Non-healing Venous Leg Ulcers Treated With Standard Care With or Without BR-AC

Last updated: June 16, 2025
Sponsor: BioStem Technologies
Overall Status: Active - Recruiting

Phase

N/A

Condition

Claudication

Deep Vein Thrombosis

Venous Thrombosis

Treatment

BR-AC

Standard Care

Clinical Study ID

NCT06811909
BR-AC-VLU-101
  • Ages > 18
  • All Genders

Study Summary

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.

Eligibility Criteria

Inclusion

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 thescreening visit.

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

  4. If the subject presents with > 1, but ≤ 3 VLU on the same leg, the largestulcer will be selected as the target ulcer.

  5. If the target ulcer is < 1cm from another VLU, the ulcers should be traced as asingle target ulcer provided at least one of the ulcers is at least 2.0 cm2 inarea and the total surface area of the VLUs is ≤ 20.0 cm2.

  6. Target ulcer involves a full-thickness skin loss, but without exposure of tendon,muscle, or bone.

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

  8. Venous insufficiency confirmed by duplex Doppler ultrasound examining valvular orvenous incompetence. a. Availability of a complete report of a previous examination performed 12 monthsof screening will be acceptable, and this examination would not be required to berepeated.

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

  10. Great toe pressure ≥ 50 mm/Hg

  11. Systolic blood pressure Ankle Brachial Index (ABI) in the range ≥ 0.80 ≤ 1.10

  12. TcPO2 ≥ 40 mmHg from the foot

  13. Willing to follow all instructions given by the Investigator, return for all visits,and adhere to compression protocols while on the study.

Exclusion

Exclusion Criteria:

  1. A target ulcer of non-venous etiologies (e.g., sickle cell anemia, necrobiosislipoidica diabeticorum, pyoderma gangrenosum, vasculopathic or vasculitic).

  2. Acute Deep Vein Thrombosis (DVT), defined as the first 10 days from onset ofsymptoms, or any DVT for which compression is considered by the Investigator to becontraindicated.

  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 aneffective 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 ImmuneDeficiency Syndrome (AIDS).

  14. Has malignancy or history of cancer in the preceding 5 years other than non-melanomaskin cancer.

  15. Currently on dialysis or planning to start dialysis.

  16. Is currently enrolled or participated in another device, drug, or biological trialwithin 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) dayspreceding the screening visit.

  19. Any previous use of Vendaje®, Vendaje AC®, AmnioWrap2® applied to the target ulcer.

Study Design

Total Participants: 60
Treatment Group(s): 2
Primary Treatment: BR-AC
Phase:
Study Start date:
February 14, 2025
Estimated Completion Date:
October 31, 2026

Study Description

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.

Connect with a study center

  • Site 17

    Guntersville, Alabama 35976
    United States

    Active - Recruiting

  • Site 2b

    Castro Valley, California 94546
    United States

    Active - Recruiting

  • Site 19b

    Glendale, California 91204
    United States

    Active - Recruiting

  • Site 19

    Palmdale, California 93551
    United States

    Active - Recruiting

  • Site 02

    San Francisco, California 94115
    United States

    Active - Recruiting

  • Site 2a

    San Francisco, California 94117
    United States

    Active - Recruiting

  • Site 04

    Sylmar, California 91342
    United States

    Site Not Available

  • Site 30

    Torrance, California 90502
    United States

    Site Not Available

  • Site 01

    Vista, California 92081
    United States

    Active - Recruiting

  • Site 34

    Aventura, Florida 33180
    United States

    Active - Recruiting

  • Site 27

    Coral Gables, Florida 33134
    United States

    Active - Recruiting

  • Site 20

    Deerfield Beach, Florida 33442
    United States

    Active - Recruiting

  • Site 33

    Fort Walton Beach, Florida 32547
    United States

    Site Not Available

  • Site 31

    Miami, Florida 33189
    United States

    Active - Recruiting

  • Site 35

    Miami, Florida 33126
    United States

    Site Not Available

  • Site 18

    Boston, Massachusetts 02118
    United States

    Site Not Available

  • Site 32

    Saint Louis, Missouri 63128
    United States

    Site Not Available

  • Site 16

    Lake Success, New York 11042
    United States

    Active - Recruiting

  • Site 15

    Chapel Hill, North Carolina 27599
    United States

    Site Not Available

  • Site 03

    Fort Worth, Texas 76104
    United States

    Active - Recruiting

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