Genotyping BRCA1 and BRCA2 in genomically unstable glandular tissue from breast cancer patients.

ABSTRACT: Somatic mosaicism for DNA copy number alterations (SMC-CNA) is defined as gain or loss of chromosomal segments in mitotic cells within a single organism. As cells harboring SMC-CNA have the potential to undergo clonal expansion, SMC-CNA may be present in a substantial portion of cells in differentiated human tissues and may contribute to the predisposition of these cells to genetic disease including cancer. We characterized gross genomic alterations (>500 kbp) in uninvolved glandular tissue from 59 breast cancer patients and matched samples of primary tumors and lymph node metastases. Array based comparative genomic hybridization experiments showed 10% (6/59) of patients harbored 1 - 359 large SMC-CNA (mean: 1328 kbp; median: 961 kbp) in uninvolved glandular tissue. SMC-CNA were partially

INSTRUMENT(S): Illumina MiSeq

ORGANISM(S): Homo sapiens

SUBMITTER: Arkadiusz Piotrowski 

PROVIDER: E-MTAB-3111 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress