Table 2.

Clinical characteristics according to the classes

NMF class
P
IIIIII
n453031
Grade 324 (59%)11 (41%)12 (46%)0.31
ER+14 (31%)22 (73%)24 (77%)<0.001
Her2+1 (2%)1 (3%)9 (29%)<0.001
Triple negative28 (64%)5 (17%)2 (6%)<0.001
Molecular class (gene expression array)
    Luminal B (n = 14)4 (29%)1 (7%)9 (64%)0.01
    Luminal A (n = 32)9 (28%)17 (53%)6 (19%)<0.001
    Basal-like (n = 26)20 (77%)4 (15%)2 (8%)<0.001
    Her2 (n = 15)3 (20%)2 (13%)10 (67%)0.004
  • NOTE: Molecular subtypes were assigned to each sample according to a classifier derived from Hu et al. (19).