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Last Updated: September 22, 2020

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Patent: 9,580,685

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Summary for Patent: 9,580,685
Title:Truncated epiderimal growth factor receptor (EGFRt) for transduced T cell selection
Abstract: A non-immunogenic selection epitope may be generated by removing certain amino acid sequences of the protein. For example, a gene encoding a truncated human epidermal growth factor receptor polypeptide (EGFRt) that lacks the membrane distal EGF-binding domain and the cytoplasmic signaling tail, but retains an extracellular epitope recognized by an anti-EGFR antibody is provided. Cells may be genetically modified to express EGFRt and then purified without the immunoactivity that would accompany the use of full-length EGFR immunoactivity. Through flow cytometric analysis, EGFRt was successfully utilized as an in vivo tracking marker for genetically modified human T cell engraftment in mice. Furthermore, EGFRt was demonstrated to have cellular depletion potential through cetuximab mediated antibody dependent cellular cytotoxicity (ADCC) pathways. Thus, EGFRt may be used as a non-immunogenic selection tool, tracking marker, a depletion tool or a suicide gene for genetically modified cells having therapeutic potential.
Inventor(s): Jensen; Michael (Bainbridge Island, WA)
Assignee: City of Hope (Duarte, CA)
Application Number:14/340,512
Patent Claims:see list of patent claims

Details for Patent 9,580,685

Applicant Tradename Biologic Ingredient Dosage Form BLA Number Approval Date Patent No. Assignee Estimated Patent Expiration Status Orphan Source
Imclone ERBITUX cetuximab VIAL; INTRAVENOUS 125084 001 2004-06-18   Start Trial City of Hope (Duarte, CA) 2029-11-03 RX Orphan search
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Number >Approval Date >Patent No. >Assignee >Estimated Patent Expiration >Status >Orphan >Source

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