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Clin Pharmacol Drug Dev ; 10(8): 870-883, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33512065

RESUMO

OX40 plays an essential role in maintaining late T-cell proliferation and survival by suppressing apoptosis and by inducing T-cell memory formation. Here, we report the results of the phase 1 study of KHK4083, a fully human antimonoclonal antibody specific for OX40. In this study, we aimed to assess the safety and tolerability of a single intravenous or subcutaneous administration of KHK4083 compared with placebo in healthy Japanese and Caucasian subjects and determined the pharmacokinetics (PK) and immunogenicity. Also, we assessed the preliminary efficacy and pharmacodynamics of multiple intravenous doses in Japanese patients with moderate to severe ulcerative colitis (UC). Drug-related treatment emergent adverse events occurred in 21 healthy subjects (58.3%) and 5 patients with UC (62.5%) after administration of KHK4083. There were no serious adverse events. The PK profile of a single intravenous dose of 10 mg/kg KHK4083 was similar in healthy Japanese and Caucasian subjects. Of 8 UC patients, a clinical response was observed in 3 patients (37.5%) and clinical remission in 2 patients (25.0%) in week 6. Our study demonstrated the safety and tolerability of single and multiple administrations of KHK4083 in healthy Japanese and Caucasian subjects and Japanese patients with moderate to severe UC. It also indicated favorable pharmacological properties of the drug.


Assuntos
Anticorpos Monoclonais Humanizados/administração & dosagem , Colite Ulcerativa/tratamento farmacológico , Ligante OX40/metabolismo , Administração Intravenosa , Adulto , Anticorpos Monoclonais Humanizados/efeitos adversos , Anticorpos Monoclonais Humanizados/farmacocinética , Povo Asiático/estatística & dados numéricos , Colite Ulcerativa/metabolismo , Esquema de Medicação , Feminino , Voluntários Saudáveis , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Método Simples-Cego , Resultado do Tratamento , População Branca/estatística & dados numéricos
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