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Nicht heilende venöse Beingeschwüre, die mit Standardpflege mit oder ohne BR-AC behandelt wurden

2. November 2026 aktualisiert von: BioStem Technologies

Eine prospektive, multizentrische, randomisierte, kontrollierte Studie mit nicht heilenden venösen Beingeschwüren, die mit Standardpflege mit oder ohne BR-AC behandelt wurden

This study examines a patient population with a non-healing, non-infected venous leg ulcer (VLU) having adequate arterial perfusion with confirmed venous reflux. It is hypothesized that weekly applications of the human placental allograft BioREtain® Amnion Chorion (BR-AC) applied to a non-healing VLU will result in a higher proportion of wounds showing complete healing within 12 weeks of initiating therapy, compared to standard care alone.

This study has a crossover period, where subjects on standard care alone who do not achieve complete healing within 12 weeks of initiating therapy will be allowed to crossover to receive BR-AC over 12 additional weeks, to evaluate if their wound can achieve complete healing.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This trial is a multicenter, randomized, controlled study designed to evaluate the safety and efficacy of BR-AC plus standard of care versus standard of care only in the treatment of venous leg ulcers. The eligibility criteria for this study will allow for enrollment of subjects with a VLU in the range of 2 cm^2 to 20 cm^2 in area. A lower size of 2 cm^2 was selected to exclude subjects who are likely to heal under compression therapy alone.

During the two-week run-in period, subjects who show a reduction in wound area predictive of achieving complete wound closure within 12 weeks under standardized care alone (i.e., compression therapy) will be excluded from the study. Eliminating these subjects will improve the estimated treatment effect. The criteria for duration, ≥ 4 weeks but ≤ 52 weeks, allows for the selection of those wounds that have demonstrated chronicity but may still have the potential to achieve wound closure.

The trial design will control potential variables that may affect the outcome between the treatment group and the control group by standardizing the requirements for evaluating venous insufficiency confirmed by duplex Doppler ultrasound examining valvular or venous incompetence, debridement, and compression therapy. Weekly subject visits will help monitor compliance in wound care and compression therapy, as well as to document when wound closureis achieved. The study will implement the use of an electronic imaging and measurement device (eKare inSight®) using a standardized protocol to ensure the measuring of the wound surface area is accurate, highly reproducible, and minimally variable.

There will also be a crossover treatment phase for those patients that were relegated to SOC only. After their 12-week standard of care treatment phase and for only those subjects that did not achieve complete wound closure, will be allowed to crossover for an additional 12 weeks of treatment with the BR-AC product following the protocol and procedures set forth within this document.

A follow-up phase will commence for all subjects that achieve complete wound closure, which is designed to measure longevity and durability of the closed wound. This follow-up period will consist of a four-week follow-up with two visits at each two-week interval.

Studientyp

Interventionell

Einschreibung (Tatsächlich)

71

Phase

  • Unzutreffend

Kontakte und Standorte

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

Studienorte

    • Alabama
      • Guntersville, Alabama, Vereinigte Staaten, 35976
        • Site 17
    • California
      • Castro Valley, California, Vereinigte Staaten, 94546
        • Site 2b
      • Glendale, California, Vereinigte Staaten, 91204
        • Site 19b
      • Oxnard, California, Vereinigte Staaten, 93030
        • Site 36
      • Oxnard, California, Vereinigte Staaten, 93036
        • Site 37
      • Palmdale, California, Vereinigte Staaten, 93551
        • Site 19
      • San Francisco, California, Vereinigte Staaten, 94115
        • Site 02
      • San Francisco, California, Vereinigte Staaten, 94117
        • Site 2a
      • Sylmar, California, Vereinigte Staaten, 91342
        • Site 04
      • Torrance, California, Vereinigte Staaten, 90502
        • Site 30
      • Vista, California, Vereinigte Staaten, 92081
        • Site 01
    • Florida
      • Aventura, Florida, Vereinigte Staaten, 33180
        • Site 34
      • Coral Gables, Florida, Vereinigte Staaten, 33134
        • Site 27
      • Deerfield Beach, Florida, Vereinigte Staaten, 33442
        • Site 20
      • Miami, Florida, Vereinigte Staaten, 33126
        • Site 35
      • Miami, Florida, Vereinigte Staaten, 33189
        • Site 31
    • Illinois
      • O'Fallon, Illinois, Vereinigte Staaten, 62269
        • Site 06
    • Massachusetts
      • Boston, Massachusetts, Vereinigte Staaten, 02118
        • Site 18
    • Missouri
      • St Louis, Missouri, Vereinigte Staaten, 63128
        • Site 32
    • New York
      • Lake Success, New York, Vereinigte Staaten, 11042
        • Site 16
    • Texas
      • Corpus Christi, Texas, Vereinigte Staaten, 78414
        • Site 38
      • Fort Worth, Texas, Vereinigte Staaten, 76104
        • Site 03

