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Surviving Hepatitis C-Understanding Death and Survival Beyond Cure
Paul J Clark1, Patricia C Valery2, Simone I Strasser3
1Department of Gastroenterology, Princess Alexandra and Mater Hospitals, and Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia.
Background And Aims:
Cure of hepatitis C virus (HCV) infection decreases liver- and all-cause mortality. However, the risk of early mortality after HCV cure remains. We examined factors associated with cause-specific mortality after direct-acting antiviral (DAA) therapy.
Methods:
DAA-treated adults (recruited 2016-2021) were followed up to September 2023. Medication, health-service use, and deaths were obtained from population databases. The primary outcome was all-cause and cause-specific mortality.
Results:
Among 3619 patients (average 52.0 years (SD = 10.5), 66.0% male, 33.6% with cirrhosis) followed for a median of 6.8 years (IQR 5.5-7.4), 423 (11.7%) died (40.6% due to liver disease, 13.2% self-harm/accidental poisoning and 12.3% respiratory disease/lung cancer). Cirrhosis (adjusted hazard ratio (adj-HR) = 14.51, 95% CI 6.87-30.64), FIB4 > 3.25 (adj-HR = 4.22, 95% CI 2.63-6.80), nonsustained virological response (SVR) (adj-HR = 3.94, 95% CI 2.64-5.88) and age ≥ 60 years (adj-HR = 1.88, 95% CI 1.32-2.69) increased liver-related mortality risk. Mortality was threefold higher in non-SVR (32.4% of 210 patients vs. 10.2% of 2894 with SVR, p < 0.001). Non-SVR increased risk of liver mortality (adj-HR = 4.30, 95% CI 2.90-6.37). Mental health medication use (adj-HR = 2.82, 95% CI 1.40-5.67), loss to clinical follow-up (adj-HR = 2.61, 95% CI 1.31-5.21) and injection drug use/opioid replacement therapy (adj-HR = 2.26, 95% CI 1.23-4.14) increased risk of self-harm/accidental poisoning-related mortality. Age ≥ 60 years and diabetes increased mortality risk from other extrahepatic cancer (adj-HR = 2.68, 95% CI 1.31-5.51 and adj-HR = 2.57, 95% CI 1.15-5.72) and cardiovascular disease (adj-HR = 2.71, 95% CI 1.06-4.19 and adj-HR = 2.28, 95% CI 1.03-5.05).
Conclusions:
Liver-related death drives mortality for cirrhotic patients. Curing HCV remains critical. Holistic HCV care, with attention to mental health illnesses in younger patients, metabolic comorbidities, and better cancer screening for older patients may reduce excess mortality.
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