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Table 5 Best response in patients by EGFR mutations

From: Clinical efficacy of osimertinib in EGFR-mutant non-small cell lung cancer with distant metastasis

 

Gefitinib/Erlotinib

Afatinib

Osimertinib

Exon 19 del

n (%)

L858R

n (%)

Exon 19 del

n (%)

L858R

n (%)

Exon 19 del

n (%)

L858R

n (%)

Totala

69

100

42

10

63

71

Best Response

 CR

11 (15.9)

6 (6.0)

3 (7.1)

2 (20.0)

3 (4.8)

2 (2.8)

 PR

35 (50.7)

64 (64.0)

21 (50.0)

5 (50.0)

45 (71.4)

49 (69.0)

 SD

16 (23.2)

22 (22.0)

14 (33.3)

1 (10.0)

9 (14.3)

17 (24.20)

 PD

7 (10.1)

8 (8.0)

4 (9.5)

2 (20.0)

6 (9.5)

3 (4.2)

ORR

46 (66.7)

70 (70.0)

24 (57.1)

7 (70.0)

48 (76.2)

51 (71.8)

DCR

62 (89.9)

92 (92.0)

38 (90.5)

8 (80.0)

57 (90.5)

68 (95.8)

  1. CR complete response, PR partial response, SD stable disease, PD progressive disease, ORR objective response rate, DCR disease control rate, exon 19 del exon 19 deletion
  2. aThere were 13 patients in the gefitinib/erlotinib group, 3 cases in the afatinib group, and 16 cases in the osimertinib group could not be evaluated