Table 1 Clinicopathological characteristics of patients and samples according to the molecular subtype.

From: The therapeutic response of ER+/HER2− breast cancers differs according to the molecular Basal or Luminal subtype

Characteristics

N

ER+ Luminal

ER+ Basal

p valuea

N

ER− Basal

p valueb

Patients’ age

   

0.296

  

7.89E−26

 ≤50 years

1335

1115 (33%)

220 (31%)

 

632

632 (49%)

 

 >50 years

2795

2296 (67%)

499 (69%)

 

666

666 (51%)

 

Pathological type

   

0.561

  

3.48E−16

 Ductal

2241

1825 (74%)

416 (76%)

 

710

710 (85%)

 

 Lobular

394

324 (13%)

70 (13%)

 

21

21 (3%)

 

 Other

380

318 (13%)

62 (11%)

 

103

103 (12%)

 

Pathological grade

   

7.91E−22

  

1.86E−251

 1

637

562 (18%)

75 (11%)

 

15

15 (1%)

 

 2

1941

1660 (54%)

281 (42%)

 

160

160 (14%)

 

 3

1137

829 (27%)

308 (46%)

 

997

997 (85%)

 

Pathological tumor size (pT)

   

3.25E−03

  

3.38E−10

 pT1

1431

1207 (42%)

224 (38%)

 

288

288 (31%)

 

 pT2

1681

1398 (49%)

283 (49%)

 

542

542 (57%)

 

 pT3

324

248 (9%)

76 (13%)

 

114

114 (12%)

 

Pathological axillary lymph node status (pN)

   

0.275

  

0.38

 Negative

2168

1791 (58%)

377 (55%)

 

596

596 (59%)

 

 Positive

1626

1320 (42%)

306 (45%)

 

422

422 (41%)

 

TP53 mutation status

   

2.77E−12

  

6.02E−42

 Wild-type

1559

1323 (95%)

236 (84%)

 

255

255 (71%)

 

 Mutated

108

63 (5%)

45 (16%)

 

103

103 (29%)

 

Mammaprint relapse risk

   

3.94E−56

  

1.99E−231

 Low

1879

1757 (40%)

122 (13%)

 

13

13 (1%)

 

 High

3393

2584 (60%)

809 (87%)

 

1647

1647 (99%)

 

Recurrent score relapse risk

   

2.43E−121

  

<2.00E−255

 Low

2110

1968 (45%)

142 (15%)

 

19

19 (1%)

 

 Intermediate

1575

1357 (31%)

218 (23%)

 

1555

86 (5%)

 

 High

1587

1016 (23%)

571 (61%)

 

86

1555 (94%)

 

EndoPredict relapse risk

   

3.15E−73

  

<2.00E−255

 Low

2729

2498 (58%)

231 (25%)

 

19

19 (1%)

 

 High

2543

1843 (42%)

700 (75%)

 

1641

1641 (99%)

 

Pathological complete response (pCR)

   

3.72E−08

  

1.08E−15

 No

468

410 (91%)

58 (68%)

 

271

271 (69%)

 

 Yes

69

42 (9%)

27 (32%)

 

123

123 (31%)

 

Adjuvant HT

   

0.369

  

3.25E−83

 No

1375

1134 (47%)

241 (49%)

 

655

655 (87%)

 

 Yes

1542

1292 (53%)

250 (51%)

 

101

101 (13%)

 

Adjuvant CT

   

0.129

  

1.96E−45

 No

3097

2598 (87%)

499 (84%)

 

756

756 (67%)

 

 Yes

496

402 (13%)

94 (16%)

 

367

367 (33%)

 

5-year DRFI, % (95% CI)

2008

79% (77−82)

81% (77−86)

0.24

630

62% (58−67)

1.11E−15

DRFI event, yes

2008

362 (22%)

63 (18%)

0.168

630

201 (32%)

1.60E−07

  1. HT hormone therapy, CT chemotherapy.
  2. ap value for the comparison ER+ Basal versus ER+ Luminal.
  3. bp value for the comparison between ER+ Basal, ER+ Luminal, and ER− Basal.