Pharma
Montreal, Quebec, Canada
Diex Recherche Sherbrooke Inc
Sherbrooke, Quebec, Canada
Mean change in Numerical Rating Scale (NRS, 0-10) from baseline after the staircase test to 8 hours post first dose after the staircase test on the index knee.
Patients are asked to step fully up onto a 8-inch (20 cm) high platform with both feet and back down a total of 24 times.
Time frame: 8 hours post dosing. This endpoint will be collected 3 times, 8 hours post dosing for each period: NEO6860, naproxen and placebo.
WOMAC 3.1 Index Likert pain subscale
Time frame: from baseline (screening) to 24 hour recall post 1 day treatment at each of the 3 periods
Patient's Global Impression of Change (PGIC)
Time frame: 24 hour post 1 day treatment at each of the 3 periods
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
inactive substance