Genomic profiling of breast cancers

Area of Science:

• Genomics
• Oncology
• Biomarker Discovery

Background:

• Breast cancer exhibits significant molecular heterogeneity.
• Accurate prognostication and treatment response prediction remain critical challenges.

Purpose of the Study:

• To review recent advancements in applying genomic technologies to breast cancer research.
• To identify novel biomarkers for prognosis and treatment response.
• To discuss implications for precision cancer medicine.

Main Methods:

• High-throughput genomic profiling (e.g., massively parallel sequencing).
• Analysis of somatic alterations in breast tumors.
• Genomic profiling of cell-free tumor DNA and circulating tumor cells (liquid biopsies).
• Single-cell genomics.

Main Results:

• Cataloguing of somatic alterations and definition of molecular subgroups.
• Identification of novel subtype-specific oncogenes and therapeutic targets (e.g., HER2 mutations).
• Demonstration of liquid biopsies for monitoring treatment resistance and disease burden.
• Emerging role of single-cell genomics in understanding tumor evolution.

Conclusions:

• Genomic technologies are crucial for elucidating breast cancer biology.
• These technologies facilitate the discovery of therapeutic targets and improve patient prognostication and stratification.
• The findings support the advancement of precision medicine in breast cancer care.