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:
Mar. 26, 2024
Filed:
Jul. 11, 2019
Applicant:
The U.s.a., As Represented BY the Secretary, Department of Health and Human Services, Bethesda, MD (US);
Inventors:
Dimiter S. Dimitrov, Pittsburgh, PA (US);
Zhongyu Zhu, Frederick, MD (US);
Sneha Ramakrishna, Bethesda, MD (US);
Terry J. Fry, Aurora, CO (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07K 16/28 (2006.01); A61K 31/365 (2006.01); A61K 35/17 (2015.01); A61K 39/00 (2006.01); A61K 47/68 (2017.01); C07K 14/705 (2006.01); G01N 33/574 (2006.01);
U.S. Cl.
CPC ...
C07K 16/2803 (2013.01); A61K 31/365 (2013.01); A61K 35/17 (2013.01); A61K 47/6803 (2017.08); A61K 47/6851 (2017.08); C07K 14/705 (2013.01); G01N 33/574 (2013.01); A61K 2039/505 (2013.01); C07K 2317/31 (2013.01); C07K 2317/53 (2013.01); C07K 2317/565 (2013.01); C07K 2317/94 (2013.01); C07K 2319/02 (2013.01); C07K 2319/03 (2013.01);
Abstract
An affinity matured anti-CD22 human monoclonal antibody exhibiting significantly higher affinity (less than 50 pM) compared to the parental antibody (affinity of about 2 nM) is described. The anti-CD22 variant antibody or a fragment thereof, such as a single-chain variable fragment (scFv), can be used as the antigen-binding portion of chimeric antigen receptors (CARs), antibody-drug conjugates (ADCs), immunotoxins or multi-specific antibodies for the treatment of B-cell malignancies.