Exceptional behavior of breast cancer-associated type 1 gene in breast invasive carcinoma

Cellular expression level of Breast Cancer-Associated Type 1 (BRCA1) encoded protein is the sign of genome integrity, stability, and surveillance. BRCA1 after sensing DNA damage activates repairing system and if mutated leaves genomic lesions unrepaired and triggers transformation of normal breast cells into cancerous ones.

We conducted in silico study to have a holistic view of BRCA1's correlation with multiple variables of breast invasive carcinoma.

We used user-friendly online GeneCardsSuite pathway-level enrichment analysis, UALCAN portal differential expression analysis, cBioPortal cancer genome platform for mutatome map construction, and cancer cell lines encyclopedia genomics of drug sensitivity toolkit to understand correlation of BRCA1 expression with the effectiveness of anti-cancer drugs.

Contrary to general behavior of a tumor suppressor gene our study revealed BRCA1 overexpression under all circumstances. This novel finding needs to be explored further to understand functional impact of BRCA1 overexpression on the expression of many genes which are transcriptionally regulated by BRCA1 and promotion of tumriogenesis.

Our study highlights the potential role of BRCA1-regulated genes in oncogenesis and recommends use of BRCA1-linked genes as future therapeutic targets for effective disease management.