Fig. 4

Nomogram constructed based on the combined model. Each point that corresponds to each variable is on the uppermost point scale. The sum of all points is referred to as the total points. The point total projected on the bottom scale indicates the probability of a gBRCA mutation in breast cancer patients. BRCA = breast cancer susceptibility gene, ER = estrogen receptor, PR = progesterone receptor, HER2 = human epidermal growth factor receptor 2