Abstract
Associations between HER2DX ERBB2 score and pathologic variables. Distribution of HER2DX ERBB2 score groups (low, medium, and high; A); HER2DX ERBB2 score by tumor grade (B), HR status (C), HER2 IHC status (D), TLS status (E), and spatial immune distribution (F). All scores are shown on a continuous scale from 1 to 99. Boxplots show IQR with medians indicated and display score distributions across groups. Statistical comparisons were performed using appropriate parametric tests.