Renal complications and development of hypertension in the European study of FK 506 and cyclosporin in primary liver transplant recipients

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Abstract
We examined the occurrence of renal complications and hypertension in 540 primary liver recipients entered into the European liver trial comparing primary FK 506 to a cyclosporin A based immunosuppression regimen (CBIR). No difference in serious renal impairment or mean creatinine levels was observed with similar rates of “kidney failure” (FK 506 9.4% vs. CBIR 7.3%) and dialysis requirements (FK 506 12% vs. CBIR 11%). “Abnormal kidney function”, a less serious parameter of renal impairment, was reported in 89 recipients (33 %) in the FK 506 group versus 58 (21%) in the CBIR group (P <0.01). Development of this complication was associated with elevated intravenous FK 506 dosing schedules, with the mean cumulative dose 43% higher than treated patients with unaffected kidney function. In a later cohort of patients where intravenous dosing was lower, no significant difference in renal complications was detectable. The 6‐month prevalence rate of systemic arterial hypertension was noted to be lower in the FK 506‐treated patients compared to the CBIR group [33 (17.2%) vs. 47 (25.7%)].