It is worth noting that high mRNA expression of INHBA was significantly associated with worse OS and RFS in positive lymph nodes [OS HR (95%CI) = 1.95 (1.32–2.89), p = 0.0006; RFS HR (95%CI) = 1.51 (1.24–1.84), p = 4.1e-05] as well as in grade 3 of breast cancer patients [OS HR (95%CI) = 1.60 (1.13–2.28), p = 0.0082; RFS HR (95%CI) = 1.41 (1.12–1.77), p = 0.0034]. This evidence concerns the gene INHBA and breast cancer.