- ICH GCP
- Register voor klinische proeven in de VS.
- Klinische proef NCT07571460
Clinical Application of Simcyp-Guided Warfarin Initiation Doses in Cirrhotic Patients With Portal Vein Thrombosis
Dose Prediction for Statins and Anticoagulant Medications in Cirrhotic Patients Using Simcyp Program: Applications in Clinical Practice
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
This was a prospective, open-label, pilot interventional clinical study conducted on adult cirrhotic patients with radiologically confirmed portal vein thrombosis. A total of twenty-one patients were enrolled from the outpatient clinics of the Hepatology, Gastroenterology, and Infectious Diseases Department at Kafrelsheikh University Hospital between March 2024 and March 2025.
Before initiation of anticoagulation therapy, all participants underwent comprehensive baseline clinical and laboratory assessments, including detailed medical history with emphasis on bleeding and thrombotic risk, physical examination, complete blood count, liver and renal function tests, and baseline coagulation profile. Eligible patients were classified according to Child-Pugh score into class A or B.
Patients with Child-Pugh class A (n = 10) received warfarin 3 mg once daily, while patients with Child-Pugh class B (n = 11) received warfarin 2 mg once daily. Initial dosing was guided by Simcyp® model predictions and the closest commercially available strengths. Enoxaparin was administered as bridging therapy at a therapeutic dose of 1 mg/kg twice daily until achievement of the target INR.
During the warfarin initiation phase, daily INR monitoring was performed, and dose adjustments were carried out using standardized clinical titration principles until a stable therapeutic INR (2.0-3.0) was achieved on two consecutive measurements. Patients were closely monitored throughout the follow-up period for treatment-related adverse events, with particular emphasis on bleeding complications. Bleeding events were systematically assessed and classified as minor or major, in addition to monitoring for any thromboembolic events.
Studietype
Inschrijving (Werkelijk)
Fase
- Fase 4
Contacten en locaties
Studie Locaties
-
-
-
Cairo, Egypte
- Kafrelsheikh University
-
-
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- Age ≥ 18 years
- Diagnosed liver cirrhosis (Child-Pugh A or B)
- Radiologically confirmed portal venous thrombosis
- No prior exposure to warfarin (for initial dose simulation)
- No pervious history of variceal bleeding
Exclusion Criteria:
- Child-Pugh C cirrhosis
- Platelets < 50,000/mm³
- Severe renal impairment (eGFR < 30 mL/min)
- Use of strong CYP2C9/CYP3A4 inhibitors or inducers
- Pregnancy or breastfeeding
- Active malignancy, especially hepatocellular carcinoma
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Niet-gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: Child-Pugh Class A (n = 10)
Adult cirrhotic patients with portal vein thrombosis received 3 mg warfarin oral once daily (Marevan® 3 mg, GSK, Egypt) Other Intervention (Bridging Therapy): Enoxaparin (1 mg/kg) subcutaneously twice daily until achievement of a stable therapeutic INR (2.0-3.0).
|
Warfarin is a vitamin K antagonist approved for the treatment of thromboembolic disorders and was used in this study for anticoagulation in cirrhotic patients with portal vein thrombosis.
|
|
Experimenteel: Child-Pugh Class B (n = 11)
Adult cirrhotic patients with portal vein thrombosis received 2 mg warfarin oral once daily (2 tablets of Marevan® 1 mg, GSK, Egypt). Other Intervention (Bridging Therapy): Enoxaparin (1 mg/kg) subcutaneously twice daily until achievement of a stable therapeutic INR (2.0-3.0). |
Warfarin is a vitamin K antagonist approved for the treatment of thromboembolic disorders and was used in this study for anticoagulation in cirrhotic patients with portal vein thrombosis.
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Time to Achieve Therapeutic INR
Tijdsspanne: From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
The number of days from initiation of warfarin therapy until an INR value within the therapeutic range (≥ 2.0) was documented.
|
From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Average Warfarin Dose During Initiation Phase
Tijdsspanne: From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
The mean daily warfarin dose required to achieve therapeutic anticoagulation during the initiation phase.
|
From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
|
Proportion of Patients Achieving Therapeutic INR Within 3-5 Days
Tijdsspanne: Within 3-5 days after warfarin initiation
|
The percentage of patients who achieved therapeutic INR (≥ 2.0) within 3 to 5 days after initiation of warfarin therapy.
|
Within 3-5 days after warfarin initiation
|
|
Follow-up Duration During Warfarin Initiation Phase
Tijdsspanne: From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
The duration of patient follow-up during the warfarin initiation phase, measured in days.
|
From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
|
Incidence of Over-Anticoagulation
Tijdsspanne: From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
The occurrence of excessive anticoagulation, defined as an international normalized ratio (INR) value greater than 4 during the initiation phase.
|
From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
|
Incidence of Bleeding Events
Tijdsspanne: From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
The occurrence of bleeding complications during the study follow-up period, classified as minor or major according to standard clinical criteria.
|
From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
|
Incidence of Thromboembolic Events
Tijdsspanne: From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
The occurrence of any new thromboembolic events during the follow-up period after initiation of warfarin therapy.
|
From initiation of warfarin therapy until achievement of therapeutic INR (up to 14 days)
|
Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Studie directeur: Noha Mahmoud El-khodary, PhD, Clinical Pharmacy Department, Faculty of Pharmacy, Kafrelsheikh University
- Hoofdonderzoeker: Naira Galal, BSc Pharm, Clinical Pharmacy Department, Faculty of Pharmacy, Kafrelsheikh University
Publicaties en nuttige links
Algemene publicaties
- Guerrero A, Campo LD, Piscaglia F, Scheiner B, Han G, Violi F, Ferreira CN, Tellez L, Reiberger T, Basili S, Zamora J, Albillos A; Baveno Cooperation: an EASL consortium. Anticoagulation improves survival in patients with cirrhosis and portal vein thrombosis: The IMPORTAL competing-risk meta-analysis. J Hepatol. 2023 Jul;79(1):69-78. doi: 10.1016/j.jhep.2023.02.023. Epub 2023 Feb 28.
- Davis JPE, Lim JK, Francis FF, Ahn J. AGA Clinical Practice Update on Management of Portal Vein Thrombosis in Patients With Cirrhosis: Expert Review. Gastroenterology. 2025 Feb;168(2):396-404.e1. doi: 10.1053/j.gastro.2024.10.038. Epub 2024 Dec 20.
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
- Pathologische processen
- Ziekten van het spijsverteringsstelsel
- Lever Ziekten
- Fibrose
- Pathologische aandoeningen, tekenen en symptomen
- Levercirrose
- Heterocyclische verbindingen, 1-ring
- Heterocyclische verbindingen
- Heterocyclische verbindingen, 2-ring
- Heterocyclische verbindingen, gefuseerd ring
- Pyrans
- Coumarins
- Benzopyrans
- 4-hydroxycoumarins
- Warfarine
Andere studie-ID-nummers
- KFSIRB200-127-B
- KFSIRB200-127 (Register-ID: Kafrelsheikh University IRB)
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .