Patent 10196445 was granted and assigned to Bristol-Myers Squibb on February, 2019 by the United States Patent and Trademark Office.
The present invention provides anti-CTLA-4 antibodies having enhanced ADCC activity, and their use in treating cancer. In one embodiment, the anti-CTLA-4 antibody is ipilimumab, and ADCC activity is enhanced by introducing G236A, S239D, A330L and I332E mutations (“GASDALIE”) into the Fc region of the heavy chain constant domain.