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Table 3 Antitumour activity in evaluable patients

From: A phase I/II study of epertinib plus trastuzumab with or without chemotherapy in patients with HER2-positive metastatic breast cancer

Dose of epertinib

Arm A

Arm B

Arm C

 

Epertinib + T

Epertinib + T + V

Epertinib + T + C

 

400mg

600mg

800mg

200mg

400mg

200mg

400mg

600mg

Overall

N=5

N=9

N=7

N=5

N=2

N=4

N=9

N=4

N=45

BOR

 CR

0

0

0

0

0

0

0

0

0

 PR

0

6 (66.7%)

1 (14.3%)

0

2 (100%)

0

5 (55.6%)

2 (50.0%)

16 (35.6%)

 SD ≥ 6 months

2 (40.0%)

0

1 (14.3%)

4 (80.0%)

0

1 (25.0%)

0

1 (25.0%)

9 (20.0%)

 CBR

2 (40.0%)

6 (66.7%)

2 (28.6%)

4 (80.0%)

2 (100%)

1 (25.0%)

5 (55.6%)

3 (75.0%)

25 (55.6%)

 PD

2 (40.0%)

1 (11.1%)

2 (28.6%)

0

0

1 (25.0%)

1 (11.1%)

1 (25.0%)

8 (17.8%)

  1. Clinical benefit is defined as objective response plus SD at 6 months
  2. Abbreviations: T trastuzumab, V vinorelbine, C capecitabine, BOR best overall response, CR complete response, PR partial response, SD stable disease, CBR clinical benefit rate, PD progressive disease