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Nanofat Injection and Fractional CO2 Laser for Post-Traumatic Atrophic Scars (NANOCO2-PTS)

30 juni 2026 uppdaterad av: Sameh Sarsik, Tanta University

Safety and Efficacy of Nanofat Injection and Fractional CO2 Laser: Monotherapy Versus Combined Therapy in Post-Traumatic Atrophic Scars

Post-traumatic atrophic scars are characterized by skin depressions caused by loss of collagen and can lead to cosmetic and psychological concerns. Several treatment options have been proposed, including fractional carbon dioxide (CO2) laser resurfacing and autologous nanofat grafting, both of which may improve scar appearance through skin remodeling and regeneration. This prospective comparative study evaluates the safety and efficacy of fractional CO2 laser alone, autologous nanofat injection alone, and combination therapy in patients with post-traumatic atrophic scars. Sixty participants were assigned to one of three treatment groups and were assessed using the Vancouver Scar Scale, physician global assessment, patient satisfaction, dermoscopic examination, and histopathological evaluation. The study aims to determine whether combining fractional CO2 laser and nanofat injection provides superior clinical and regenerative outcomes compared with either treatment alone while maintaining an acceptable safety profile.

Studieöversikt

Status

Anmälan via inbjudan

Betingelser

Intervention / Behandling

Detaljerad beskrivning

Post-traumatic atrophic scars are characterized by dermal collagen loss, epidermal thinning, and alterations in skin texture and pigmentation. These scars may result in significant cosmetic disfigurement and negatively affect patients' quality of life. Despite the availability of multiple treatment modalities, no single intervention has consistently demonstrated optimal efficacy.

Fractional carbon dioxide (CO2) laser induces controlled microthermal injury that stimulates collagen remodeling and skin regeneration. Autologous nanofat grafting, which is rich in adipose-derived regenerative cells and growth factors, has emerged as a promising regenerative treatment for improving skin quality and scar remodeling. Combining these two modalities may provide synergistic effects by enhancing tissue regeneration and improving both structural and aesthetic outcomes.

This prospective comparative study was conducted to evaluate and compare the safety and efficacy of fractional CO2 laser monotherapy, autologous nanofat injection monotherapy, and combination therapy in the treatment of post-traumatic atrophic scars. Clinical efficacy was assessed using physician evaluation, Vancouver Scar Scale scores, and patient satisfaction, while dermoscopic and histopathological examinations were performed to investigate treatment-induced structural changes and the mechanisms underlying scar improvement.

The study aimed to determine whether combined therapy offers superior clinical and regenerative outcomes compared with either treatment alone while maintaining an acceptable safety profile.

Studietyp

Interventionell

Inskrivning (Beräknad)

60

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

  • Egypten
    • Gharbia Governorate
      • Tanta, Gharbia Governorate, Egypten, 31527
        • Tanta University Hospital

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Nej

Beskrivning

Inclusion Criteria:

  • Male or female participants aged 12 years or older.
  • Presence of post-traumatic atrophic scar(s) of at least 6 months' duration.
  • No scar treatment received during the previous 6 months.
  • Willingness and ability to provide written informed consent (or assent with -parental/guardian consent for minors, according to local regulations).
  • Willingness to comply with study procedures and follow-up assessments.

Exclusion Criteria:

  • Hemoglobin <10 g/dL.
  • Active infection or viral skin disease.
  • Coagulopathy or hemophilia.
  • Current anticoagulant therapy.
  • Diabetes mellitus.
  • History of keloid formation.
  • History of malignancy or prior radiation therapy.
  • Immunosuppression.
  • Long-term systemic corticosteroid therapy.
  • Photosensitivity disorders.
  • Pregnancy or breastfeeding.
  • Renal or hepatic disease.
  • Systemic diseases affecting wound healing.
  • Thin patients with insufficient adipose tissue for adipose tissue harvesting.
  • Previous scar treatment within the preceding 6 months.
  • Use of systemic retinoids within the preceding 6 months. -Use of topical retinoids within the preceding 2 weeks.-

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Enda

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Aktiv komparator: Fractional CO2 Laser
Participants will receive three sessions of fractional carbon dioxide laser treatment at one-month intervals.
Enhet: Fractional CO2 Laser
Fractional ablative carbon dioxide laser (10,600 nm) administered in three sessions at one-month intervals for treatment of post-traumatic atrophic scars.
Andra namn:
  • Fractional Carbon Dioxide Laser
Aktiv komparator: Autologous Nanofat Injection
Participants will receive one session of autologous nanofat injection for treatment of post-traumatic atrophic scars.
Biologisk: Autologous Nanofat Injection
A single session of intradermal injection of autologous nanofat prepared from centrifuged and mechanically emulsified adipose tissue for treatment of post-traumatic atrophic scars.
Andra namn:
  • Autologous Nanofat
Aktiv komparator: Fractional CO2 Laser + Autologous Nanofat Injection
Participants will receive three sessions of fractional carbon dioxide laser at one-month intervals followed by one session of autologous nanofat injection.
Enhet: Fractional CO2 Laser
Fractional ablative carbon dioxide laser (10,600 nm) administered in three sessions at one-month intervals for treatment of post-traumatic atrophic scars.
Andra namn:
  • Fractional Carbon Dioxide Laser
Biologisk: Autologous Nanofat Injection
A single session of intradermal injection of autologous nanofat prepared from centrifuged and mechanically emulsified adipose tissue for treatment of post-traumatic atrophic scars.
Andra namn:
  • Autologous Nanofat

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Change in Vancouver Scar Scale Score
Tidsram: Baseline and 3 months after completion of treatment
The change in scar severity assessed using the Vancouver Scar Scale (VSS), including vascularity, pigmentation, and pliability, from baseline to the post-treatment assessment.
Baseline and 3 months after completion of treatment

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Physician Global Assessment of Clinical Improvement
Tidsram: 3 months after completion of treatment
Clinical improvement evaluated by three blinded dermatologists using a quartile grading scale (poor: 0-25%, fair: 25-50%, good: 50-75%, excellent: 75-100% improvement).
3 months after completion of treatment

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Tanta University

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

28 juni 2026

Primärt slutförande (Beräknad)

1 juni 2027

Avslutad studie (Beräknad)

30 juni 2027

Studieregistreringsdatum

Först inskickad

25 juni 2026

Först inskickad som uppfyllde QC-kriterierna

25 juni 2026

Första postat (Faktisk)

1 juli 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

2 juli 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

30 juni 2026

Senast verifierad

1 juni 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • TANTA-33465-11-19
  • TU-DERM-PTAS-2020-01 (Registeridentifierare: Internal Protocol Number)
  • 33465/11/19 (Annan identifierare: Ethics Approval Number)

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

NEJ

IPD-planbeskrivning

Individual participant data will not be shared publicly because participant consent for public data sharing was not obtained and the dataset contains potentially identifiable information.

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

produkt tillverkad i och exporterad från U.S.A.

Nej

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