Humanized anti-CD22 antibody
US-9139649-B2 · Sep 22, 2015 · US
Humanized anti-CD22 antibody
US9518115B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9518115-B2 |
| Application number | US-201514824751-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 12, 2015 |
| Priority date | Feb 25, 2014 |
| Publication date | Dec 13, 2016 |
| Grant date | Dec 13, 2016 |
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Abstract
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Disclosed are humanized RFB4 antibodies or antigen-binding fragments thereof. therapy of B-cell associated diseases, such as B-cell malignancies, autoimmune disease and immune dysfunction disease. Preferably, hRFB4 comprises the light and heavy chain RFB4 CDR sequences with human antibody FR and constant region sequences, along with heavy chain framework region (FR) amino acid residues Q1, F27, V48, A49, F68, R98, T117 and light chain residues L4, S22, K39, G100, V104, and K107. More preferably, the heavy and light chain variable region sequences of hRFB4 comprise SEQ ID NO:7 and SEQ ID NO:8, respectively. In certain embodiments, trogocytosis (antigen shaving) induced by hRFB4 plays a significant role in determining antibody efficacy and disease responsiveness for treatment of B-cell diseases, such as hematopoietic cancers, immune system dysfunction and/or autoimmune disease.
First claim
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What is claimed is: 1. A humanized anti-CD22 antibody or antigen-binding fragment thereof comprising heavy chain complementarity determining region (CDR) sequences CDR1 (IYDMS, SEQ ID NO:1), CDR2 (YISSGGGTTYYPDTVKG, SEQ ID NO:2) and CDR3 (HSGYGSSYGVLFAY, SEQ ID NO:3), light chain CDR sequences CDR1 (RASQDISNYLN, SEQ ID NO:4), CDR2 (YTSILHS, SEQ ID NO:5) and CDR3 (QQGNTLPWT, SEQ ID NO:6), heavy chain framework region (FR) amino acid residues Q1, V5, F27, S30, V48, A49, R67, F68, R98…
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Human Necessities · mapped topic
Human Necessities · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Human Necessities · mapped topic
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Frequently asked questions
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- What does patent US9518115B2 cover?
- Disclosed are humanized RFB4 antibodies or antigen-binding fragments thereof. therapy of B-cell associated diseases, such as B-cell malignancies, autoimmune disease and immune dysfunction disease. Preferably, hRFB4 comprises the light and heavy chain RFB4 CDR sequences with human antibody FR and constant region sequences, along with heavy chain framework region (FR) amino acid residues Q1, F27,…
- Who is the assignee on this patent?
- Immunomedics Inc
- What technology area does this patent fall under?
- Primary CPC classification C07K16/2803. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 13 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).