Precision BioSciences (DTIL) Receives Notice of Allowance for U.S. Patent Application Covering PBCAR19B, a Stealth Cell, CD19 Allogeneic CAR T Candidate for Non-Hodgkin Lymphoma

January 25, 2021 7:02 AM EST

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Precision BioSciences, Inc. (Nasdaq: DTIL) a clinical stage biotechnology company dedicated to improving life with its wholly proprietary ARCUS® genome editing platform, today announced it has received a Notice of Allowance from the U.S. Patent and Trademark Office for a patent application covering PBCAR19B, a next-generation, stealth cell, CD19 product candidate for patients with relapsed/refractory (R/R) Non-Hodgkin Lymphoma (NHL).

The allowed composition claims of U.S. Patent Application No. 16/908,030 encompass genetically-modified human T cells comprising the Company’s PBCAR19B construct, which is inserted within the T cell receptor alpha constant (TRAC) locus. Once issued, patents arising from this patent family will have standard expiration dates in April 2040.

“This patent, when issued, will cover important design elements of our PBCAR19B stealth cell candidate, which is engineered to knock down expression of beta-2 microglobulin to reduce killing of CAR T cells by cytotoxic T cells, and to reduce CAR T cell rejection by natural killer cells,” said Derek Jantz, Ph.D., Chief Scientific Officer and Co-Founder of Precision BioSciences. “Additionally, PBCAR19B CAR T cells are generated using a single gene editing step by inserting one cassette, encoding all the necessary elements, into the TRAC locus. Not only will this patent strengthen our intellectual property portfolio, it will further distinguish our ARCUS-based allogeneic CAR T development approach.”



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