Table 3.

Evaluating the potential bias among in vitro studies.

No.	First Author, Publication Year	Was the Studied Cancer Cell Line(s) Reported?	Was the Duration of Exposure to the Studied miR to Tumoral Cells Reported?	Was the ConCentration of the Studied miR Reported?	Was a Standard Culture Media Used for the Study?	Were Reliable Tools Used to Assess the Outcome?	Were the Experiments Conducted More than Once?	Was More than One Independent Experiment Performed?	The Overall Risk of Bias
1	Narges Dastmalchi, 2021 [30]	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias
2	Katayoun Bahman Soufiani, 2021 [31]	Without bias	Without bias	With bias	Without bias	Without bias	Without bias	Without bias	Low-bias
3	Mina Rasoolnezhad, 2021 [32]	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias
4	Li-Li Wang, 2020 [13]	Without bias	Without bias	With bias	Without bias	Without bias	Without bias	Without bias	Low-bias
5	Fu Peng, 2020 [33]	Without bias	With bias	With bias	Without bias	Without bias	Without bias	Without bias	Low-bias
6	Narges Dastmalchi, 2020 [34]	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias
7	Shirin Azarbarzin, 2021 [35]	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias
8	Lianzhou Yang, 2018 [38]	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias	Without bias
9	Xiaojia Huang, 2017 [6]	Without bias	Without bias	With bias	Without bias	Without bias	Without bias	Without bias	Low-bias