Inclusion Criteria:

1. Patients undergoing primary liver transplantation.
2. Patients older than 18 years.
3. Patients with a hepatorenal syndrome.
4. Female patients of childbearing potential willing to perform a highly effective contraception during the study and 12 weeks after conclusion of study participation.
5. eGFR < 50 ml/min at the time point of transplantation.
6. Serum creatinine levels > 1.5 mg/dL at the time-point of transplantation.

Exclusion Criteria:

1. Patients with pre-transplant renal replacement therapy > 14 days.
2. Patients with a reason for renal impairment other than a hepatorenal syndrome.
3. Patients with a known hypersensitivity to mTOR-inhibitors.
4. Patients with a known hypersensitivity to mycophenolate acid.
5. Patients with a known hypersensitivity to anti CD 25-monoclonal antibodies.
6. Patients with platelets < 50.000/nl prior to initiation of therapy with mTOR inhibition.
7. Patients with triglycerides > 350 mg/dl and cholesterol > 300 mg/dl refractory to optimal medical treatment prior to initiation of therapy with mTOR inhibition.
8. Severe systemic infections and wound-healing disturbances.
9. Multiple organ graft recipients.
10. Patients with signs of a hepatic artery stenosis directly prior to initiation of therapy with everolimus.
11. Pregnant women will not be included in the study.
12. Patients with a psychological, familial, sociologic or geographic condition potentially hampering compliance with the study protocol and follow-up schedule.
13. Patients under guardianship (e.g., individuals who are not able to freely give their informed consent).