RT Journal Article T1 Adverse effects of xenogenic scaffolding in the context of a randomized double-blind placebo-controlled study for repairing full thickness rotator cuff tears A1 Lamas, José Ramón A1 García Fernández, Carlos A1 Tornero Esteban, Pilar A1 Lópiz Morales, María Yaiza A1 Rodríguez Rodríguez, Luis A1 Ortega Medina, Luis A1 Fernández Gutiérrez, Benjamín A1 Marco Martínez, Fernando AB Purpose: The purpose of the study was to compare the safety and efficacy of autologous mesenchymal stem cells (MSCs) embedded in a xenogenic scaffold for repairing the supraspinatus tendon. Methods: This was a randomized, double-blind and placebo-controlled trial evaluating patients with full-thickness rotator cuff tears (Eudra-CT, 2007-007630-19). Effectiveness was evaluated using the Constant score and a visual analogue pain scale (VAS). Constant score has four domains including pain (15 possible points), activities of daily living (20 possible points), mobility (40 possible points), and strength (25 possible points). Scores range from 0 points (most disability) to 100 points (least disability). The structural integrity of the repaired tendon was assessed by magnetic resonance imaging (MRI) according to Patte and Thomazeau classification criteria. The primary study end point was an improvement in the Constant score by 20 points at one year compared to initial assessment. Results: The trial was stopped due to adverse effects observed in both groups. Only thirteen patients were included and analyzed. The Constant questionnaire showed a significant improvement in the MSC treatment group compared with the preoperative data (p = 0.0073). Secondary outcome measures were similar in both groups. Conclusions: Our study showed preliminary inconclusive clinical outcomes in the patients treated with MSCs. Adverse events revealed the need for further approaches using scaffolds of a different nature or perhaps no scaffolds, in the context of small joints. Trial registration: Eudra-CT, 2007-007630-19. Registered on 30 January 2008. Level of evidence: A Level 1 of evidence treatment study. PB BMC. Springuer SN 1745-6215 YR 2019 FD 2019-07-01 LK https://hdl.handle.net/20.500.14352/107392 UL https://hdl.handle.net/20.500.14352/107392 LA eng NO Lamas JR, García-Fernández C, Tornero-Esteban P, Lópiz Y, Rodriguez-Rodriguez L, Ortega L, Fernández-Gutiérrez B, Marco F. Adverse effects of xenogenic scaffolding in the context of a randomized double-blind placebo-controlled study for repairing full-thickness rotator cuff tears. Trials. 2019 Jul 1;20(1):387. doi: 10.1186/s13063-019-3504-3. PMID: 31262366; PMCID: PMC6604436. NO Ministerio de Economia y Competitividad (España) NO Instituto de Salud Carlos III (España) DS Docta Complutense RD 20 ago 2024