ERG and cancer: For example, in ERG-negative cancer, strong BCAR1 expression was found in 27.9% of pT2 cancers and increased by 9.3% to 37.2% in tumors ≥ pT3b, while the difference in ERG-positive cancer was only 1.7% between pT2 (51.9%) and ≥ pT3b (50.2%).