Table 2 Estimates of the effect of indoleamine 2,3-dioxygenase 1 (IDO1) and kynurenine--oxoglutarate transaminase 3 (KAT3) proteins on type 2 diabetes (T2DM) using Mendelian Randomization with different methods.

From: Indoleamine 2,3-dioxygenase and ischemic heart disease: a Mendelian Randomization study

Outcome

Exposure

(SD)

SNPs

Method

OR

95%CI

P value

Cochran’s Q statistic (p-value)

MR-Egger

Intercept p value

I2

T2DM

IDO1

3a

IVW

0.91

0.85, 0.97

0.003

0.86 (0.65)

0.64

90.7%

MR-Egger

0.87

0.70, 1.07

0.18

WM

0.91

0.85, 0.97

0.01

8

IVW

0.92

0.87, 0.97

0.002

2.75 (0.91)

0.31

91.8%

MR-Egger

0.87

0.76, 0.98

0.03

WM

0.92

0.86, 0.98

0.01

MR-PRESSO

0.92

0.89, 0.95

<0.001

KAT3

2b

IVW

0.87

0.78, 0.96

0.01

1.11 (0.29)

  

15

IVW

1.00

0.95, 1.05

0.97

13.42 (0.49)

0.46

22.9%

MR-Egger

0.97

0.88, 1.07

0.51

WM

1.03

0.96, 1.10

0.40

MR-PRESSO

1.00

0.95, 1.05

0.98

  1. aNot enough instrumental variables for MR-PRESSO. bNot enough instrumental variables for MR-Egger, WM and MR-PRESSO.