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Lebrikizumab
Lebrikizumab (INN) is a humanized monoclonal antibody and an experimental immunosuppressive drug for the treatment of asthma that cannot be adequately controlled with inhalable glucocorticoids. The drug was created by Tanox under the name ''TNX-650'', and a phase I clinical trial for refractory Hodgkin’s lymphoma had been performed when Genentech acquired Tanox in 2007. It has successfully completed a Phase II clinical trial for the treatment of asthma.
==Mechanism of action==
Lebrikizumab blocks interleukin 13 (IL-13), a cytokine (cell-signalling protein) that is produced by Th2 cells, a type of white blood cells. IL-13 is thought to induce the expression of another signalling protein, periostin, by epithelial cells of the bronchi. Periostin in turn seems to partake in a number of asthma related problems, such as bronchial hyperresponsiveness, inflammation, and activation and proliferation of airway fibroblasts, which are involved in airway remodelling.〔〔(【引用サイトリンク】title=Prous Science Molecule of the Month: Lebrikizumab )〕
This theory is supported by the fact that patients with high periostin levels responded significantly better to lebrikizumab in the Phase II study: the forced expiratory volume in 1 second (FEV1) was 8.2% higher than under placebo in this group (measured from the respective baselines), while low-periostin patients had 1.6% higher FEV1, and the average value for all patients was 5.5%. The FEV1 increase in low-periostin patients was not statistically significant.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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