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Method to enhance CAR-T cell efficacy using NOS inhibitor

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Summary

The USPTO has published a patent application (US20260083844A1) detailing a method to enhance CAR-T cell efficacy by downregulating nitric oxide synthase (NOS). This application describes a potential therapeutic approach for treating B cell malignancies that are resistant to current CAR-T cell treatments.

Published by USPTO on changeflow.com . Detected, standardized, and enriched by GovPing. Review our methodology and editorial standards .

What changed

This document is a published patent application from the USPTO, not a regulatory rule or guidance. It describes a method for enhancing the anti-tumor efficacy of immune effector cells, such as CAR-T cells, by administering a nitric oxide synthase (NOS) inhibitor. The application, filed by inventors Marco Davila and Sae Bom Lee, aims to address primary resistance and relapse in patients with large B cell lymphoma (LBCL) treated with CAR-T cells, suggesting that anti-inflammatory macrophages suppress CAR-T cell function.

As this is a patent application, it does not impose direct compliance obligations on regulated entities. However, it signals potential future developments in CAR-T cell therapy and related pharmaceutical research. Companies involved in CAR-T cell development or the manufacturing of related therapeutics may find this disclosure relevant for competitive intelligence and R&D strategy. No immediate actions or deadlines are associated with this publication.

Archived snapshot

Mar 27, 2026

GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.

← USPTO Patent Applications

DOWNREGULATING INOS TO INCREASE CAR-T KILLING

Application US20260083844A1 Kind: A1 Mar 26, 2026

Inventors

Marco DAVILA, Sae Bom LEE

Abstract

Chimeric antigen receptor (CAR) T cell therapies have revolutionized the treatment of B cell malignancies, but a significant proportion of patients with large B cell lymphoma (LBCL) experience primary resistance or relapse after CAR T cell treatment. As disclosed herein, anti-inflammatory macrophages suppress CAR-T cell expansion, induce death, and reduce CAR expression. Disclosed is a method for enhancing anti-tumor efficacy of immune effector cells, such as CAR-T cells, in a subject that involves administering to the subject a nitric oxide synthase (NOS) inhibitor.

CPC Classifications

A61K 40/11 A61K 31/155 A61K 31/198 A61K 31/381 A61K 31/416 A61K 31/4164 A61K 40/31 A61K 40/4211 A61P 35/00 C07K 16/249 C12N 15/1136 C12N 2310/14

Filing Date

2023-09-15

Application No.

19109722

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Classification

Agency
USPTO
Instrument
Notice
Legal weight
Non-binding
Stage
Draft
Change scope
Minor
Document ID
US20260083844A1

Who this affects

Applies to
Drug manufacturers Healthcare providers
Industry sector
3254 Pharmaceutical Manufacturing 3254.1 Biotechnology
Activity scope
CAR-T cell therapy development Pharmaceutical research
Geographic scope
United States US

Taxonomy

Primary area
Pharmaceuticals
Operational domain
Research & Development
Topics
Healthcare Biotechnology

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