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J Clin Pharmacol. 2010 Mar;50(3):276-84. doi: 10.1177/0091270009340782. Epub 2009 Nov 25.

Subcutaneous bioavailability of golimumab at 3 different injection sites in healthy subjects.

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Centocor Research and Development Inc, Malvern, PA 19355, USA.


This study characterized the pharmacokinetics (PK) of golimumab, an antitumor necrosis factor alpha human IgG1kappa monoclonal antibody, after a single intravenous (IV) or subcutaneous (SC) administration in healthy subjects and determined the absolute bioavailability of SC golimumab delivered at 3 different anatomical regions. Seventy-eight healthy adult males were randomly assigned to receive a single dose of golimumab 100 mg by IV (30-minute infusion, n = 23) or SC administration at different sites (upper arm, n = 18; abdomen, n = 18; thigh, n = 19). Serial blood samples were collected for PK characterization. Following IV administration, the mean maximum observed serum golimumab concentration (C(max)) and the mean area under the concentration versus time curves from time zero to infinity (AUC(0-infinity)) were 29.5 +/- 5.8 microg/mL and 195.9 +/- 48.9 microg x d/mL, respectively. After SC administration, the mean values of C(max) and AUC(0-infinity) were 6.3 +/- 2.8 microg/mL and 100.1 +/- 29.2 microg x d/mL, respectively. The median terminal half-life was similar for SC and IV administration (10.9 and 11.8 days, respectively). The overall mean bioavailability of SC golimumab was 51%, and absorption was similar for the 3 injection sites. Golimumab 100 mg was generally well tolerated in this study. Results support the flexibility in the choice of an injection site for SC administration of golimumab.

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