Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.

<h4>Background</h4>Despite previous clinical studies providing some evidence of an association between metformin treatment and polycystic ovary syndrome(PCOS), these findings remain controversial. To investigate whether the association reflect causality, a two-sample Mendelian randomizat...

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Main Authors: Liting Lin, Huan Shen, Yanbin Wang
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0321380
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author Liting Lin
Huan Shen
Yanbin Wang
author_facet Liting Lin
Huan Shen
Yanbin Wang
author_sort Liting Lin
collection DOAJ
description <h4>Background</h4>Despite previous clinical studies providing some evidence of an association between metformin treatment and polycystic ovary syndrome(PCOS), these findings remain controversial. To investigate whether the association reflect causality, a two-sample Mendelian randomization (MR) method was conducted.<h4>Methods</h4>Data from genome-wide association studies were analyzed, with the exposure factor being metformin and the outcome variable being PCOS. The inverse variance weighted(IVW) was used as the primary method for MR analysis. In addition, MR-Egger, weighted median, heterogeneity tests, and sensitivity analyses were performed.<h4>Results</h4>The initial and validation MR analyses indicated that genetically predicted metformin treatment had no effects on PCOS. Sensitivity analyses provided additional confirmation of the reliability of the MR results.<h4>Conclusions</h4>Our two-sample MR analysis did not find genetic evidence supporting a significant association between metformin treatment and PCOS.
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spelling doaj-art-f562e6396b0a44a79f17888bcc7f514a2025-08-20T02:16:15ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01204e032138010.1371/journal.pone.0321380Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.Liting LinHuan ShenYanbin Wang<h4>Background</h4>Despite previous clinical studies providing some evidence of an association between metformin treatment and polycystic ovary syndrome(PCOS), these findings remain controversial. To investigate whether the association reflect causality, a two-sample Mendelian randomization (MR) method was conducted.<h4>Methods</h4>Data from genome-wide association studies were analyzed, with the exposure factor being metformin and the outcome variable being PCOS. The inverse variance weighted(IVW) was used as the primary method for MR analysis. In addition, MR-Egger, weighted median, heterogeneity tests, and sensitivity analyses were performed.<h4>Results</h4>The initial and validation MR analyses indicated that genetically predicted metformin treatment had no effects on PCOS. Sensitivity analyses provided additional confirmation of the reliability of the MR results.<h4>Conclusions</h4>Our two-sample MR analysis did not find genetic evidence supporting a significant association between metformin treatment and PCOS.https://doi.org/10.1371/journal.pone.0321380
spellingShingle Liting Lin
Huan Shen
Yanbin Wang
Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.
PLoS ONE
title Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.
title_full Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.
title_fullStr Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.
title_full_unstemmed Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.
title_short Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome.
title_sort mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome
url https://doi.org/10.1371/journal.pone.0321380
work_keys_str_mv AT litinglin mendelianrandomizationstudyshowednocausalitybetweenmetformintreatmentandpolycysticovarysyndrome
AT huanshen mendelianrandomizationstudyshowednocausalitybetweenmetformintreatmentandpolycysticovarysyndrome
AT yanbinwang mendelianrandomizationstudyshowednocausalitybetweenmetformintreatmentandpolycysticovarysyndrome