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BR-ACの有無にかかわらず標準的なケアで治療された非治癒性静脈潰瘍

2026年11月2日 更新者：BioStem Technologies

BR-ACの有無にかかわらず標準的なケアで処理された非治癒性静脈傾斜潰瘍の前向き、多施設、無作為化、制御された試験

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.

調査の概要

状態

完了

条件

介入・治療

詳細な説明

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.

研究の種類

介入

入学 (実際)

71

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究場所

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

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

18年歳以上 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

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.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか？

デザインの詳細

  • 主な目的：処理
  • 割り当て：ランダム化
  • 介入モデル：並列代入
  • マスキング：独身

武器と介入

参加者グループ / アーム
介入・治療
実験的：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.
他の：BR-AC

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.
アクティブコンパレータ：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.
他の：Standard Care

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.

この研究は何を測定していますか？

主要な結果の測定

結果測定
メジャーの説明
時間枠
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.
時間枠：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

二次結果の測定

結果測定
メジャーの説明
時間枠
To compare differences between treatment groups in proportions of wounds with complete wound closure, based on time in days to closure
時間枠：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)
時間枠：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
時間枠：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
時間枠：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

その他の成果指標

結果測定
メジャーの説明
時間枠
Number of participants that acquire clinical signs and symptoms of infections post-randomization
時間枠：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
時間枠：over the 17-week study period

Spontaneously reported and elicited adverse events, coded in MedDRA
over the 17-week study period

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

BioStem Technologies

捜査官

  • スタディディレクター：Bert Slade, MD、Independent

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2025年2月14日

一次修了 (実際)

2026年8月14日

研究の完了 (実際)

2026年8月14日

試験登録日

最初に提出

2025年1月22日

QC基準を満たした最初の提出物

2025年2月5日

最初の投稿 (実際)

2025年2月6日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月4日

QC基準を満たした最後の更新が送信されました

2026年11月2日

最終確認日

2026年11月1日

詳しくは

本研究に関する用語

追加の関連 MeSH 用語

その他の研究ID番号

  • BR-AC-VLU-101

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

いいえ

米国FDA規制機器製品の研究

いいえ

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