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Effect of an Intraoperative Polynucleotide Injection on Scar Quality After Thyroidectomy and Parathyroidectomy

27. August 2026 aktualisiert von: Koray Islek, Dr. Lutfi Kirdar Kartal Training and Research Hospital

The goal of this clinical trial is to learn whether a single polynucleotide injection can improve scar quality after thyroid or parathyroid surgery in adults. It will also assess the safety of the injection.

The main questions this study aims to answer are the following:

Does a single polynucleotide injection improve scar quality 24 weeks after surgery? Does it improve scar appearance and symptoms such as pain, itching, hardness, or tightness? Are there any side effects or wound problems related to the injection? Researchers will compare PLINEST One PN-HPT, a solution containing polynucleotides, with sterile saline, which does not contain polynucleotides.

After the surgical incision is closed, participants will receive one injection along the incision line. Participants will be randomly assigned to receive either PLINEST One PN-HPT or saline.

Scar healing and appearance will be checked after surgery. Formal scar assessments will be performed at 4, 12, and 24 weeks. Scar quality will be assessed using patient and researcher scar rating scales, scar measurements, photographs, symptoms, and participant satisfaction.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This is a prospective, single-center, two-arm, parallel-group, randomized, placebo-controlled clinical trial designed to evaluate the effect of a single intraoperative polynucleotide injection on postoperative scar quality after open thyroidectomy, thyroid lobectomy, or parathyroidectomy.

A total of 80 participants will be randomly assigned in a 1:1 ratio to either the polynucleotide group or the placebo group using a computer-generated randomization list. Participants assigned to the intervention group will receive PLINEST One PN-HPT (Polynucleotides Highly Purified Technology). Participants assigned to the control group will receive sterile 0.9% sodium chloride solution.

The study solution will be administered immediately after completion of skin closure and before the final surgical dressing is applied. In both groups, the total injection volume will be calculated according to incision length at 0.5 mL per centimeter. The solution will be distributed evenly along the entire incision line using a 34-gauge needle and will be injected intradermally or into the superficial subdermal plane. The placebo will be administered using the same volume, anatomical plane, needle size, syringe type, and injection pattern as the active treatment.

Study solutions will be prepared in coded syringes by a member of the research team who is not involved in postoperative scar assessment. Participants, postoperative scar assessors, and the researcher performing the statistical analysis will be blinded to treatment allocation. If differences in injection characteristics make treatment allocation apparent to the person administering the injection, that individual will not participate in postoperative assessments or data analysis.

Surgical skin closure and postoperative wound care will be standardized between the two groups to reduce factors that could affect scar formation.

Participants will undergo preoperative assessment and postoperative evaluations on day 1, days 7 to 10, and at weeks 4, 12, and 24. An optional long-term assessment may also be performed at week 52. Standardized digital photographs will be obtained using consistent lighting, camera distance, participant position, and background whenever possible.

Scar quality will be evaluated over time using the Patient and Observer Scar Assessment Scale (POSAS), the Vancouver Scar Scale, clinical scar measurements, standardized photographs, scar-related symptoms, participant satisfaction, wound complications, and local or systemic reactions related to the injection. The primary assessment time point is postoperative week 24. Changes over time and differences between treatment groups will be evaluated using appropriate repeated-measures statistical methods.

Studientyp

Interventionell

Einschreibung (Geschätzt)

80

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

  • Türkei (türkiye)
    • Kartal
      • Istanbul, Kartal, Türkei (türkiye), 34865
        • Kartal Dr Lutfi Kırdar City Hospital
        • Kontakt:
        • Hauptermittler:
          • Burak Kersin, md
        • Unterermittler:
          • Zeynep Erdoğan Çetin, md
        • Unterermittler:
          • Koray Islek, md

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Adults aged 40 to 60 years.
  • Scheduled to undergo open thyroidectomy, thyroid lobectomy, or parathyroidectomy through a standard anterior cervical (Kocher) incision.
  • Undergoing anterior neck surgery for the first time.
  • Able to provide written informed consent.
  • Willing to attend the planned postoperative follow-up visits.
  • Able and willing to comply with the study procedures.

