Table 1 Clinico-pathological characteristics of the 1770 patients.

From: Predicting Radiation Resistance in Breast Cancer with Expression Status of Phosphorylated S6K1

  

RTb (+) (n = 1317)

RT (−) (n = 453)

p*

Age at diagnosisa

<50

701 (53.2%)

177 (39.1%)

<0.001

≥50

616 (46.8%)

276 (60.9%)

 

ER

Negative

420 (32.3%)

170 (37.9%)

0.032

Positive

882 (67.7%)

278 (62.1%)

 

PR

Negative

575 (44.2%)

245 (54.7%)

<0.001

Positive

726 (55.8%)

203 (45.3%)

 

HER2

Negative

966 (76.3%)

279 (64.6%)

<0.001

Positive

300 (23.7%)

153 (35.4%)

 

p-S6K1

Negative

319 (24.2%)

128 (28.3%)

0.091

Positive

998 (75.8%)

325 (71.7%)

 

Mass size

<2 cm

779 (59.1%)

258 (57.0%)

0.439

≥2 cm

538 (40.9%)

195 (43.0%)

 

Node status

Negative

792 (60.5%)

243 (54.0%)

0.017

Positive

518 (39.5%)

207 (46.0%)

 

Histology

IDC

1134 (86.1%)

395 (87.2%)

0.830

ILC

59 (4.5%)

19 (4.2%)

 

Others

124 (9.4%)

39 (8.6%)

 

Histologic grade

G1,2

777 (65.8%)

264 (65.2%)

0.427

G3

403 (34.2%)

141(34.8%)

 

Surgery

Breast conserving

1044(79.3%)

26(5.7%)

<0.001

Total mastectomy

273(20.7%)

427(94.3%)

 

Loco-regional recurrence

Negative

1279 (97.1%)

432 (95.4%)

0.094

Positive

38 (2.9%)

21 (4.6%)

 

Biologic subtype

Luminal A

746 (59.5%)

206 (48.6%)

<0.001

Luminal B

168 (13.4%)

73 (17.1%)

 

HER2

130 (10.4%)

79 (18.5%)

 

Triple negative

209 (16.7%)

69 (16.2%)

 
  1. aFrequency (%).
  2. bRadiotherapy.
  3. *Pearson’s chi-square test and Fisher’s exact test.