RECRUITING Phase 2 / Phase 3 ClinicalTrials.gov

Autologous BMA vs Saline and LAM + LP-PRP vs Saline Evaluations in Knee OA

Sponsor: University Health Network, Toronto • ClinicalTrials.gov ID: NCT05517434

Registry updated: 2026-08-27

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Description

ABLE OA is a Health Canada authorized (phase II/III) trial \[Parent Control #: 263591\]. A multi-center, prospective, double-blinded, randomized, placebo-controlled adaptive trial to evaluate the efficacy of two minimally manipulated autologous cellular preparations i) bone marrow aspirate (BMA) injection; and, ii) combined lipoaspirate micronized (LAM) and leukocyte poor (LP) platelet-rich plasma (PRP) injections for the treatment of knee osteoarthritis (OA). BMA, LAM from lipoaspirate (LA), and LP-PRP from whole blood will be prepared using the Cervos Marrow Cellution™ Bone Marrow Aspiration System, Cervos LIPO-PRO™ Adipose Transfer System, and Cervos KEYPRP Platelet Separator System, respectively. Patient-reported outcome (PRO) measures will be collected using web- or paper-based questionnaires administered at baseline (pre-injection) as well as at 3, 6 and 12 months (post-injection). Blood, synovial fluid, and urine samples will be collected at baseline pre-injection and 6 months post-injection only.

Interventions

Bone Marrow Aspirate (BMA): Minimally manipulated autologous cellular preparation (Biological)
Participants will undergo a bone marrow aspiration. About 10 mL of BMA will be collected from the posterior iliac spine i.e., ipsilateral and/or contralateral iliac crest using the Cervos Marrow Cellution™ kit. The BMA does not require processing using a centrifuge after collection. 9 mL (or less) of BMA is injected into the osteoarthritic knee joint after collection (Arm A, Study 1).
Saline (Placebo Comparator for BMA) (Other)
Participants will undergo a bone marrow aspiration to collect about 10 mL of BMA from the posterior iliac spine i.e., ipsilateral and/or contralateral iliac crest. However, 0.9% sodium chloride (NaCl) Baxter or equivalent (9 mL) is injected into the osteoarthritic knee joint (Arm C, Study 1).
Lipoaspirate Micronized + Leukocyte-Poor Platelet-Rich Plasma (LAM + LP-PRP): Minimally manipulated autologous cellular preparations (Biological)
Participants will undergo a lipoaspiration. 40 mL of lipoaspirate (LA) will be collected from subcutaneous adipose tissue. LA will be processed using the Cervos LIPO-PRO™ kit and a centrifuge. Participants will also undergo a blood draw. About 30 mL of whole blood will be collected from the antecubital fossa. Whole blood will be processed using the Cervos KEYPRP kit and a centrifuge. After processing, 9 mL (or less) of LAM is injected first followed immediately by 2 mL (or less) of LP-PRP into the osteoarthritic knee joint (Arm B, Study 2).
Saline (Placebo Comparator for LAM + LP-PRP) (Other)
Participants will undergo a lipoaspiration to collect 40 mL of LA and a blood draw to collect about 30 mL of whole blood. However, 0.9% of sodium chloride (NaCl) Baxter or equivalent is injected twice (9 mL + 2 mL) into the osteoarthritic knee joint (Arm D, Study 2).

Eligibility criteria

Inclusion Criteria: * Male or female at least 30 years of age at the time of screening * Willingness and ability to comply with study procedures and visit schedules and able to follow oral and written instructions * Signed consent for study participation * Baseline NPRS ≥ 4 points * Presence of chronic, symptomatic knee pain in at least one knee; if both knees are affected, the knee with greater severity will be selected for treatment * KL grade 2 or 3 knee OA based on standing knee X-ray assessment * Body mass index ≤ 30 kg/m2 Exclusion Criteria: * Approved anti-inflammatory therapy injections (corticosteroid, Synvisc, PRP, nSTRIDE-Autologous Protein Solution) within the previous 6 months in the knee * Major axial deviation (varus \>10°, valgus \>10°) * Any concomitant knee lesion causing pain or effusion (i.e., ligamentous or meniscal injury, osteochondral lesion) * Presence of clinically observed active infection in the index knee * Diagnosed with rheumatoid arthritis, Reiter's syndrome, psoriatic arthritis, gout, ankylosing spondylitis, or arthritis secondary to other inflammatory diseases; chondrocalcinosis, Paget's disease, or villonodular synovitis * Diagnosed with leukemia or other hematologic cancers, known presence of metastatic malignant cells, or ongoing or planned chemotherapeutic treatment * Presence of venous or lymphatic stasis in the index leg * A history of local anesthetic allergy * Medical conditions such as hemophilia or other blood clotting disorders * Arthroscopic knee surgery within the previous 6 months * Daily opioid use for the past 3 months, use of non-steroidal anti-inflammatory drugs within 1 week of the procedure, unable to hold anti-platelet medications * Use of systemic corticosteroids for treatment of a chronic medical condition within the past 3 months * Immunosuppression or acute infective processes Study Treatment Exclusion: * For Study 1: Inability to tolerate the bone marrow aspiration procedure resulting in insufficient collection of BMA (\<10 mL) after two successive aspiration attempts * For Study 2: Inability to tolerate the lipoaspiration procedure resulting in insufficient collection of LA (\<40 mL) after two successive aspiration attempts

Conditions

Osteoarthritis, Knee

Locations

Women's College Hospital — Toronto, Ontario, Canada
Toronto Western Hospital, University Health Network — Toronto, Ontario, Canada

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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