Table 1 Main characteristics of studies included to meta-analysis.

From: Rethinking Alzheimer’s: novel miRNAs illuminate a disease beyond the brain

Study

Sample size (AD + CN)

miRNAs analyzed

Source

Expression analysis

Data

Batabyal 2023

18 + 14

2578

Serum

microArray

DE results

Čarná 2023

9 + 11

2578

Plasma

microArray

DE results

Denk 2018

47 + 38

87

Serum

RT-qPCR

Raw expression

Dong 2015

127 + 123 (48 + 48 used)

16

Serum

RT-qPCR

DE results

Dong 2021

8 + 8

1957

Blood

RNAseq

Raw expression

Fitz 2021

23 + 16

357

Plasma

RNAseq

DE results

Keller 2016 set 1

54 + 22

551

Blood

RNAseq

DE results

Keller 2016 set 2

49 + 55

494

Blood

RNAseq

DE results

Kumar 2017

10 + 14

68

Serum

RT-qPCR

DE results

Leidinger 2013

106 + 22 (48 AD used)

366

Blood

RNAseq

Raw expression

Lu 2021

1021 + 288

2562

Serum

microArray

DE results

Ludwig 2019

145 + 214

21

Blood

RT-qPCR

Raw expression

Lugli 2015

35 + 35

463

Plasma

RNAseq

Raw expression

Palade 2024

33 + 71

299

Plasma

RNAseq

DE results

Nie 2020

5 + 20

100

Plasma

RNAseq

Raw expression

Shigemizu 2019

1021 + 288

2562

Serum

microArray

Raw expression

Visconte 2023

11 + 20

255

Plasma

microArray

DE results

Wang 2022

47 + 62

1957

Plasma

RNAseq

DE results

Wen 2024

28 + 21

786

Serum

RNAseq

Raw expression

Wu 2020 set 1

40 + 31

72

Plasma

RNAseq

DE results

Wu 2020 set 2

48 + 22

191

Plasma

RNAseq

DE results

Zhai 2024

6 + 6

2263

Plasma

microArray

DE results