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Personalized subcutaneous administration of hepatitis B surface antibodies without nucleos(t)ide analogs for patients at risk of renal failure after liver transplantation: a prospective single center cohort study.
Transplant International 2018 May
Currently, nucleos(t)ide analogs (NAs) in monotherapy are favored as prophylaxis against hepatitis B recurrence after liver transplantation. However, in patients at risk of renal failure, renal safety of NAs is of concern. We investigated the safety and efficacy of subcutaneous (SC) hepatitis B immunoglobulins (HBIG) in monotherapy. This is a single-arm prospective trial in patients transplanted >1 year. We included 43 Caucasian patients. The majority was treated with calcineurin inhibitors, and several patients had other risk factors for renal impairment as well: diabetes mellitus (n = 10/43), arterial hypertension (n = 11/43), and hyperlipidemia (=10/43). At inclusion, 42% (n = 18) had chronic kidney disease ≥ grade 3a. All patients were switched from IV HBIG with or without NAs to SC HBIG without NAs. After one year, the targeted titer was lowered to ≥150 IU/l in patients with low risk of recurrence. Mean follow-up time was 36 ± 5 months. None of the patients had a relapse of HBsAg or HBV DNA. The treatment was well tolerated, safe and the renal function remained unchanged both in patients with (n = 18) or without (n = 25) renal impairment at baseline. The mean HBsAb titer could be decreased from 343 ± 163 to 199 ± 81 IU/l in the low-risk group (n = 17) and 218 ± 71 IU/l in the high-risk group (n = 26). In 86% (n = 37) doses, reductions were possible, which significantly lowered the cost of treatment. SC HBIG without NAs had a 100% success rate in the long-term prevention of HBsAg and HBV DNA reappearance, without deterioration of renal function.
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