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Plasma Exchange Half-dose and Extracorporeal Detoxification for ACLF (Phoenix)

11 maja 2026 zaktualizowane przez: Tiago Bessa Gradim Loza, Unidade Local de Saude do Nordeste

Clinical trial

The goal of this clinical trial is to learn if a liver support protocol works to treat Liver failure in adults. The main questions it aims to answer are:

  • Does hemoadsorption plus half-dose plasma exchange provide support to liver failure patients until recovery or transplant
  • What medical problems do participants have during the technique? Researchers will compare DPMAS plus half-dose plasma exchange with conventional treatment to evaluate a gain in recovery

Participants will:

  • Be submitted to DPMAS plus half dose plasma exchange daily according to protocol.
  • Monitoring will be continuous in the ICU

Przegląd badań

Szczegółowy opis

Acute-on-chronic liver failure (ACLF) is a complex and life-threatening syndrome that develops when chronic liver disease suddenly decompensates. It is marked by systemic inflammation, the accumulation of albumin-bound toxins, and the rapid onset of multiorgan failure. The main drivers of this process include elevated levels of bilirubin and bile acids, an intense cytokine storm, and a profound loss of the liver's synthetic capacity.

Clinicians classify ACLF into three grades of increasing severity, with 28-day mortality ranging from 20-30% in grade 1, 40-60% in grade 2, and exceeding 70% in grade 3. Despite important advances in understanding its pathophysiology, effective therapeutic options remain limited, particularly for patients who are not candidates for liver transplantation. At present, no widely accepted extracorporeal liver support therapy has proven consistently successful. The central goal of care is therefore to stabilize the patient, control the inflammatory response and toxin burden, and create the conditions for hepatic regeneration or to serve as a bridge to transplantation.

Over the past decades, extracorporeal blood purification techniques have been explored as adjunctive therapies. High-volume plasma exchange has shown potential to reduce inflammatory mediators and improve survival in selected patients with acute liver failure or ACLF. However, its routine use is constrained by high plasma consumption, significant transfusion-related risks, and logistical challenges.

The Double Plasma Molecular Adsorption System (DPMAS), which employs the BS330 adsorber for bilirubin and bile acids and the HA330-2 adsorber for cytokines and inflammatory mediators, offers a more targeted approach. When combined with half-dose plasma exchange and appropriate replacement of plasma components, this hybrid detoxification strategy achieves effective toxin removal and immune modulation while substantially reducing the volume of plasma required. In our intensive care unit, this hybrid protocol has been developed and refined through clinical experience and informed by earlier studies. Several critically ill patients with ACLF who would otherwise have died or required urgent transplantation showed encouraging signs of recovery. Nevertheless, robust evidence from a randomized controlled trial is still needed to confirm the efficacy and safety of this combined approach in patients with ACLF of reversible aetiology.

Typ studiów

Interwencyjne

Zapisy (Szacowany)

240

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Lokalizacje studiów

    • Braganza District
      • Bragança, Braganza District, Portugalia, 5301-852
        • Unidade Hospitalar de Bragança
        • Kontakt:
        • Pod-śledczy:
          • Carla Gomes
        • Pod-śledczy:
          • Antonio Grilo Novais
        • Pod-śledczy:
          • Carla Pires
        • Pod-śledczy:
          • Raquel Leitão
        • Pod-śledczy:
          • Tiago Ceriz

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły
  • Starszy dorosły

Akceptuje zdrowych ochotników

Nie

Opis

Inclusion Criteria:

  • Written informed consent for participation in the study
  • Admission to the ICU with a diagnosis of ACLF of reversible etiology (infection, bleeding, alcohol-related, toxic, etc.)
  • Total bilirubin ≥ 12 mg/dL and INR ≥ 1.5
  • On the waiting list for liver transplantation or not a candidate for transplantation but with an indication for supportive therapy

Exclusion Criteria:

  • Refusal to provide consent
  • Pregnancy
  • Expected survival < 24 hours due to disease severity (hemodynamic instability requiring norepinephrine > 0.20 mcg/kg/min and/or mechanical ventilation with PaO₂/FiO₂ < 150 and/or non-hepatic coma)
  • ACLF severity greater than CLIF-C ACLF grade 3
  • Advanced organ dysfunction: Pulmonary (GOLD stage 3 or 4) and/or Cardiac (NYHA functional class III or IV)
  • Advanced or metastatic oncological disease (life expectancy < 6 months)
  • Marked frailty syndrome or secondary sarcopenia
  • Participation in another clinical trial within the previous 3 months

