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OpenTrials
Completed

NCT Number: NCT05385952

GATT-Patch Versus TachoSil in Liver Surgery

This is a pre-market, prospective, randomized (2:1), multicenter, multi-national pivotal clinical investigation. The purpose of this investigation is to determine the clinical safety and performance of GATT-Patch as compared with TachoSil for the management of minimal, mild, or moderate bleeding during elective open liver surgery.

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Key information

Age range

22 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Heidelberg University Hospital, Heidelberg, Germany

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subject is scheduled to undergo elective open surgery on the liver;
  • Subject is willing and able to give written informed consent for the clinical investigation participation;
  • Subjects is 22 years of age or older at the time of enrollment; and
  • Subject has been informed of the nature of the clinical investigation.

A subject must meet all of the following intra-operative inclusion criteria to be enrolled into the clinical investigation:

  • Subject in whom the Investigator is able to identify a target bleeding site at the liver resection plane for which any applicable conventional means for hemostasis (e.g. suture, ligature or cautery) are ineffective or impractical, and the choice is made to use a hemostatic agent to stop the bleeding; and
  • Subject has a target bleeding site with a SBSS of 1, 2, or 3 (e.g. reflecting minimal, mild or moderate bleeding severities).

Exclusion criteria

  • The target bleeding site is from a large defect in an artery or vein that requires vascular reconstruction with maintenance of vessel patency;
  • Subject is scheduled to undergo surgery on other organs than the liver and its associated biliary and vascular system; • Subject is scheduled to undergo a staged liver surgery procedure (e.g., Associating Liver Partition and Portal vein ligation for Staged hepatectomy [ALPPS])
  • Subject is taking multiple antithrombotic therapies in therapeutic dosage up to the time of surgery, but allowing exclusive use of acetylsalicylic acid;
  • Subject has platelet count <100 x 109/L, an activated partial thrombin time of >100s, or international normalized ratio >2.5;
  • Subject has a total bilirubin level of ≥2.5 mg/dl;
  • Subject is pregnant, planning on becoming pregnant or actively breastfeeding during the 3-month follow-up period;
  • Subject has a known hypersensitivity to brilliant blue (FD&C Blue #1), porcine gelatin, or horse proteins;
  • Subject who has religious objections to receiving products with components of animal (porcine or equine) or human origin;
  • Subject has an active or suspected infection at the bleeding site;
  • Subject in whom the investigational device will be used at the site of a synthetic graft or patch implant;
  • Subject has a life expectancy of less than 3 months;
  • Subject has a documented severe congenital or acquired immunodeficiency;
  • Subject has had or has planned to receive any organ transplantation;
  • Subject undergoes surgery with the indication of being a living liver donor;
  • Subject is currently participating or has participated in another clinical investigation within the past 30 days that may affect the endpoints of the study, such as trials related to the surgical procedure, and on anti-coagulation;
  • Subject is not appropriate for inclusion in the clinical investigation, per the medical opinion of the Investigator; and
  • Subject has any incidental (pre- and peri-operative) findings deemed by the Investigator to potentially jeopardize the safety or welfare of the subject.

Treatment and study plan

GATT-Patch (currently named ETHIZIA)

Device

GATT-Patch (currently named ETHIZIA) is a sterile, flexible and resorbable hemostatic sealing patch. It presents as a blue, soft, flexible, porcine gelatin fiber-based carrier impregnated with an NHS-POx / NU-POx granulate. GATT-Patch measures 10 cm long by 5 cm wide. GATT-Patch is active and can be applied on both sides. Blue color is an aid to visualize GATT-Patch when applied onto a bleeding location.

GATT-Patch is indicated for use as an adjunct to hemostasis in surgery for minimal, mild or moderate bleeding sites when control of bleeding by standard surgical techniques (such as suture, ligature or cautery) is ineffective or impractical. GATT-Patch is intended to be used for management of hemorrhage during surgeries on the liver.

Tachosil

Drug

TachoSil is a topical fibrin sealant patch consisting of human fibrinogen and human thrombin coated onto an equine collagen sponge.

TachoSil is a fibrin sealant patch indicated for use with manual compression in adult and pediatric patients as an adjunct to hemostasis in cardiovascular and hepatic surgery, when control of bleeding by standard surgical techniques (such as suture, ligature or cautery) is ineffective or impractical.

