Association between IHC marker scores and individual DCIS lesions classified based on molecular subtypes of adjacent IDC and TDLU from patients with IDC and DCIS (n = 36).

aDCIS lesions from each case were first classified into two subgroups based on the molecular subtypes of adjacent IDC: Subgroup I DCIS, which presented different molecular subtypes from the adjacent IDC; Subgroup II DCIS, which presented the same molecular subtypes as the adjacent IDC. Then the Subgroup II DCIS lesions were further divided into Subgroups IIa and IIb based on the molecular subtypes of adjacent TDLU.
bReference category.
cP-value (Fisher's exact test).