Related Experiment Video
Updated: Jan 8, 2026

Identifying the Effects of BRCA1 Mutations on Homologous Recombination using Cells that Express Endogenous Wild-type BRCA1
Published on: February 17, 2011
Revisiting the impact of BRCA1 pathogenic variants on the aggressiveness of prostate cancer
Hajime Sasagawa1,2, Shintaro Narita2, Koichi Matsuda3
1Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.
Abstract:
BRCA1 pathogenic variants are associated with a lower risk of developing prostate cancer than BRCA2, but aggressiveness remains unclear. Therefore, screening criteria are insufficiently established. Here, we reanalyzed the impact of BRCA1 pathogenic variants on aggressiveness using 11 300 prostate cancer patients, adjusting for age and area. The proportion of aggressive prostate cancer was higher in BRCA1 carriers (86.7%) than in noncarriers (61.1%) (odds ratio = 4.87; 95% confidence interval = 1.05 to 22.60). The proportion of high prostate-specific antigen levels was higher in BRCA1 carriers (66.7%) than in noncarriers (27.9%) (P = 7.61 × 10-3). BRCA1 carriers had a worse tendency than noncarriers for T classification (T3-4: BRCA1, 36.4%; noncarriers, 23.2%) and Gleason score (GS8-10: BRCA1, 53.3%; noncarriers, 31.0%). Moreover, we observed the first case of BRCA1-related aggressive prostate cancer showing long-term survival through early detection and multidisciplinary treatment. These results suggest that recommendations for early prostate cancer screening might need to be reconsidered for BRCA1 carriers.
More Related Videos
08:15gDNA Enrichment by a Transposase-based Technology for NGS Analysis of the Whole Sequence of BRCA1, BRCA2, and 9 Genes Involved in DNA Damage Repair
Published on: October 6, 2014
09:22Functional Assessment of BRCA1 variants using CRISPR-Mediated Base Editors
Published on: February 28, 2021
Related Concept Videos
Tumor Progression
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...
Cancer-Critical Genes I: Proto-oncogenes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Cancer Prevention
Some...
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Mutagenicity and Carcinogenicity
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...