Other genes with moderate, low, or uncertain penetrance that have been implicated in breast cancer [29, 50–52, 54–56], RECQL, RAD51B, ERCC3, MRE11A, RAD51D, BARD1, and NBN, had a yield of 0.3% (n = 7), 0.3% (n = 7), 0.3% (n = 6), 0.3% (n = 6), 0.2% (n = 4), 0.2% (n = 4), and 0.1% (n = 3), respectively. This evidence concerns the gene NBN and breast cancer.