Uses and methods of drug conjugates in treating tumor diseases

A biologically active conjugate targeting Trop-2 with a specific compound formula enhances treatment efficacy for refractory cancers by reducing tumor volume and improving response rates in cancers like triple-negative breast cancer and gastric cancer, addressing the limitations of current ADC drugs.

JP2026506975APending Publication Date: 2026-02-27SICHUAN KELUN BIOTECH BIOPHARMACEUTICAL CO LTD
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Patent Information

Application Number
JP2025547979
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-02-07
Filing Date
2024-02-22
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

Current ADC drugs face challenges in pharmacokinetics and safety, leading to serious adverse reactions and suboptimal response rates for metastatic, recurrent, and refractory cancers, necessitating improved treatment methods that maximize efficacy and minimize toxicity.

Method used

A biologically active conjugate represented by a specific compound formula, combining a monoclonal antibody or its antigen-binding fragment with a biologically active molecular fragment, is used to target and treat unresectable locally advanced or metastatic solid tumors that have failed standard treatments, including first-line chemotherapy, radiation therapy, and targeted therapy.

Benefits of technology

The conjugate effectively reduces tumor volume and improves response rates in cancers such as triple-negative breast cancer, Her2-positive breast cancer, ovarian cancer, and gastric cancer, with minimal side effects, even in patients with primary endocrine resistance and multiple chemotherapy lines.

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Abstract

Use of drug conjugates and methods for treating tumor diseases are provided. In particular, use of bioactive agent conjugates represented by formula (I) for treating HR+ / Her2- breast cancer is provided. Formula (I) is as follows: {D-[L1-(L2) m1 -(L3) m2 -(L4) m3 -E]} γ -A.
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