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How has the classification system for cancer evolved over time and what factors have influenced these changes? 


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The classification system for cancer has evolved over time due to several factors. Traditionally, cancers were classified based on anatomical location, but advancements in cancer genomics have led to a paradigm shift in classification . The World Health Organization (WHO) and the Union for International Cancer Control (UICC) have incorporated biologic and molecular-genetic features into their classifications, which has had a significant impact on cancer diagnosis and treatment . The development of molecular profiling technologies, such as multi-regional sequencing and single cell analysis, has provided a better understanding of the genomic, transcriptomic, and epigenetic mechanisms of cancer, leading to a renewed interest in the analysis of these factors . Additionally, the recognition of the importance of evolutionary and ecological processes in cancer has led to the proposal of a framework for classifying tumors based on intratumoral heterogeneity, changes over time, hazards to neoplastic cell survival, and available resources . These changes in the classification system have the potential to personalize interventions based on the evolvability of the patient's tumor .

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The classification system for cancer has evolved from anatomical location-based to molecular targeted therapies based on specific genetic mutations in tumors. This shift is influenced by the development of molecular targeted therapies and the identification of class-specific and drug-specific toxicities.
The paper discusses the evolution of cancer classification from organ-based naming to finer subtypes based on clinical and biological features. Factors influencing changes include genomic data, larger sample cohorts, diverse -omics data types, and gene-gene correlations.
The paper proposes a framework for classifying tumors based on evolutionary and ecological factors, but does not discuss the evolution of the classification system over time or the factors that have influenced these changes.
Open accessJournal ArticleDOI
15 Apr 2020-Cancers
27 Citations
The classification system for cancer has evolved to include biologic and molecular-genetic features, which have been influenced by advances in cancer genomics.
The provided paper does not discuss the evolution of the classification system for cancer or the factors that have influenced these changes.

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