C - Chemistry – Metallurgy – 07 – K
Patent
C - Chemistry, Metallurgy
07
K
C07K 16/46 (2006.01) A61K 39/395 (2006.01) C07K 16/24 (2006.01) A61K 38/00 (2006.01)
Patent
CA 2087541
2087541 9201472 PCTABS00010 A multivalent immunoglobulin which comprises at least three linked antigen binding domains each of said domains being specific for a complementary site on a cytokine, (e.g. TNF-.alpha., TNF-.beta., an interleukin, an interferon, such as IFN-.gamma., or/and a colony stimulating factor) and characteristically interacts with the cytokine to neutralise its biological activity. The multivalent immunoglobulins have suprisingly increased neutralising activity and are useful for therapeutic or prophylactic treatment of conditions involving undesirably elevated levels of the cytokine. Preferably the multivalent immunoglobulin comprises from 4 to 20 antigen binding domains, which are especially of class IgG. The multivalent immunoglobulin may comprise recombinant immunoglobulin molecules and fragments thereof, and the antigen binding domains may be covalently or non-covalently linked.
Allen Rodger Anthony
Morgan Susan Adrienne
Celltech Therapeutics Limited
Kirby Eades Gale Baker
LandOfFree
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