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Published in: Clinical Drug Investigation 2/2014

Open Access 01-02-2014 | Original Research Article

Pharmacokinetics, Pharmacodynamics, and Immunogenicity of Belatacept in Adult Kidney Transplant Recipients

Authors: Jinshan Shen, Robert Townsend, Xiaoli You, Yun Shen, Ping Zhan, Zexun Zhou, Dong Geng, Dianna Wu, Nadia McGirr, Kathleen Soucek, Elizabeth Proszynski, Janice Pursley, Eric Masson

Published in: Clinical Drug Investigation | Issue 2/2014

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Abstract

Background and Objectives

Belatacept is a first-in-class, selective co-stimulation blocker recently approved for the prophylaxis of organ rejection in adult kidney transplant recipients. The objective of this study was to report the pharmacokinetics, pharmacodynamics, and immunogenicity of belatacept.

Methods

The pharmacokinetics, pharmacodynamics (CD86 receptor occupancy), and immunogenicity of belatacept were studied in de novo adult kidney transplant recipients in phase II and III clinical studies.

Results

Following multiple doses of 5 or 10 mg/kg, the geometric mean (percentage coefficient of variation) maximum serum concentration and area under the serum concentration–time curve over one dosing interval of belatacept were 136 (20 %) and 238 (27 %) μg/mL, and 13,587 (27 %) and 21,241 (35 %) μg·h/mL, respectively. The median belatacept elimination half-life was 8–9 days. Belatacept exhibited concentration-dependent binding to CD86 receptors. The pre-dose CD86 receptor occupancy by belatacept decreased from 94 to 65 % between day 5 and 1 year post-transplant, with corresponding pre-dose trough serum concentrations of belatacept decreasing from ~35 to 4 μg/mL during this period. The cumulative incidence of developing anti-belatacept antibodies was 5.3 % up to 3 years post-transplant and had no impact on belatacept exposure.

Conclusions

Belatacept in adult kidney transplant demonstrated linear pharmacokinetics with low variability, concentration-dependent pharmacodynamics, and a low incidence of anti-drug antibodies.
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Metadata
Title
Pharmacokinetics, Pharmacodynamics, and Immunogenicity of Belatacept in Adult Kidney Transplant Recipients
Authors
Jinshan Shen
Robert Townsend
Xiaoli You
Yun Shen
Ping Zhan
Zexun Zhou
Dong Geng
Dianna Wu
Nadia McGirr
Kathleen Soucek
Elizabeth Proszynski
Janice Pursley
Eric Masson
Publication date
01-02-2014
Publisher
Springer International Publishing
Published in
Clinical Drug Investigation / Issue 2/2014
Print ISSN: 1173-2563
Electronic ISSN: 1179-1918
DOI
https://doi.org/10.1007/s40261-013-0153-2

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