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Published on: September 13, 2019
Molecular genetics of small round cell tumors
1Department of Pathology and Laboratory Medicine, Childrens Hospital Los Angeles, University of Southern California School of Medicine 90027, USA.
Abstract:
The small round cell tumors of children and young adults constitute part of a group of undifferentiated tumors, the precise diagnosis of which is often a challenge for the pathologist because of their uniform morphological appearance. Diagnostic cytogenetic analysis and identification of specific chromosomal abnormalities have been especially useful for the classification of some of these tumors. The cloning of the genes and molecular characterization of the associated genetic anomalies have led to the discovery of the mechanisms involved in their neoplastic transformation and identified a variety of tumor-specific molecular genetic markers. Information has also been provided regarding the histogenetic origin and mechanisms of differentiation in these tumors. This review focuses on the tumor-specific genetic markers, particularly those of clinical relevance, and the recently identified genes and deregulation mechanisms associated with them. The availability of these markers provides auxiliary methods with increasingly improved resolution for primary diagnosis and classification of histologically similar tumors and tools for monitoring patients and identifying potential antineoplastic therapy targets.
Insights
Small round cell tumors in young patients are challenging to diagnose due to similar appearances. Genetic markers and molecular analysis offer improved classification and potential therapeutic targets.
Area of Science:
- Oncology
- Genetics
- Pathology
Background:
- Small round cell tumors in children and young adults present diagnostic challenges due to uniform morphology.
- Accurate classification is crucial for effective treatment and understanding tumor development.
Purpose of the Study:
- To review tumor-specific genetic markers and molecular alterations in small round cell tumors.
- To highlight the clinical relevance of these markers for diagnosis, prognosis, and therapy.
Main Methods:
- Review of diagnostic cytogenetic analysis and molecular characterization of genetic anomalies.
- Identification and analysis of tumor-specific molecular genetic markers and associated genes.
- Exploration of neoplastic transformation mechanisms and histogenetic origins.
Main Results:
- Specific chromosomal abnormalities and molecular markers aid in classifying these tumors.
- Discovery of genes and deregulation mechanisms involved in neoplastic transformation.
- Identification of clinically relevant markers for diagnosis and patient monitoring.
Conclusions:
- Molecular genetic markers provide valuable auxiliary tools for diagnosing and classifying small round cell tumors.
- These markers facilitate patient monitoring and the identification of potential targets for antineoplastic therapies.
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