Table 3 Uni- and multi-variable analysis for overall survival

From: HER2DX ERBB2 mRNA score in first-line advanced HER2-positive breast cancer treated with chemotherapy, trastuzumab, and pertuzumab

Variable

Univariable

Multivariable

HR

95% CI

p-Value

HR

95% CI

p-Value

HER2DX ERBB2 score high vs low/med

0.26

0.13–0.49

<0.001

0.40

0.17–0.85

0.018

HER2 IHC 3+ vs others

0.24

0.12–0.44

<0.001

0.47

0.21–1.07

0.072

Hormone receptor status (HR+ vs HR−)

1.28

0.67–2.45

0.46

NA

NA

NA

De novo metastasis vs relapsed

0.86

0.46–1.60

0.626

NA

NA

NA

Bone only disease

0.52

0.19–1.47

0.217

NA

NA

NA

Visceral metastasis

2.50

1.05–5.95

0.039

1.50

0.58–3.88

0.410

Brain metastasis

2.40

1.18–5.05

0.016

2.40

1.08–5.35

0.032

Metastatic sites ≥3 vs <3

2.80

1.50–5.24

0.001

1.60

0.74–3.29

0.244