Primary outcomes

  1. Rate of Hemostasis at 3 Minutes Without Rebleeding at the 10-minute Time Point

    Time frame: During surgical procedure, assessed up to 10 minutes after device application

    Surface Bleeding Severity Scale 0

Secondary outcomes

  1. Mean Time to Hemostasis (Seconds)

    Time frame: During surgical procedure, assessed up to 10 minutes or up to the time that hemostasis is achieved, whichever occurred last

    Surface Bleeding Severity Scale 0

  2. Kaplan-Meier Estimated Distribution of Time to Hemostasis

    Time frame: During surgical procedure, up to the time that hemostasis is achieved

    Surface Bleeding Severity Scale 0

  3. Rate of Subjects With Treatment Failure

    Time frame: During surgical procedure

    SBSS 1-5 at the 10 minute timepoint

  4. Rate of Subjects With Rebleeding After 10 Minutes But Before Subject Closure

    Time frame: During surgical procedure up to patient closure

    Surface Bleeding Severity Scale 1-5 after initially Surface Bleeding Severity Scale 0

  5. Rate of Subjects With Hemostasis at 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 360, 420, 540 and 600 Seconds

    Time frame: During surgical procedure up to 10 minutes after device application

    Surface Bleeding Severity Scale 0-5

Other outcomes

  1. Procedure Duration

    Time frame: During surgical procedure

    Time in minutes

  2. Estimated Blood Loss

    Time frame: During surgical procedure

    mL

  3. Number of Participants With Each Type of Blood Transfusions: Platelets, Erythrocytes, Plasma

    Time frame: During surgical procedure

    Platelets, Erythrocytes, Plasma

  4. Number and Type of Blood Transfusions

    Time frame: During hospitalization up to hospital discharge after the surgical procedure, estimated up to 30 days

    Platelets, Erythrocytes, Plasma

  5. Mean Duration of ICU Stay

    Time frame: From surgery to discharge from the ICU, estimated up to 30 days

    Time in hours

  6. Mean Total Hospitalization Time

    Time frame: During hospitalization up to hospital discharge after the surgical procedure, estimated up to 30 days

    Time in days

  7. Aspect of Postoperative Drainage

    Time frame: During hospitalization up to hospital discharge after the surgical procedure, estimated up to 30 days

    Serous, sanguineous, serosanguineous, other Sanguineous Serosanguinous Serous, Sanguineous, Serosanguineous, Purulent, Other

  8. Rate of Subjects Requiring Reoperation

    Time frame: During postoperative 3-months follow-up

    Occurrence yes/no

  9. Rate of Subjects With Liver Resection Surface Complications on Ultrasound

    Time frame: At 6 weeks follow-up visit

    Patch encapsulation, patch rolling up on the surface, pseudoaneurysm, fluid collection

  10. Amount of Hemostatic Material Needed Versus Bleeding Surface

    Time frame: During surgical procedure

    cm2 patch per cm2 bleeding

  11. System Usability Score (SUS) User Satisfaction Questionnaire

    Time frame: At completion of the surgical procedure, at day 0

    Likert scale (strongly disagree, disagree, neutral, agree, strongly agree) with (strongly) agreeing meaning a better outcome for uneven questions and (strongly) disagreeing meaning a better outcome for even questions

  12. GATT-Patch Device-specific User Satisfaction Questionnaire

    Time frame: At completion of the surgical procedure, at day 0

    Likert scale (strongly disagree, disagree, neutral, agree, strongly agree) with (strongly) agreeing meaning a better outcome

  13. Local Recurrence of Liver Cancer at the Resection

    Time frame: 5 years

    Occurrence yes/no

  14. Cancer-free Survival

    Time frame: 5 years

    Occurrence yes/no

  15. Overall Survival

    Time frame: 5 years

    Occurrence yes/no

Sponsors and collaborators

Lead sponsor

GATT Technologies BV

Industry

Collaborators

  • Syneos Health

Registry information

Official study title

A Prospective, Multicenter, Randomized Clinical Investigation Evaluating the Safety and Efficacy of GATT-Patch Versus TachoSil for Hemostasis During Open Liver Surgery

Important dates

Study start
2022
Primary completion
2024
Study completion
2024
First posted
May 23, 2022
Registry last updated
Mar 4, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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