Anti-mesothelin immunoconjugates and uses therefor

A - Human Necessities – 61 – K

Patent

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Details

A61K 47/48 (2006.01) A61P 35/00 (2006.01)

Patent

CA 2760114

The present invention provides immunoconjugates composed of antibodies, e.g., monoclonal antibodies, or antibody fragments that bind to mesothelin, that are conjugated to cytotoxic agents, e.g., maytansine, or derivatives thereof, and/or co- administered or formulated with one or more additional anti-cancer agents. The immunoconjugates of the invention can be used in the methods of the invention to treat and/or diagnose and/or monitor cancers, e.g. solid tumors. The immunoconjugates comprise antibodies and functional fragments containing such antigen-binding regions that are specific for the membrane-anchored, 40 kDa mesothelin polypeptide, which which is overexpressed in several tumors, such as pancreatic and ovarian tumors, mesothelioma and lung cancer cells.

La présente invention porte sur des immunoconjugués composés d'anticorps, par exemple d'anticorps monoclonaux ou de fragments d'anticorps qui se lient à la mésothéline, qui sont conjugués à des agents cytotoxiques, par exemple, la maytansine ou des dérivés de celle-ci, et/ou co-administrés ou formulés avec un ou plusieurs agents anti-cancéreux supplémentaires. Les immunoconjugués de l'invention peuvent être utilisés dans les procédés de l'invention pour traiter et/ou diagnostiquer et/ou surveiller des cancers, par exemple des tumeurs solides. Les immunoconjugués comprennent des anticorps et des fragments fonctionnels contenant de telles régions de liaison à l'antigène qui sont spécifiques pour le polypeptide de mésothéline de 40 kDa ancré à la membrane qui est surexprimé dans plusieurs tumeurs, telles que des tumeurs pancréatiques et ovariennes, des mésothéliomes et des cellules du cancer du poumon.

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