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

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  1. Patient has signed the informed consent form.

  2. Male or female patient at least 18 years of age or older, as of the date of the screening visit.

  3. Has a VLU between the knee and ankle (at or above the malleoli), with a surface area in the range of ≥ 2.0 cm2 and ≤ 20.0 cm2 when measured by the investigator staff at the screening visit using the eKare device post debridement.

    1. If the subject presents with > 1, but ≤ 3 VLU on the same leg, the largest ulcer will be selected as the target ulcer.
    2. If the target ulcer is < 1cm from another VLU, the ulcers should be traced as a single target ulcer provided at least one of the ulcers is at least 2.0 cm2 in area and the total surface area of the VLUs is ≤ 20.0 cm2.
  4. Target ulcer involves a full-thickness skin loss, but without exposure of tendon, muscle, or bone.

  5. Target ulcer duration ≥ 4 weeks but ≤ 52 weeks (12 months).

  6. Venous insufficiency confirmed by duplex Doppler ultrasound examining valvular or venous incompetence.

    a. Availability of a complete report of a previous examination performed 12 months of screening will be acceptable, and this examination would not be required to be repeated.

  7. Arterial supply adequacy confirmed by any one of the following:

    1. Great toe pressure ≥ 50 mm/Hg
    2. Systolic blood pressure Ankle Brachial Index (ABI) in the range ≥ 0.80 ≤ 1.10
    3. TcPO2 ≥ 40 mmHg from the foot
  8. Willing to follow all instructions given by the Investigator, return for all visits, and adhere to compression protocols while on the study.

Exclusion Criteria:

  1. A target ulcer of non-venous etiologies (e.g., sickle cell anemia, necrobiosis lipoidica diabeticorum, pyoderma gangrenosum, vasculopathic or vasculitic).
  2. Acute Deep Vein Thrombosis (DVT), defined as the first 10 days from onset of symptoms, or any DVT for which compression is considered by the Investigator to be contraindicated.
  3. Clinical evidence of ulcer bed infection, or infected hardware.
  4. Documented history of osteomyelitis at the target ulcer location within six (6) months preceding the screening visit.
  5. Refusal or inability to tolerate compression therapy.
  6. Pregnant women.
  7. Women of child-bearing potential who are unwilling to avoid pregnancy or use an effective form of birth control.
  8. Hemoglobin A1c (HbA1c) level is > 12% (108 mmol/mol).
  9. Current therapy with systemic antibiotics.
  10. Current therapy with cytotoxic agents.
  11. Current therapy with chronic (> 10 days) oral corticosteroids.
  12. Current therapy with TNFα inhibitors other than Trental® (pentoxifylline).
  13. Has tested positive for Human Immunodeficiency Virus (HIV) or has Acquired Immune Deficiency Syndrome (AIDS).
  14. Has malignancy or history of cancer in the preceding 5 years other than non-melanoma skin cancer.
  15. Currently on dialysis or planning to start dialysis.
  16. Is currently enrolled or participated in another device, drug, or biological trial within 30 days of screening.
  17. Therapy of the target ulcer with other birth tissue products, autologous skin graft, Apligraf®, or Dermagraft® within 30 days preceding the screening visit.
  18. Therapy of the target ulcer with topical growth factors within thirty (30) days preceding the screening visit.
  19. Any previous use of Vendaje®, Vendaje AC®, AmnioWrap2® applied to the target ulcer.

