- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07562230
Rapid Construction of Tissue-engineered Skin for Repairing Difficult-to-heal Wounds
Rapid Construction of Tissue-engineered Skin for Repairing Difficult-to-heal Wounds: A Multicenter Real-world Study
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Type d'étude
Inscription (Estimé)
Phase
- N'est pas applicable
Contacts et emplacements
Coordonnées de l'étude
- Nom: Hu Zhicheng
- Numéro de téléphone: 87755766-8265
- E-mail: huzhch5@mail.sysu.edu.cn
Lieux d'étude
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Guangdong
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Guangzhou, Guangdong, Chine
- Recrutement
- The First Affiliated Hospital of Sun Yat-sen University
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Contact:
- The First Affiliated Hospital of Sun Yat-sen University
- Numéro de téléphone: 87755766-8265
- E-mail: huzhch5@mail.sysu.edu.cn
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Enfant
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
La description
Inclusion Criteria:
- All-age population
Wounds requiring surgical repair (single area 10-100 cm²): acute wounds (burns, traumatic defects, post-scar resection) OR chronic wounds (diabetic foot ulcers, pressure injuries, vascular ulcers)
Completed wound bed preparation (no necrotic tissue, infection controlled)
Signed informed consent and agreement to use tissue-engineered materials and long-term follow-up
Exclusion Criteria:
- History of allergy to allogeneic/xenogeneic tissue-engineered scaffolds or collagen materials
Severe immunosuppression (HIV/AIDS, long-term immunosuppressant use)
Malignant tumors, uncontrolled systemic infection (CRP > 50 mg/L), or organ failure (Child-Pugh Class C)
Mental illness preventing compliance with treatment or follow-up
Pregnant or lactating women
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Non randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Expérimental: Rapid Tissue-Engineered Skin Group
Rapid intraoperative construction of autologous EpiSCs-loaded scaffold + split-thickness skin graft (one-step or two-step procedure)
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Autologous split-thickness skin (0.15-0.2 mm) is harvested from the donor site at a donor-to-wound area ratio of 1:20-30.
The harvested skin is processed using a specialized cell sorter to isolate autologous epidermal stem cells (EpiSCs) with >93% viability within 30 minutes.
The cell suspension is adjusted to a concentration of ≥1×10⁶ cells/mL and loaded onto a tissue-engineered scaffold via spraying or immersion (3-5 minutes).
The cell-seeded scaffold is then applied to the wound bed.
Depending on wound condition: (1) One-step procedure: scaffold and a split-thickness skin graft (0.15-0.2 mm) are applied simultaneously; (2) Two-step procedure: scaffold is implanted first, followed by split-thickness skin graft at 14±3 days post-primary surgery.
Negative pressure wound therapy (-100 to -125 mmHg) is applied as needed.
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Comparateur actif: Traditional Composite Skin Graft Group
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The same tissue-engineered scaffold (without cell loading) is used.
Autologous split-thickness skin graft (0.15-0.2 mm thickness) is harvested.
The acellular scaffold is applied to the debrided wound bed followed by coverage with the split-thickness skin graft.
The surgical procedure, postoperative wound care, negative pressure wound therapy (-100 to -125 mmHg when indicated), and follow-up protocol are identical to those in the experimental arm.
This comparator represents the current standard of care for composite skin grafting in the participating centers.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Complete Wound Healing Rate
Délai: At 4 weeks post-surgery
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The percentage of participants achieving complete wound epithelialization (defined as 100% re-epithelialization without drainage or dressing requirements)
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At 4 weeks post-surgery
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Wound Recurrence Rate
Délai: 3, 6, 12 months post-surgery
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Incidence of wound recurrence at the healed site
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3, 6, 12 months post-surgery
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Scar Quality Assessment
Délai: 4 weeks, 3, 6, 12 months post-surgery
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Scar quality is assessed using the Vancouver Scar Scale (VSS) and the Patient and Observer Scar Assessment Scale (POSAS) at 4 weeks, 3, 6, and 12 months post-surgery.
The VSS total score ranges from 0 to 13, with higher scores indicating worse scar outcome (assessing vascularity, pigmentation, pliability, and height).
The POSAS includes two separate subscales: the Observer Scale (6 items, each scored 1 to 10, total range 6-60) and the Patient Scale (6 items, each scored 1 to 10, total range 6-60).
For both POSAS subscales, higher scores represent worse scar outcome.
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4 weeks, 3, 6, 12 months post-surgery
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Functional Recovery
Délai: 6, 12 months post-surgery
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Sweat test for assessment of sweat gland regeneration
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6, 12 months post-surgery
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Mortality Rate
Délai: 3, 6, 12 months post-surgery
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All-cause mortality
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3, 6, 12 months post-surgery
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Amputation Rate
Délai: 3, 6, 12 months post-surgery
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Incidence of amputation (for chronic wound patients)
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3, 6, 12 months post-surgery
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Healing Trajectory
Délai: 1, 2, 3 weeks post-surgery
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Wound healing rate at week 1, 2, 3; and time to complete healing
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1, 2, 3 weeks post-surgery
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Safety Outcome
Délai: From day of surgery through 12 months post-surgery
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Safety outcome is the incidence of postoperative complications (including infection, hematoma, and graft failure), adverse events, and serious adverse events, assessed from the day of surgery through study completion, an average of 12 months.
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From day of surgery through 12 months post-surgery
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Collaborateurs et enquêteurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 2026P-ZD025
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Informations sur les médicaments et les dispositifs, documents d'étude
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