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie podtrzymujące
  • Przydział: Randomizowane
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Brak interwencji: Conventional therapy
Conventional therapy to ACLF
Eksperymentalny: DPMAS plus Plasma exchange

Patients in this arm will be submitted to:

DPMAS: selective adsorption therapy; mainly removes bilirrubin and inflammatory mediators AND Half-dose plasma exchange: nonselective plasma removal and replacement by a donor

Use of extracorporal technique to support patients with acute on chronic liver failure

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Mortality or need for liver transplantation
Ramy czasowe: From enrollment to 28 days after
28-day mortality and/or need for liver transplantation
From enrollment to 28 days after

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Total bilirrubin level
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Units: mg/dL
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
INR
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
International Normalized Ratio
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
SOFA
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks.
Sequential Organ Failure Assessment Score. Scale: 0-24. Higher score means worst outcome.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks.
CLIF-C ACLF score
Ramy czasowe: Measur at day of randomization, 72h after and 7 days after
Chronic Liver Failure Consortium Acute-on-Chronic Liver Failure score. Range 0-100
Measur at day of randomization, 72h after and 7 days after
Mortality or liver transplant at day 90
Ramy czasowe: 90 days after randomization
Mortality or liver transplant at day 90 after randomization
90 days after randomization
Encephalopathy
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Grade of encephalopathy according West Haven score. Grade 0-4. Higher score means worst outcome.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Vasopressor free days
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Number of days without need of vasopressor support
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Invasive mechanical ventilation free days
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Number of days without need of invasive mechanical ventilation
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
CRRT free days
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Number of days without need of Continuous Renal Replacement Therapy
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - bleeding events
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Bleeding events will be recorded and classified as major bleeding, clinically relevant non-major bleeding or minor bleeding according to standard critical care definitions. Assessment will include overt hemorrhage, intracranial bleeding, gastrointestinal bleeding, procedure-related bleeding, transfusion requirements and decreases in hemoglobin levels.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Coagulation Abnormalities
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Serial coagulation monitoring will include INR, fibrinogen concentration, platelet count and activated clotting parameters when applicable. Development or worsening of coagulopathy during DPMAS or plasma exchange sessions will be documented.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Hemodynamic Instability
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Episodes of hypotension during or after extracorporeal therapy sessions will be recorded, including increases in vasopressor requirements, reduction in mean arterial pressure, arrhythmias or interruption of treatment due to cardiovascular instability.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Circuit-Related Complications
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Extracorporeal circuit complications will include filter clotting, premature circuit failure, interruption of therapy, vascular access dysfunction, catheter thrombosis and technical complications related to DPMAS or plasma exchange delivery
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Metabolic and Electrolyte Disturbance
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Metabolic complications including acid-base disturbances, electrolyte abnormalities and clinically significant metabolic derangements occurring during therapy will be recorded
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Hematologic Complications
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Development of thrombocytopenia, hemolysis or significant transfusion requirements associated with extracorporeal therapy will be assessed throughout treatment and follow-up.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Infectious Complications
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
New infections, catheter-related bloodstream infections, bacteremia and sepsis episodes occurring during treatment or ICU stay will be documented.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Renal Complications
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Renal outcomes will include development or worsening of acute kidney injury, need for renal replacement therapy and renal replacement therapy-free days.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Safety issues - Neurological Complications
Ramy czasowe: Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks
Neurological adverse events including worsening hepatic encephalopathy, seizures, cerebral edema or unexplained neurological deterioration will be monitored and documented.
Daily from date of randomization until ICU discharge or liver trasnplant up to 12 weeks

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Publikacje i pomocne linki

Osoba odpowiedzialna za wprowadzenie informacji o badaniu dobrowolnie udostępnia te publikacje. Mogą one dotyczyć wszystkiego, co jest związane z badaniem.

Publikacje ogólne

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

1 lipca 2026

Zakończenie podstawowe (Szacowany)

1 grudnia 2027

Ukończenie studiów (Szacowany)

1 stycznia 2028

Daty rejestracji na studia

Pierwszy przesłany

30 kwietnia 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

11 maja 2026

Pierwszy wysłany (Rzeczywisty)

18 maja 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

18 maja 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

11 maja 2026

Ostatnia weryfikacja

1 kwietnia 2026

Więcej informacji

Terminy związane z tym badaniem

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

TAK

Opis planu IPD

Data available upon reasonable request always with anonymity

Ramy czasowe udostępniania IPD

End date

Kryteria dostępu do udostępniania IPD

For investigational use

Typ informacji pomocniczych dotyczących udostępniania IPD

  • PROTOKÓŁ BADANIA
  • SOK ROŚLINNY
  • ICF
  • CSR

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

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