Table 2 Summary of clinical trials of main targeted agents

From: Advances in targeted therapy for esophageal cancer

Agent

Targets

Results

Cancer type

References

Cetuximab

EGFR

mPFS (Placebo vs. Cetuximab): 2.0 months vs. 2.9 months mOS (Placebo vs. Cetuximab): 3.0 months vs. 5.1 months

EAC

13

Nimotuzumab

EGFR

mPFS: 13.9 months mOS: 9 months

ESCC

18

Gefitinib

EGFR

mPFS: 2.2 months mOS: 6.1 months

ESCC

22

Icotinib

EGFR

mPFS: 1.7 months mOS: 3.73 months

ESCC

26

Trastuzumab

HER2

mPFS: 7.8 months mOS: 16 months

EAC

33

Lapatinib

HER3

PFS: 6.0 months OS: 12.2 months

ESCC

38

Bevacizumab

VEGF/VEGFR

3-year overall survival (chemotherapy alone group vs. bevacizumab group): 48.1% vs. 50.3%

EAC

46

Ramucirumab

VEGF/VEGFR

mPFS: 5.1 months mOS: 5.2 months

GEJ

50

Endostar and Chemotherapy

VEGF/VEGFR

PFS > 8 months

ESCC

55

Sunitinib

VEGF/VEGFR

mPFS (Sunitinib+FOLFIRI vs. Sunitinib+Placebo): 3.5 months vs. 3.3 months

GEJ

57

Sorafenib

VEGF/VEGFR

mPFS: 5.8 months mOS: 13.6 months

GEJ

58

Apatinib

VEGF/VEGFR

PFS: 3.8 months OS: 6.96 months

ESCC

60

Anlotinib

VEGF/VEGFR

mPFS (Placebo vs. Anlotinib):1.4 months vs. 3.0 months Disease control rates (DCR): 38.1%

ESCC

63

Pembrolizumab

PD-1/PD-L1

mOS: 5.8 months Overall remission rate (ORR): 14.3% vs. 5.2%

ESCC/EAC

100

Camrelizumab

PD-1/PD-L1

PFS: 2.0 months OS: 8.0 months

ESCC

116

Ipilimumab and Nivolumab

PD-1/PD-L1

mOS (Ipilimumab&Nivolumab vs. Nivolumab): 6.9 months vs. 5.0 months

EC

89