Study TPX-100-5: intra-articular TPX-100 significantly delays pathological bone shape change and stabilizes cartilage in moderate to severe bilateral knee OA
| Autor: | Neil A. Segal, Michael A. Bowes, Yoshinari Kumagai, Alan Brett, Meghan Miller, David M. Rosen, Dawn Mcguire |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Cartilage
Articular medicine.medical_specialty WOMAC Knee Joint Diseases of the musculoskeletal system Osteoarthritis Chondroblast differentiation Placebo Internal medicine Machine learning medicine Humans TPX-100 Femur Retrospective Studies Bone shape business.industry B-score Cartilage Osteoblast Osteoarthritis Knee medicine.disease Magnetic Resonance Imaging Rheumatology DMOAD medicine.anatomical_structure RC925-935 Orthopedic surgery Nuclear medicine business Research Article |
| Zdroj: | Arthritis Research & Therapy Arthritis Research & Therapy, Vol 23, Iss 1, Pp 1-9 (2021) |
| ISSN: | 1478-6362 1478-6354 0192-5261 |
| Popis: | Background TPX-100, a promotor of osteoblast and chondroblast differentiation, is a potential osteoarthritis (OA) therapy. This retrospective study compared MRI 3D femoral bone shape changes (B-scores) after intra-articular TPX-100 or placebo and analyzed the relationship between cartilage thickness and bone shape change over 12 months. Methods One hundred and four participants with bilateral moderate to severe knee cartilage defects were randomized to receive TPX-100 (200 mg) or placebo. Each subject’s contralateral placebo-treated knee served as a paired internal control. After MRI quality control, 78/93 subjects (84%; 156 knees) were analyzed for quantitative femoral B-score and cartilage thickness. All analyses were performed centrally, blind to treatment assignment and clinical data. Results TPX-100-treated knees (n = 78) demonstrated a statistically significant decrease in pathologic bone shape change compared with placebo-treated knees at 6 and 12 months: 0.0298 (95% C.I. − 0.037, 0.097) vs 0.1246 (95% C.I. 0.067, 0.182) (P = 0.02), and 0.0856 (95% C.I. 0.013, 0.158) vs. 0.1969 (95% C.I. 0.123, 0.271) (P = 0.01), respectively. The correlation between bone shape change and medial and total tibiofemoral cartilage thickness changes at 12 months was statistically significant in TPX-100-treated knees (P < 0.01). Conclusions This is the first report of a potential therapy demonstrating a significant effect on bone shape measured by B-score in knee OA. These data, in combination with previously reported statistically significant and clinically meaningful improvements in WOMAC physical function versus placebo, support TPX-100 as a candidate for disease modification in knee OA. Trial registration NIH ClinicalTrials.gov, NCT01925261. Registered 15 August 2013 |
| Databáze: | OpenAIRE |
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