This is in line with previous studies that have found that West African ancestry is associated with more aggressive tumor subtypes and worse survival.5,42,43,44,45 Similar results have been discovered for relative risk of triple negative breast cancer (TNBC) compared with estrogen receptor positive, human epidermal growth factor receptor 2 negative (ERBB2−) disease. This evidence concerns the gene ERBB2 and triple-negative breast carcinoma.