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Updated: Jul 4, 2026

Testing Targeted Therapies in Cancer using Structural DNA Alteration Analysis and Patient-Derived Xenografts
Published on: July 25, 2020
Genomic signatures for individualized treatment of malignant tumors
1Department of Dermatology and Venereology, University of Rostock, 18055 Rostock, Germany. manfred.kunz@med.uni-rostock.de
Abstract:
In recent years, significant progresses have been achieved in clinical oncology due to a plethora of new chemotherapeutic drugs and agents for targeted therapy. However, clinical response and overall survival rates have not improved significantly for a large number of different tumors. This may at least in part be due to the enormous genetic heterogeneity among tumors, even within a tumor entity. Moreover, besides individual somatic mutations or combinations of these in malignant tumors, the genetic background of each individual cancer patient appears to have a major impact on treatment response and overall survival. Current DNA microarray technology allows the simultaneous gene expression analysis of all known genes, and large-scale gene expression studies have provided new molecular classifications for a series of different tumors. Evidence has also been provided that gene expression signatures of malignant tumors may predict treatment response to classical chemotherapeutic or targeted anticancer drugs. The presented report summarizes the current knowledge about the role of gene expression signatures as putative guides for treatment decisions, with the future prospect of individualized treatment approaches for cancer patients.
Insights
Gene expression signatures in tumors show promise for predicting cancer treatment response. This could lead to personalized medicine, improving patient outcomes despite tumor genetic heterogeneity.
Area of Science:
- Oncology
- Genomics
- Molecular Biology
Background:
- Despite advances in chemotherapy and targeted therapy, significant improvements in clinical response and survival rates for many cancers remain elusive.
- Tumor genetic heterogeneity and individual patient genetic background significantly impact treatment efficacy and prognosis.
- Current DNA microarray technology enables comprehensive gene expression analysis, leading to new tumor classifications.
Purpose of the Study:
- To review the current understanding of gene expression signatures in predicting cancer treatment response.
- To explore the potential of gene expression signatures for guiding clinical decisions.
- To discuss the future prospects of individualized cancer treatment approaches.
Main Methods:
- Review of current scientific literature on gene expression signatures in oncology.
- Analysis of studies utilizing DNA microarray technology for gene expression profiling.
- Synthesis of evidence linking gene expression patterns to treatment response and survival.
Main Results:
- Gene expression signatures can provide new molecular classifications for various tumors.
- Evidence suggests that gene expression signatures may predict patient response to chemotherapy and targeted therapies.
- Individual genetic background plays a crucial role in treatment outcomes.
Conclusions:
- Gene expression signatures hold significant potential as predictive biomarkers for cancer therapy.
- Personalized treatment strategies based on gene expression profiles could improve patient outcomes.
- Further research is warranted to fully integrate gene expression signatures into clinical decision-making.
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