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Two strengths of a novel ready-to-use liquid preparation of the recombinant human GH (rhGH) Omnitrope were developed to increase the convenience for the patients. Omnitrope 3.3 mg/ml solution or Omnitrope 6.7 mg/ml solution was compared to Omnitrope 5 mg/ml powder and Genotropin 5 mg/ml powder in terms of pharmacokinetics, pharmacodynamics, safety, and local tolerance after a single s.c. dose of 5 mg. Two randomized, double-blind, single-dose, three-way crossover studies were carried out in 36 young healthy volunteers each. Endogenous GH secretion was suppressed with a 25-h continuous i.v. infusion of octreotide (40 microg/h) starting 1 h before rhGH administration. Pharmacokinetic parameters were similar for the three treatments in both studies respectively. Bioequivalence criteria were met for area under the concentration-time curve (AUC) and C(max). Likewise, the pharmacodynamic parameters for IGF1, IGF-binding protein 3, and non-esterified fatty acid were similar for all preparations. No differences in adverse events were observed between groups. Omnitrope 3.3 mg/ml solution, 6.7 mg/ml solution, and 5 mg/ml powder, and Genotropin 5 mg/ml powder are bioequivalent, have similar pharmacokinetic and pharmacodynamic profiles, and are equally safe. Overall, the products can be considered to be therapeutically interchangeable.


Uwe Fuhr, Daniel Tuculanu, Alexander Berghout, Sigrid Balser, Arnd Schwebig, Paul Saenger. Bioequivalence between novel ready-to-use liquid formulations of the recombinant human GH Omnitrope and the original lyophilized formulations for reconstitution of Omnitrope and Genotropin. European journal of endocrinology / European Federation of Endocrine Societies. 2010 Jun;162(6):1051-8

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PMID: 20332125

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