| abstract |
Variants of antibodies to human tissue factor are optimized for the capability to elicit effector functions produced by immune effector cells while maintaining the ability to neutralize the biological functions of tissue factor, such as the prevention of blood clotting via the extrinsic pathway, and are produced by mutations of the Fc-region of the antibody. The variants comprise A33 OY, A3301, and I332E where the I332E variant may optionally further comprise a second substitution selected from A33OI (in the case of the first substitution being I332E), V264I, and S239D. The variants may further be optimized for the capability to elicit effector functions produced by immune effector cells by production of the antibody variants under conditions that produce effector function enhancing glycosylation of the Fc-region. |