Background: Luminal B-like human epidermal growth factor receptor 2 negative (Luminal B [HER2−]) is the most common molecular subtype of breast cancer (BC). Since the relationship between Luminal B (HER2−) BC and liver metastasis (LM) is poorly defined, this retrospective study aimed to develop an LM risk nomogram for patients with lymph node-related (N + Luminal B [HER2−]) BC. Methods: Data were obtained for patients initially diagnosed with BC from the Tianjin Medical University Cancer...