Related Experiment Video
Updated: Jun 26, 2026

08:16
X-ray Visualization of Intraductal Ethanol-based Ablative Infusion for Prevention of Breast Cancer in Rabbit Models
Published on: September 12, 2025
[Breast cancer: new concepts in classification]
Daniella Serafin Couto Vieira1, Rozany Mucha Dufloth, Fernando Carlos Lander Schmitt
1Departamento de Patologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
Summary
Molecular profiling refines breast cancer subtypes, improving tumor classification and identifying potential therapeutic targets. This advances personalized medicine for better patient outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Genomics
Context:
- Breast cancer is a leading cause of cancer death in women.
- Molecular profiling via cDNA microarray has identified five distinct breast cancer subtypes.
- Current classification systems are suboptimal, leading to varied treatment responses.
Purpose:
- To review recent advancements in breast carcinoma classification and characterization.
- To highlight the role of molecular profiling in defining breast cancer subtypes.
- To discuss the need for improved predictive markers and therapeutic targets.
Summary:
- Tissue microarrays (TMA) enable detailed study of gene expression patterns in breast tumors.
- Molecular portraits derived from genetic profiling aid in refining tumor taxonomy.
- Basal breast tumors, a challenging subtype, often present with poor prognosis and lack clear therapeutic targets.
Impact:
- Enhanced molecular taxonomy improves breast cancer classification.
- Genetic profiling facilitates the identification of novel therapeutic targets.
- Better predictive markers are crucial for guiding treatment decisions and improving patient outcomes.
Related Concept Videos
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Classification of Epithelial Tissues: Overview
Epithelial tissues are classified according to the shape of the cells and the number of cell layers formed. Cell shapes can be squamous (flattened and thin), cuboidal (square-like, as wide as it is tall), or columnar (rectangular, taller than it is wide). Additionally, the nucleus shape helps identify the type of epithelial cells. Squamous cells have flattened disc-shaped nuclei, cuboidal cells have spherical nuclei, and columnar cells have elongated nuclei.
Based on the number of cell layers,...
Based on the number of cell layers,...
Cancer Survival Analysis
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...