Chronic hepatitis C infection is associated with changes of glucose metabolism end increased frequency of impaired glucose tolerance. This might be a additional risk factor for disease and fibrosis progression. The study aims to evaluate whether a therapy with direct-acting antiviral agents leading to a sustained virologic response directly impacts parameters reflecting glucose metabolism and fibrosis.

Chronic hepatitis C infection is associated with changes of glucose metabolism end increased frequency of impaired glucose tolerance. It is well known that metabolic factors play an important role in fibrosis progression and steatohepatitis for example in non-alcoholic steatohepatitis (NASH). Accordingly changes in glucose metabolism in patients with chronic hepatitis C might directly impact disease and fibrosis progression. The study aims to evaluate whether a therapy with direct-acting antiviral agents leading to a sustained virologic response directly impacts parameters reflecting glucose metabolism and fibrosis. Follow-up examinations will determine the long-term metabolic changes of successful elimination of the virus by antiviral treatment.

Inclusion Criteria:

1. Patients with chronic hepatitis C infection and planned antiviral therapy with direct-acting antiviral agents
2. Age 18-99
3. Informed Consent

Exclusion Criteria:

1. Patients without legal capacity for informed consent
2. alcohol intake ≥ 20 g/d (f) und 30 g/d (m) within one year of study screening
3. Decompensated cirrhosis
4. viral co-infection
5. HIV infection
6. Non-viral chronic liver disease
7. Malignancy within 5 years before study screening except basalioma
8. liver transplant recipients
9. weight loss ≥10% within 3 months before study screening
10. Changes of diabetic drug treatment, lipid lowering therapy oder vitamin E within three months before study screening.
11. Intake of medication associated with hepatic steatosis (e.g. steroids, methotrexate, amiodarone, tamoxifen, valproat, flutamide, tetracyclins, cytostatics etc.)
12. Bariatric surgery in personal history
13. Clinically relevant congestive heart disease, cardiac arrythmia, valvular heart disease)
14. Implanted cardiac pacemaker or defibrillator
15. Patients during pregnancy or lactation

Patients with chronic hepatitis C infection with planned antiviral DAA treatment