Exclusion Criteria:

  • Younger than 40 years or older than 60 years.
  • Previous anterior neck surgery.
  • Pre-existing scar in the planned incision area.
  • History of hypertrophic scar or keloid formation.
  • Previous radiotherapy to the neck.
  • Active dermatologic disease involving the anterior neck.
  • Active local or systemic infection.
  • Uncontrolled diabetes mellitus.
  • Current use of systemic corticosteroids or immunosuppressive medications.
  • Pregnancy or breastfeeding.
  • Known hypersensitivity to fish, salmonid-derived products, polynucleotides, or any component of PLINEST One.
  • Coagulation disorder or clinically significant bleeding tendency.
  • Use of anticoagulant therapy that constitutes a contraindication to intradermal injection.
  • Any contraindication to mesotherapy, intradermal injection, or injectable biostimulant procedures.
  • Inability or unwillingness to comply with the planned follow-up assessments.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Verhütung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Verdreifachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: PN-HPT Group

Participants will receive a single intraoperative injection of PLINEST One PN-HPT along the surgical incision immediately after skin closure.

Intervention:

PLINEST One PN-HPT (CE 0373-Marked Class III Medical Device Containing Highly Purified Polynucleotides)
Gerät: Polynucleotide (PN-HPT)
PLINEST One is a CE 0373-marked Class III medical device containing PN-HPT (Polynucleotides Highly Purified Technology). The formulation contains polynucleotides and does not contain hyaluronic acid, mannitol, local anesthetics, corticosteroids, vitamins, peptides, or other added bioactive ingredients. A single dose will be administered immediately after skin closure and before the final surgical dressing. The solution will be injected intradermally or into the superficial subdermal plane along the entire surgical incision using a 34-gauge needle. The total volume will be calculated as 0.5 mL per centimeter of incision length and distributed evenly along the incision line.
Andere Namen:
  • PLINEST One
  • Polynucleotides Highly Purified Technology
Placebo-Komparator: Placebo Group

Participants will receive a single intraoperative injection of sterile 0.9% sodium chloride along the surgical incision immediately after skin closure.

Intervention:

Sterile 0.9% Sodium Chloride
Sonstiges: Sterile 0.9% Sodium Chloride
Sterile 0.9% sodium chloride solution will be administered as the placebo comparator. A single dose will be injected immediately after skin closure and before the final surgical dressing. The solution will be injected intradermally or into the superficial subdermal plane along the entire surgical incision using a 34-gauge needle and a 3 mL Luer-lock syringe. The total volume will be calculated as 0.5 mL per centimeter of incision length and distributed evenly along the incision line. The injection volume, anatomical plane, needle size, syringe type, and injection pattern will match those used in the PN-HPT group.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Patient and Observer Scar Assessment Scale (POSAS) Score at 24 Weeks
Zeitfenster: 24 weeks after surgery
Postoperative scar quality will be assessed using the Patient and Observer Scar Assessment Scale (POSAS v3). Total and subscale scores from the patient and observer assessments will be compared between the PN-HPT and placebo groups. Patient and Observer Scar Assessment Scale 3.0 (POSAS 3.0) with scores ranging from 6 to 60; higher scores indicate worse scar quality.
24 weeks after surgery

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Patient and Observer Scar Assessment Scale (POSAS) Scores at 4 and 12 Weeks
Zeitfenster: 4 and 12 weeks after surgery
Postoperative scar quality will be assessed using the Patient and Observer Scar Assessment Scale (POSAS v3). Total and subscale scores will be compared between the PN-HPT and placebo groups. Patient and Observer Scar Assessment Scale 3.0 (POSAS 3.0) - Observer Scale, with scores ranging from 6 to 60; higher scores indicate worse scar quality.
4 and 12 weeks after surgery
Vancouver Scar Scale Score
Zeitfenster: 4, 12, and 24 weeks after surgery
Scar quality will be assessed using the Vancouver Scar Scale, including its clinical scar characteristics. Scar quality will be assessed using the Vancouver Scar Scale (VSS), with total scores ranging from 0 to 13; higher scores indicate worse scar quality.
4, 12, and 24 weeks after surgery
Scar Width
Zeitfenster: postoperative day 1 and 4-12- 24 weeks after surgery
Scar length will be measured in millimeters at the time of surgery and at 4, 12, and 24 weeks postoperatively. The change in scar length from the time of surgery will be assessed at each follow-up visit.
postoperative day 1 and 4-12- 24 weeks after surgery

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Dr. Lutfi Kirdar Kartal Training and Research Hospital

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Nützliche Links

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

7. November 2026

Primärer Abschluss (Geschätzt)

1. November 2027

Studienabschluss (Geschätzt)

1. November 2027

Studienanmeldedaten

Zuerst eingereicht

24. August 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

27. August 2026

Zuerst gepostet (Tatsächlich)

28. August 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

28. August 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

27. August 2026

Zuletzt verifiziert

1. August 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • KDLK-KBB-PNHPT-2026-01

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

Individual participant data will not be shared because of privacy and confidentiality considerations and institutional policies regarding the protection of participant data.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Produkt, das in den USA hergestellt und aus den USA exportiert wird

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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