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USPTO Patent Application: Small Molecule Inhibitors of KRAS Proteins for Cancer Treatment

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Published March 26th, 2026
Detected March 26th, 2026
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Summary

The USPTO has published a patent application (US20260083750A1) detailing small molecule inhibitors of KRAS proteins for cancer treatment. The application describes compounds that can inhibit specific KRAS protein mutants and their potential utility as therapeutic agents for cancer.

What changed

This document is a publication of a United States Patent and Trademark Office (USPTO) patent application, specifically application number US20260083750A1, filed on August 24, 2023, and published on March 26, 2026. The application, titled "Small molecule inhibitors of KRAS proteins for cancer treatment," discloses compounds of Formula (I) or their pharmaceutically acceptable salts, which are designed to inhibit specific mutant forms of the Kirsten rat sarcoma (KRAS) protein (G12C, G12D, G12V, and/or G13D). These compounds are presented as having potential therapeutic utility for treating cancer, and the disclosure includes pharmaceutical compositions and methods for their use in cancer therapy and prophylaxis.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on regulated entities. However, it signifies potential future developments in cancer therapeutics. Pharmaceutical companies and drug manufacturers involved in oncology research and development should be aware of this disclosure as it may relate to their intellectual property landscape and future drug development strategies. No immediate actions are required from a compliance perspective, but monitoring patent filings in this therapeutic area is advisable for strategic planning.

Source document (simplified)

← USPTO Patent Applications

SMALL MOLECULE INHIBITORS OF KRAS PROTEINS

Application US20260083750A1 Kind: A1 Mar 26, 2026

Inventors

CHRISTIAN FISCHER, TIMOTHY HENDERSON, SHUHEI KAWAMURA, XIAOSHEN MA, MATTHEW J. MITCHELTREE, DAVID L. SLOMAN, GIANNI CHESSARI, YU KOBAYAKAWA, TAKAO UNO, TSUYOSHI OSHIMA, KEIICHI SUMIYAMA, TOSHIHIRO SAKAMOTO, KEI AKEMOTO, RISAKO MIURA

Abstract

Compounds of Formula (I) or their pharmaceutically acceptable salts can inhibit the G12C, G12D, G12V, and/or G13D mutants of Kirsten rat sarcoma (KRAS) protein and are expected to have utility as therapeutic agents, for example, for treating cancer. The disclosure also provides pharmaceutical compositions which comprise compounds of Formula (I) or pharmaceutically acceptable salts thereof. The disclosure also relates to methods for use of the compounds or their pharmaceutically acceptable salts in the therapy and prophylaxis of cancer and for preparing pharmaceuticals for this purpose.

CPC Classifications

A61K 31/553 A61K 31/517 A61K 31/5377 A61K 31/5386 A61K 31/554 A61K 45/06 C07D 413/14 C07D 471/04 C07D 487/04 C07D 519/00

Filing Date

2023-08-24

Application No.

19106950

View original document →

Named provisions

Inventors Abstract CPC Classifications Filing Date

Classification

Agency
USPTO
Published
March 26th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
US20260083750A1

Who this affects

Applies to
Drug manufacturers Pharmaceutical companies
Industry sector
3254 Pharmaceutical Manufacturing
Activity scope
Drug Development Cancer Treatment
Geographic scope
United States US

Taxonomy

Primary area
Pharmaceuticals
Operational domain
R&D
Topics
Cancer Treatment Drug Development

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