THE ROLE OF BRCA1 AND BRCA2 GENES IN BREAST CANCER SUSCEPTIBILITY

Abstract

Background: The BRCA1 and BRCA2 genes function as essential elements for maintaining genomic stability, because mutations in these genes lead to heightened breast and ovarian cancer risk. The research into genetic causes of these cancers has resulted in improved methods for cancer prevention and early detection and treatment, which have transformed breast cancer treatment methods.

Methods: The paper examines current scientific studies about the BRCA1 and BRCA2 genes because their genetic alterations impact breast cancer risk through their effect on DNA repair systems and cell cycle regulation pathways. The study investigates future advancements of gene editing technologies and personalized medicine solutions which will enable treatment for patients that carry BRCA gene mutations.

Results: The BRCA1 and BRCA2 genes exhibit several types of mutations that include frameshift and nonsense and missense mutations which lead to failure of DNA repair systems. The lifetime risk of breast cancer for BRCA1 mutation carriers is approximately 72%, and for BRCA2, it is 69%. The clinical trials demonstrate effective results for therapies that target these mutations through PARP inhibitors. Scientists increasingly investigate CRISPR-based gene editing because they believe it can serve as a permanent solution to correct BRCA mutations.

Conclusion: The presence of BRCA1 and BRCA2 mutations increases the development risks of breast cancer and ovarian cancer to their highest possible levels. Genetic testing acts as an essential tool that enables the detection of individuals who face risk while it helps to develop methods for their early treatment. Future medical treatments will become more effective through the development of targeted therapies and gene editing technologies. The research about these genetic mutations needs to continue because it helps medical professionals to achieve better patient results while decreasing the worldwide breast cancer incidence.