Table 4 Multivaried Cox regression analysis of the relationship between survival and DNA replication gene expression by taking into account age, sex, treatment (in three categories: none/chemotherapy/chemotherapy and radiotherapy), T classification (two categories: T0 or T1/T2 or T3), KI67 and PCNA clinical markers

From: DNA replication stress response involving PLK1, CDC6, POLQ, RAD51 and CLASPIN upregulation prognoses the outcome of early/mid-stage non-small cell lung cancer patients

T/N (terciles)

Overall survival

Disease-free survival

Relapse-free survival

 

HR

(95% CI)

P-value

HR

(95% CI)

P-value

HR

(95% CI)

P-value

POLQ

 0.70–3.34 (ref)

1.00

  

1.00

  

1.00

  

 3.36–6.31

4.59

(0.56–37.69)

0.16

1.07

(0.35–3.29)

0.90

0.93

(0.27–3.15)

0.90

 6.42–86.70

36.31

(2.55–517.38)

0.008

1.57

(0.40–6.18)

0.51

0.94

(0.20–4.41)

0.94

PLK1

 0.68–6.28 (ref)

1.00

  

1.00

  

1.00

  

 6.31–14.12

4.43

(0.50–39.56)

0.18

3.10

(0.78–12.32)

0.11

3.26

(0.73–14.53)

0.12

 14.13–74.19

23.49

(1.91–288.38)

0.01

11.14

(2.35–52.75)

0.002

11.11

(1.97–62.70)

0.006

RAD51

 0.70–2.40 (ref)

1.00

  

1.00

  

1.00

  

 2.48–4.40

0.72

(0.11–4.74)

0.73

0.98

(0.31–3.13)

0.98

1.08

(0.30–3.98)

0.90

 4.46–19.65

2.94

(0.51–16.84)

0.23

3.44

(1.00–11.83)

0.05

4.00

(0.96–16.68)

0.06

CLASPIN

 0.74–3.27 (ref)

1.00

  

1.00

  

1.00

  

 3.39–6.15

18.44

(1.52–223.05)

0.02

4.68

(1.51–14.55)

0.008

4.23

(1.23–14.56)

0.02

 6.25–31.81

18.50

(1.28–267.42)

0.03

4.93

(1.50–16.17)

0.008

4.73

(1.30–17.25)

0.02

CDC6

 0.75–4.47 (ref)

1.00

  

1.00

  

1.00

  

 4.55–9.62

5.77

(0.97–34.29)

0.05

1.25

(0.44–3.56)

0.67

0.98

(0.30–3.23)

0.97

 10.08–29.65

20.65

(1.54–275.91)

0.02

2.25

(0.46–10.92)

0.31

2.34

(0.38–14.33)

0.36

  1. Abbreviations: CI, confidence interval; HR, hazard ratio.