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INHSU 2016: Effective Antiviral Treatment Reduces Fatigue in People with Hepatitis C

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Fatigue -- a common symptom among people living with hepatitis C virus (HCV) infection -- is associated with liver inflammation and fibrosis, but antiviral therapy that leads to a cure significantly reduces the likelihood of fatigue, according to a Danish study presented at the 5th International Symposium on Hepatitis Care in Substance Users (INHSU 2016) this week in Oslo.

Rasmus Thornhøj from Odense University Hospital in Southern Denmark presented findings from the FAT-HEP study, which looked at fatigue in relation to chronic HCV infection, current or past substance use, opioid substitution therapy (OST), liver inflammation and fibrosis, and sustained response to hepatitis C treatment.

Fatigue is frequently reported by people with chronic hepatitis C and has a detrimental effect on quality of life, though its pathophysiology is not yet fully understood.

"People can't do the things they normally would, and they may have trouble staying in a job," Thornhøj said.

Last year the European Association for the Study of the Liver (EASL) recommended that debilitating fatigue should be among the indications for prioritizing hepatitis C treatment.

This cross-sectional, questionnaire-based study, conducted from September through November 2015, used the Fatigue Severity Scale (FSS), the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) measure, and the Fatigue Visual Analog Scale (VAS-F).

The analysis included 56 people with chronic hepatitis C seen at an outpatient clinic in Denmark. Of these, 30% were current substance users, 54% had a history of previous substance use, and 36% were on OST.

Results

  • More than two-thirds of study participants (68%) reported clinically significant fatigue (FSS score >4).
  • Fatigue was more common among people with current substance use (odds ratio [OR] 2.9; p=0.14), past substance use (OR 1.7; p=0.35), and use of OST (OR 2.55; p=0.15), but none of these associations were statistically significant.
  • Fatigue was significantly associated with liver disease severity measures.
  • Participants with liver inflammation, indicated by an alanine aminotransferase level >30 IU/mL for men or 19 IU/mL for women, had more than a 5-fold higher likelihood of fatigue (OR 5.3; p=0.01).
  • Those with a FibroScan transient elastometry score >12 kPa, indicating a high probability of advanced fibrosis (stage F3) or cirrhosis (F4), had nearly a 6-fold higher likelihood of fatigue (OR 5.8; p=0.03).
  • People who achieved sustained virological response at 12 weeks after completion of hepatitis C treatment (SVR12) had a much lower likelihood of clinically meaningful fatigue (OR 0.2; p=0.02).

The researchers concluded that fatigue in people living with chronic hepatitis C cannot be solely explained by substance use or opioid substitution therapy, but it could be linked to HCV-related measures including liver inflammation, fibrosis, and sustained treatment response.

Thornhøj suggested that as treating this group of patients seems to reduce fatigue, this provides further support for prompt therapy.

9/8/16

Reference

R Thornhøj, A Riis, JF Hansen, et al. Fatigue in patients with chronic hepatitis C: the FAT-HEP study. A cross sectional study of fatigue and its relation to substance use and OST. 5th International Symposium on Hepatitis Care in Substance Users (INHSU 2016).  Oslo, September 7-9, 2016. See abstract.