Chunyan Gu-Trantien [15] evaluated the association of Tfh cells with disease-free survival (DFS) in systemically untreated primary breast cancer (BC) and found that Tfh cells were a consistently prognostic marker and had a linear association with survival in the entire BC population as well as in the 2 main BC subtypes (HER2+ and ER+/HER2-). The gene discussed is ERBB2; the disease is breast cancer.