The trial is conducted in patients who have received a liver transplant, were prescribed tacrolimus to prevent organ rejection and developed diabetes from 3 month post-transplantation onwards. The goal of the trial is to assess the percentage of patients in whom diabetes will resolve 6 month after conversion from tacrolimus to cyclosporine micro-emulsion as measured by a fasting blood glucose < 1,26 g/l without the need of hypoglycemic treatment.

Inclusion Criteria:

• - Patients who have received a first liver transplantation and who are 18 to 70 year old
• Patients who are treated with tacrolimus post-transplant for at least 3 months and for a maximum of 36 months
• Patients without any known diabetes before transplantation and in whom diabetes mellitus was diagnosed for the first time at least 3 months post-transplantation

Exclusion Criteria

• Re-transplantation or multi-organ transplantation,
• Diabetes before the transplantation,
• Type I diabetes mellitus.

Other protocol-defined inclusion / exclusion criteria may apply