Pharmacokinetics and pharmacokinetic/pharmacodynamic associations of ofatumumab, a human monoclonal CD20 antibody, in patients with relapsed or refractory chronic lymphocytic leukaemia: a phase 1-2 study

Bertrand Coiffier, Nedjad Losic, Birgitte Biilmann Rønn, Stéphane Lepretre, Lars Møller Pedersen, Ole Gadeberg, Henrik Frederiksen, Marinus H. J. van Oers, James Wooldridge, Janusz Kloczko, Jerzy Holowiecki, Andrzej Hellmann, Jan Walewski, Tadeusz Robak, Jørgen Petersen

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33 Citations (Scopus)

Abstract

The purpose of this phase 1-2 study was to investigate the association between the pharmacokinetic properties of ofatumumab, a human monoclonal CD20 antibody, and outcomes in 33 patients with relapsed/refractory chronic lymphocytic leukaemia receiving 4 weekly infusions of ofatumumab. The ofatumumab concentration profiles were fitted well by a two-compartment model with different elimination rate constant at first infusion compared to the remaining infusions in line with the observed rapid and sustained B-cell depletion. Exposure to ofatumumab was linked to clinical outcomes: high exposure was associated with higher probability of overall clinical response and longer progression-free survival. This association still remained statistically significant even when adjusting for relevant baseline covariates including tumour burden
Original languageEnglish
Pages (from-to)58-71
JournalBritish journal of haematology
Volume150
Issue number1
DOIs
Publication statusPublished - 2010

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