Anti-pancreatic cancer antibodies

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/28 (2006.01) A61K 39/395 (2006.01) A61K 47/48 (2006.01) A61K 49/00 (2006.01) A61K 51/10 (2006.01) A61P 35/00 (2006.01) C07K 16/18 (2006.01) C07K 16/46 (2006.01) C07K 19/00 (2006.01) G01N 33/574 (2006.01)

Patent

CA 2731438

Described herein are compositions and methods of use of anti-pancreatic cancer antibodies or fragments thereof, such as murine, chimeric, humanized or human PAM4 antibodies. The subject antibodies show a number of novel and useful therapeutic characteristics, such as binding with high specificity to pancreatic and other cancers, but not to normal or benign pancreatic tissues and binding to a high percentage of early stage pancreatic cancers. In preferred embodiments, the antibodies bind to pancreatic cancer mucins. The antibodies and fragments are of use for the detection, diagnosis and/or treatment of cancer, such as pancreatic cancer. The antibodies, such as PAM4 antibodies, bind to a PAM4 antigen that shows unique cell and tissue distributions compared with other known antibodies such as CA 19.9, DUPAN2, SPAN1, Nd2, B72.3, and Lea a and Le(y) antibodies that bind to the Lewis antigens.

La présente invention concerne des compositions et des procédés dutilisation danticorps anti-cancer pancréatique ou des fragments de ceux-ci, tels que des anticorps PAM4 murins, chimères, humanisés ou humains. Les présents anticorps présentent plusieurs caractéristiques thérapeutiques nouvelles et utiles telles que la liaison avec une spécificité élevée au cancer pancréatique et à dautres cancers, mais pas aux tissus pancréatiques normaux ou bénins et la liaison à un pourcentage élevé de cancers pancréatiques à un stade précoce. Dans des modes de réalisation préférés, les anticorps se lient à des mucines de cancer pancréatique. Les anticorps et fragments sont utiles pour la détection, le diagnostic et/ou le traitement du cancer, tel que le cancer pancréatique. Les anticorps tels que les anticorps PAM4, se lient à un antigène PAM4 qui présente des distributions cellulaire et tissulaire uniques par rapport à dautres anticorps connus tels que les anticorps CA19.9, DUPAN2, SPAN1, Nd2, B72.3 et Leaª et Le(y) qui se lient à des antigènes Lewis.

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