Table 4 Univariate and multivariate analyses of overall survival progression free survival.

From: PTEN is a predictive biomarker of trastuzumab resistance and prognostic factor in HER2-overexpressing gastroesophageal adenocarcinoma

(A)

 

Progression free survival

Univariate analysis

Multivariate analysis

Median survivala

HR (95% CI)

p valueb

HR (95% CI)

p valueb

Age (> 65 vs. ≤ 65) years

8.4 vs. 9.6

1.05 (0.70–1.56)

0.827

  

Sex (Male vs. Female)

9.3 vs. 8.0

0.97 (0.65–1.44)

0.870

  

BMI (≤ 18.5 vs. > 18.5)

8.4 vs. 8.9

1.16 (0.77–1.72)

0.479

  

Charlson Comorbidity Index (2 ≤ vs. 0 or 1)

10.4 vs. 8.4

0.99 (0.61–1.63)

0.984

  

Lauren classification (diffuse or Mixed vs. intestinal)

8.4 vs. 8.9

0.98 (0.68–1.42)

0.922

  

Macroscopic type (type 4 vs. other)

5.0 vs. 8.9

1.39 (0.78–2.48)

0.263

  

HER2 score (3 + vs. 2 +)

8.7 vs. 8.4

0.85 (0.52–1.38)

0.503

  

Regimen (Platinum drug ( +) vs. Platinum drug (–))

9.5 vs. 5.8

0.68 (0.42–1.10)

0.119

0.72 (0.36–1.46)

0.366

Number of metastatic sites (2 ≤ vs. 0–1)

7.6 vs. 10.3

1.77 (1.22–2.56)

0.003

1.80 (1.23–2.62)

0.002

Previous chemotherapy (yes vs. no)

6.0 vs. 9.3

1.40 (0.87–2.24)

0.165

0.99 (0.50–1.97)

0.983

Previous gastrectomy (yes vs. no)

6.5 vs. 9.8

1.21 (0.82–1.78)

0.339

 

PTEN (loss vs. positive)

6.4 vs. 10.0

1.70 (1.09–2.65)

0.020

1.63 (1.04–2.57)

0.035

(B)

 

Overall survival

Univariate analysis

Multivariate analysis

Median survivala

HR (95% CI)

p valueb

HR (95% CI)

p valueb

Age (> 65 vs. ≤ 65) years

20.6 vs. 17.7

0.96 (0.61–1.51)

0.863

  

Sex (Male vs. Female)

19.6 vs. 16.9

0.98 (0.62–1.56)

0.937

  

BMI (≤ 18.5 vs. > 18.5)

17.7 vs. 20.3

1.24 (0.79–1.94)

0.349

  

Charlson Comorbidity Index (2 ≤ vs. 0 or 1)

21.0 vs. 19.2

1.00 (0.56–1.81)

0.988

  

Lauren classification (diffuse or Mixed vs. intestinal)

16.6 vs. 20.3

1.15 (0.75–1.77)

0.507

  

Macroscopic type (type 4 vs. other)

12.6 vs. 20.1

1.60 (0.80–3.19)

0.185

2.13 (1.04–4.34)

0.038

HER2 score (3 + vs. 2 +)

18.2 vs. 22.6

1.06 (0.59–1.92)

0.839

  

Regimen (Platinum drug ( +) vs. Platinum drug (–))

20.3 vs. 12.0

0.59 (0.35–1.00)

0.049

0.63 (0.37–1.07)

0.089

Number of metastatic sites (2 ≤ vs. 0–1)

13.7 vs. 21.1

1.99 (1.30–3.04)

0.002

2.05 (1.34–3.15)

0.001

Previous chemotherapy (yes vs. no)

14.5 vs. 19.6

1.39 (0.83–2.34)

0.212

  

Previous gastrectomy (yes vs. no)

19.2 vs. 20.6

1.07 (0.69–1.67)

0.752

 

PTEN (loss vs. positive)

13.3 vs. 21.0

1.78 (1.08–2.94)

0.023

1.83 (1.09–3.07)

0.022

  1. HR hazard ratio, 95% CI confidence interval; platinum drug, capecitabine or cisplatin; PTEN phosphatase and tensin homolog, HER2 human epidermal growth factor type 2.
  2. aMonths.
  3. bCox proportional hazard model.