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Table 6 Objective response rates to second-line treatment in patients with metastatic colorectal cancer

From: Right- and left-sided colorectal cancers respond differently to cetuximab

Response

RSCC

LSCRC

Chemotherapy alone group

Cetuximab group

Chemotherapy alone group

Cetuximab group

Total

44

28

49

68

Best ORR

5 (11.4)

2 (7.1)

5 (10.2)

16 (23.5)

CR

0 (0)

0 (0)

0 (0)

1 (1.4)

PR

5 (11.4)

2 (7.1)

5 (10.2)

15 (22.1)

SD

21 (47.7)

16 (57.2)

23 (46.9)

34 (50.0)

PD

16 (36.4)

10 (35.7)

19 (38.8)

17 (25.0)

NA

2 (4.5)

0 (0)

2 (4.1)

1 (1.5)

P value a

0.698

0.087

  1. a The ORR to the second-line treatment was compared between the chemotherapy and cetuximab plus chemotherapy groups of RSCC and LSCRC patients, respectively.
  2. Other footnotes as in Tables 1 and 3