Studienplan

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

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Single

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: BR-AC plus Standard Care

All subjects in the treatment group will receive sponsor-approved standard of care. Standard of care is defined as:

  • Sharp debridement,
  • Wound cleansing with a neutral, non-irritating and non-toxic solution,
  • Non-adherent wound contact layer followed by an alginate or foam pad to maintain a moist, warm wound bed, and
  • The UrgoK2™ dual compression system providing around 40 mmHg.

Using an appropriate size to cover the entire wound area, BR-AC should be applied directly to the wound surface following sharp debridement. It is recommended that the product be trimmed to fit the area of the wound with sterile scissors before application.

BR-AC is an amnion layer, intermediate layer, and chorion layer placental membrane processed together with no separation of the layers. BR-AC is manufactured by BioStem Technologies, Inc. and is processed by the bioREtain method, which, briefly includes initial disinfection, processing with isotonic solutions, dehydration at 37-40°C, and electron beam sterilization.

Aktiver Komparator: Standard Care

All subjects in the control group will receive sponsor-approved standard of care. Standard of care is defined as:

  • Sharp debridement,
  • Wound cleansing with a neutral, non-irritating and non-toxic solution,
  • Non-adherent wound contact layer followed by an alginate or foam pad to maintain a moist, warm wound bed, and
  • The UrgoK2™ dual compression system providing around 40 mmHg.

Standard Care is defined as:

  • Sharp debridement,
  • Wound cleansing with a neutral, non-irritating and non-toxic solution,
  • Non-adherent wound contact layer followed by an alginate or foam pad to maintain a moist, warm wound bed, and
  • The UrgoK2™ dual compression system providing around 40 mmHg.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
To determine whether non-ischemic, non-infected VLUs treated with standard care plus BR-AC results in a higher probability of achieving complete wound closure compared to standard care alone.
Zeitfenster: over the 12-week treatment period

Percentage of subjects with complete wound closure over the 12-week treatment period, defined as 100% reepithelialization

over the 12-week treatment period

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
To compare differences between treatment groups in proportions of wounds with complete wound closure, based on time in days to closure
Zeitfenster: at 12 weeks

Percent change from baseline in wound surface area (cm2) at 12-weeks post-randomization

at 12 weeks
To compare differences between treatment groups in percent change in wound area (cm2)
Zeitfenster: at 12 weeks

Percent change from baseline in wound surface area (cm2) at 12-weeks post-randomization

at 12 weeks
To determine the total number of applications of BR-AC needed to achieve complete wound closure
Zeitfenster: at 12 weeks

Percent change from baseline in wound volume (cm3) at 12-weeks post-randomization

at 12 weeks
To determine whether subjects that crossover and receive standard care plus BR-AC results in a higher probability of achieving complete wound closure over the 12 additional weeks versus standard care alone
Zeitfenster: over an additional 12 weeks

Time in days from Visit 18 to initial observation of wound closure (defined as 100% reepithelialization of the wound without drainage) over an additional 12 weeks (Visits 19-30), where healing has been confirmed at two visits two weeks apart

over an additional 12 weeks

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Number of participants that acquire clinical signs and symptoms of infections post-randomization
Zeitfenster: over 12-weeks post-randomization

Differences in clinical signs and symptoms of infection from Visit 2 through end of study between the treatment groups

over 12-weeks post-randomization
Proportion of subjects experiencing adverse events, by treatment group
Zeitfenster: over the 17-week study period

Spontaneously reported and elicited adverse events, coded in MedDRA

over the 17-week study period

Mitarbeiter und Ermittler

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

Sponsor

Ermittler

  • Studienleiter: Bert Slade, MD, Independent

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 (Tatsächlich)

14. Februar 2025

Primärer Abschluss (Tatsächlich)

14. August 2026

Studienabschluss (Tatsächlich)

14. August 2026

Studienanmeldedaten

Zuerst eingereicht

22. Januar 2025

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

5. Februar 2025

Zuerst gepostet (Tatsächlich)

6. Februar 2025

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

4. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

2. November 2026

Zuletzt verifiziert

1. November 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • BR-AC-VLU-101

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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