Small ~10 kb microhomology-mediated tandem duplications (“Group 1 TDs”) are abundant in BRCA1-linked but not BRCA2-linked breast cancer genomes. Here, we define the mechanism underlying this rearrangement signature. We show that BRCA1, but not BRCA2, suppresses TDs at a Tus/Ter site-specific chromos...
ORGANISM(S): Mus musculus