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Table 3 The details of pooled 6-month PFS rate and 12-month OS rate

From: Efficacy and safety of immune checkpoint inhibitors in Proficient Mismatch Repair (pMMR)/ Non-Microsatellite Instability-High (non-MSI-H) metastatic colorectal cancer: a study based on 39 cohorts incorporating 1723 patients

 

Subgroups

Pooled rate (95% CI), %

No. of cohorts

I2 (95% CI), %

P for I2

Model

Egger's Test

6-month PFS rate

ICIs based-therapy

32.8 (23.5–42.7)

20

79.4 (68.8- 86.4)

 < 0.01

Random effect

z = -0.1, p-value = 0.95

anti-PD-(L)1 + chemotherapy

23.1 (9.6–39.7)

2

0.0

0.99

Fixed effect

/

anti-PD-(L)1 + TKIs

29.3 (17.0–43.2)

10

80.5 (65.1- 89.1)

 < 0.01

Random effect

z = -1.1, p-value = 0.28

anti-PD-(L)1 + anti-VEGF + chemotherapy

55.2 (24.8–83.8)

3

80.7 (39.4- 93.8)

 < 0.01

Random effect

z = 0.5, p-value = 0.60

anti-PD-(L)1 + anti-EGFR + chemotherapy

39.1 (19.3–60.7)

2

0.0

0.94

Fixed effect

/

First-line

71.5 (53.5–86.8)

2

0.0

0.37

Fixed effect

/

Second-line or beyond

30.4 (21.5–40.0)

17

77.0 (63.5–85.5)

 < 0.01

Random effect

z = -0.5, p-value = 0.62

12-month OS rate

ICIs based-therapy

52.3 (46.4–58.1)

12

36.0 (0.0- 67.7)

0.10

Fixed effect

z = -0.1, p-value = 0.89

anti-PD-(L)1 + TKIs

52.1 (42.9–61.3)

5

0.0 (0.0- 76.2)

0.48

Fixed effect

z = 0.3, p-value = 0.80

anti-PD-(L)1 + anti-VEGF + chemotherapy

71.4 (50.0–89.1)

1

/

/

/

/

anti-PD-(L)1 + anti-EGFR + chemotherapy

47.8 (26.9–69.1)

2

0.0

0.86

Fixed effect

/

First-line

71.4 (50.0–89.1)

1

/

/

/

/

Second-line or beyond

51.2 (45.1–57.3)

10

33.0 (0.0–68.1)

0.14

Fixed effect

z = 0.0, p-value = 1.00

  1. Abbreviations: PFS progression-free survival, OS overall survival, CI confidence interval, PD-(L)1 Programmed cell death-(Ligand) 1, CTLA-4 cytotoxic T lymphocyte-associated antigen-4, VEGF vascular endothelial growth factor, EGFR epidermal growth factor receptor, TKIs tyrosine kinase inhibitors