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Updated: Jul 21, 2025

Spontaneous Murine Model of Anaplastic Thyroid Cancer
Published on: February 3, 2023
Mechanistic Insights of Thyroid Cancer Progression
Luis Javier Leandro-García1, Iñigo Landa2
1Hereditary Endocrine Cancer Group, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain.
Abstract:
Differentiated thyroid cancers (DTCs) are primarily initiated by mutations that activate the MAPK signaling cascade, typically at BRAF or RAS oncoproteins. DTCs can evolve to more aggressive forms, specifically, poorly differentiated (PDTC) and anaplastic thyroid cancers (ATC), by acquiring additional genetic alterations which deregulate key pathways. In this review, we focused on bona fide mutations involved in thyroid cancer progression for which consistent mechanistic data exist. Here we summarized the relevant literature, spanning approximately 2 decades, highlighting genetic alterations that are unquestionably enriched in PDTC/ATC. We describe the relevant functional data obtained in multiple in vitro and in vivo thyroid cancer models employed to study genetic alterations in the following genes and functional groups: TP53, effectors of the PI3K/AKT pathway, TERT promoter, members of the SWI/SNF chromatin remodeling complex, NF2, and EIF1AX. In addition, we briefly discuss other genetic alterations that are selected in aggressive thyroid tumors but for which mechanistic data is still either limited or nonexistent. Overall, we argue for the importance conveyed by preclinical studies for the clinical translation of genomic knowledge of thyroid cancers.
Insights
This review details key genetic mutations driving thyroid cancer progression from differentiated to aggressive forms. Understanding these alterations is crucial for developing targeted therapies and improving patient outcomes.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Differentiated thyroid cancers (DTCs) originate from MAPK pathway mutations (BRAF, RAS).
- Thyroid cancer progression to poorly differentiated (PDTC) and anaplastic (ATC) forms involves accumulating genetic alterations.
- Identifying key mutations is vital for understanding thyroid cancer evolution and treatment resistance.
Approach:
- Comprehensive review of literature over two decades focusing on bona fide mutations in thyroid cancer progression.
- Analysis of genetic alterations with robust mechanistic data in PDTC/ATC.
- Examination of functional data from in vitro and in vivo models for specific genes and pathways.
Key Points:
- TP53 mutations, PI3K/AKT pathway effectors, TERT promoter mutations, SWI/SNF complex alterations, NF2, and EIF1AX are significantly enriched in aggressive thyroid cancers.
- Mechanistic data supports the role of these genetic alterations in thyroid cancer progression.
- Other genetic changes in aggressive tumors are noted, though mechanistic data may be limited.
Conclusions:
- Preclinical studies are essential for translating genomic insights into clinical applications for thyroid cancer.
- Targeting specific genetic pathways identified in this review holds promise for novel therapeutic strategies.
- Further research into less-understood genetic alterations could uncover new therapeutic targets for advanced thyroid cancers.
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