Stable Liver Function during Long-Term Administration of Eltrombopag, a Thrombopoietin Receptor Agonist, in Patients with Chronic Liver Disease

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  • Kurokawa Tomohiro
    Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba
  • Murata Soichiro
    Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba
  • Ohkohchi Nobuhiro
    Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba

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<p>Liver cirrhosis is the end stage of chronic liver disease, but no definitive pharmacological treatment is currently available. It has been reported that thrombopoietin (TPO) promotes liver regeneration and improves liver cirrhosis by increasing platelet count. We have shown the direct effect of platelet transfusion on the improvement of liver function in patients with chronic liver disease. However, platelet transfusion often causes adverse events, such as platelet transfusion refractoriness and pruritus. Therefore, we conducted an exploratory clinical trial and administered eltrombopag, an orally bioavailable, small-molecule, non-peptide TPO receptor agonist that has been approved for the treatment of chronic idiopathic thrombocytopenic purpura. The study included five male patients, aged from 49 to 75 years (57.6 ± 10.4 years), with both chronic liver disease and hepatitis C virus infection, who presented with thrombocytopenia but without cancer. Eltrombopag, ranged from 6.25 to 50 mg/day (18.75 ± 18.22 mg/day), was administrated to the five patients during six months. All of the patients maintained platelet counts between 10 and 15 × 1010/L during the study. The indicators of liver function in patients were stable throughout the clinical trial, although we had predicted the same degree of the improvement of liver function, compared to platelet transfusion. Importantly, the liver volumes were also stable, and no cancerous lesions were observed. These results indicate the safety of long-term eltrombopag administration for patients with chronic liver disease and hepatitis C virus infection.</p>

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