The goal of this randomised controlled trial is to evaluate the effect of carvedilol (a non-selective beta-blocker) in patients with compensated advanced chronic liver disease under clinically significant portal hypertension or the grey zone of Baveno VII criteria. The main question it aims to answer is: Does carvedilol reduce hepatic decompensation and mortality in these patients despite the absence of varices needing treatment. Researchers will compare carvedilol to no carvedilol to see if carvedilol can prevent hepatic decompensation and mortality. Participants will either take carvedilol or not taking carvedilol for 5 years with regular clinic visit for checkups and investigations, including blood tests, ultrasonography of the liver, upper gastrointestinal endoscopy, transient elastography.
The study is a multi-centre, open-label, randomised controlled trial conducted in Prince of Wales Hospital, a tertiary academic hospital in Hong Kong, as well as other international study sites. Eligible patients will be randomised to NSBB arm (i.e. receiving carvedilol) or conventional arm (i.e. not receiving carvedilol), aiming to test the hypothesis that Baveno VII criteria-guided carvedilol treatment in compensated advanced chronic liver disease (cACLD) patients in grey zone or with clinically significant portal hypertension (CSPH) is superior to not treating them in the absence of high-risk varices (HRV), in terms of prevention of first occurrence of hepatic decompensation and mortality. Consecutive patients in the participating study sites with cACLD fulfilling the high-risk grey zone and CSPH criteria by LSM and platelet count will be invited to this study. The patients will undergo oesophagogastroduodenoscopy (OGD) for screening of oesophageal varices (OV). Those without HRV will be randomised into NSBB and conventional arms. Patients in the NSBB arm will be started on carvedilol. Those in the conventional arm will not receive NSBB as per current standard of practice. The expected accrual duration is 24 months with an interim analysis to be performed when all enrolled patients have reached 1 year of follow-up or the primary endpoint. The total follow-up duration is 5 years.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
474
Patients in the NSBB arm will receive generic carvedilol. The starting dose of oral carvedilol is 6.25mg daily (to be taken once or twice per day) and can be adjusted at each scheduled visit (either by increasing the dosage or frequency of dose administration) according to patients' tolerance, as well as the blood pressure and pulse rate that the systolic blood pressure should be not lower than 90 mmHg and pulse rate not lower than 55 beats per minute. The dosage of carvedilol can also be titrated or discontinued at unscheduled visit according to patient's condition. In case carvedilol is discontinued, it can be resumed from the starting dose at next scheduled visit if there is no contraindication for carvedilol. The dose of carvedilol will be kept at 6.25-12.5mg per day unless there are additional non-hepatic indications such as arterial hypertension or cardiac disease warranting higher carvedilol dosage. The maximum allowed dose of carvedilol is 50mg daily as per drug instruction.
Prince of Wales Hospital, The Chinese University of Hong Kong
Hong Kong, Hong Kong
RECRUITINGcomposite of incident high-risk varices (HRV), hepatic decompensation or death
HRV is defined by moderate to large oesophageal varices (OV) or OV with red wale sign. Hepatic decompensation is defined by the presence of ascites, variceal bleeding or overt hepatic encephalopathy
Time frame: 5 years
Number of participants with development of each hepatic decompensation event
Hepatic decompensation events include ascites, variceal bleeding and overt hepatic encephalopathy
Time frame: 5 years
Number of participants with development of hepatocellular carcinoma
Development of hepatocellular carcinoma
Time frame: 5 years
Change in hepatic function in terms of Child-Pugh score
Higher Child-Pugh score indicates poorer liver condition, vice versa
Time frame: 5 years
Change in hepatic function in terms of model for end-stage liver disease (MELD) score
Higher MELD score indicates poorer liver condition, vice versa
Time frame: 5 years
Change in liver stiffness measurement (LSM) and spleen stiffness measurement (SSM)
Change in liver and spleen stiffness measurements on transient elastography
Time frame: 5 years
Adverse events
Any adverse events during the study period
Time frame: 5 years
Number of participants who survive until the last clinic visit
Survival until end of study
Time frame: 5 years
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