The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2023
Filed:
Sep. 17, 2020
Immunogen, Inc., Waltham, MA (US);
Scott A. Hilderbrand, Swampscott, MA (US);
Benjamin M. Hutchins, Boxborough, MA (US);
IMMUNOGEN, INC., Waltham, MA (US);
Abstract
The invention relates to novel methods of preparing cell-binding agent-cytotoxic agent conjugates, wherein the cytotoxic agent is an imine-containing cytotoxic agent bearing a maleimide group. In some embodiments, the cell-binding agent (CBA) is covalently linked to the cytotoxic agent through an engineered Cys, such as an engineered Cys in the heavy chain CH3 domain, at a position corresponds to the EU/OU numbering position 442 (or C442) on an antibody CBA. The invention also provides conjugates prepared by the methods of the present invention, compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the conjugates of the invention.