Genetic Alterations in Benign Breast Biopsies of Subsequent Breast Cancer Patients

Fibrocystic changes are associated with an increased risk of breast cancer (approximately 1.5-2 times that of the general population). Although the relative risk seems low, because of the high frequency of such changes, the absolute risk is significant. Genetic alterations have been found in fibrocystic changes with or without epithelial changes, suggesting that critical oncogenic events are occurring at an early stage. We investigated a unique collective of 17 breast cancer patients who, prior to the diagnosis of invasive breast cancer, underwent open surgical biopsy showing fibrocystic changes of the breast. Massive parallel sequencing targeting genes frequently mutated in breast cancer was performed on the fibrocystic breast tissue as well as the ensuing cancer tissue.

Type: Other
Archiver: EGA European Genome-Phenome Archive

2 Datasets 1 Publication

Click on a Dataset ID in the table below to learn more, and to find out who to contact about access to these data

Dataset ID	Description	Technology	Samples
EGAD00001004874	This dataset consists of amplicon sequencing of fibrocystic breast tissues, subsequent cancer tissue and germline control of 17 patients. The target genes include all exons of 27 protein-coding genes and 2 non-coding genes, as well as mutation hotspots in three cancer genes, frequently mutated in breast cancer. Ion AmpliSeq libraries were generated and sequenced on the Ion S5 XL system.	Ion Torrent S5 XL	51
EGAD00001006356	RNA-seq of Bone Metastasis from breast and prostate cancer (4 breast and 5 prostate samples). Dataset contains BAM files from RNA-seq performed using Illumina HiSeq 2500.	Illumina HiSeq 2500 Illumina NovaSeq 6000 Ion Torrent S5 XL	288

Publications	Citations
Genetic Alterations in Benign Breast Biopsies of Subsequent Breast Cancer Patients. Soysal SD, Ng CKY, Costa L, Weber WP, Paradiso V, Piscuoglio S, Muenst S. Front Med (Lausanne) 6: 2019 166	5