Human Antibody against Interleukin-20 and Treatment for Inflammatory Diseases
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United States of America Patent
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Issued Date -
Oct 23, 2014
app pub date -
Apr 18, 2013
filing date -
Apr 18, 2013
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Abstract
FLB5M5 is a humanized monoclonal antibody with three mutated amino acids in the CDRs relative to its parental mouse anti-IL-20 monoclonal antibody 7E and five mutated amino acids of the light-chain framework region relative to the amino acids of the light-chain framework region of human Vκ2. FLB5M5 not only retains binding specificity toward IL-20 but also has a better binding affinity than 7E for IL-20. FLB5M5 is also less immunogenic than 7E to the human host in clinical application. A mutation in the light chain CDR to tyrosine increases binding affinity to IL-20. A method for treating rheumatoid arthritis using FLB5M5 is also disclosed.
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