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Updated: May 16, 2026

Profiling Sensitivity to Targeted Therapies in EGFR-Mutant NSCLC Patient-Derived Organoids
Published on: November 22, 2021
[Individualization of anticancer therapy; molecular targets of novel drugs in oncology]
Katarzyna Regulska1, Beata Stanisz, Miłosz Regulski
1Wielkopolskie Centrum Onkologii im. Marii Curie-Skłodowskiej w Poznaniu, ul. Garbary 15, 61-866 Poznań, Poland. katarzyna.regulska@wco.pl
Abstract:
Deregulation of cellular signal transduction, caused by gene mutations, has been recognized as a basic factor of cancer initiation, promotion and progression. Thus, the ability to control the activity of overstimulated signal molecules by the use of appropriate inhibitors became the idea of targeted cancer therapy, which has provided an effective tool to normalize the molecular disorders in malignant cells and to treat certain types of cancer. The molecularly targeted drugs are divided into two major pharmaceutical classes: monoclonal antibodies and small-molecule kinase inhibitors. This review presents a summary of their characteristics, analyzing their chemical structures, specified molecular targets, mechanisms of action and indications for use. Also the molecules subjected to preclinical trials or phase I, II and III clinical trials evaluating their efficiency and safety are presented. Moreover, the article discusses further perspectives for development of targeted therapies focusing on three major directions: systematic searching and discovery of new targets that are oncogenic drivers, improving the pharmacological properties of currently known drugs, and developing strategies to overcome drug resistance. Finally, the role of proper pharmacodiagnostics as a key to rational anticancer therapy has been emphasized since the verification of reliable predictive biomarkers is a basis of individualized medicine in oncology.
Insights
Targeted cancer therapy uses drugs to control overactive signaling molecules, offering an effective treatment for various cancers. This approach normalizes molecular disorders in malignant cells, improving patient outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Gene mutations deregulate cellular signal transduction, driving cancer initiation, promotion, and progression.
- Targeted cancer therapy aims to control overstimulated signal molecules using specific inhibitors.
- This therapeutic strategy normalizes molecular disorders in malignant cells and treats certain cancers.
Purpose of the Study:
- To review the characteristics of molecularly targeted drugs, including monoclonal antibodies and small-molecule kinase inhibitors.
- To analyze their chemical structures, molecular targets, mechanisms of action, and clinical indications.
- To discuss future directions in targeted therapy development and the role of pharmacodiagnostics.
Main Methods:
- Literature review of targeted cancer therapies.
- Analysis of drug characteristics, including chemical structures and molecular targets.
- Summary of preclinical and clinical trial data (Phase I, II, III) for efficacy and safety.
- Discussion of future perspectives and pharmacodiagnostics.
Main Results:
- Targeted drugs, categorized as monoclonal antibodies and small-molecule kinase inhibitors, offer effective cancer treatment.
- Review includes analysis of drug properties, targets, mechanisms, and clinical applications.
- Current research and development focus on new targets, drug improvement, and overcoming resistance.
Conclusions:
- Targeted therapy is a key strategy for normalizing molecular abnormalities in cancer.
- Future development hinges on identifying new oncogenic targets, enhancing drug properties, and managing resistance.
- Pharmacodiagnostics and predictive biomarkers are crucial for personalized cancer treatment.
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