Sex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysis

Abstract Parkinson’s disease (PD) is more prevalent in men than women, and presents with different clinical features in each sex. Despite widespread recognition of these differences, females are under-represented in clinical and experimental studies of PD, and much remains to be elucidated regarding...

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Main Authors: Samantha L. Schaffner, Kira N. