The grape-like morphology of breast cancer cell types is mostly associated with Luminal B breast cancer, but AU565, which is an example of triple-negative breast cancer, ZR-75-1, associated with Luminal A, and SK-BR-3, which is an example of HER2+, have also been classified as exhibiting a grape-like morphology. Here, ERBB2 is linked to triple-negative breast carcinoma.