label: Prognostic Stage IV Breast Cancer AJCC v8
label_lc: prognostic stage iv breast cancer ajcc v8
description: Stage IV includes: Any T, Any N, M1, G1-3, HER2 Status: Any, ER Status: Any, PR Status: Any. G1: Low combined histologic grade (favorable); SBR score of 3-5 points. G2: Intermediate combined histologic grade (moderately favorable); SBR score: 6-7 points. G3: High combined histologic grade (unfavorable); SBR score of 8-9 points. M1: Distant metastases detected by clinical and radiographic means and/or histologically proven metastases larger than 0.2 mm. (AJCC 8th ed.)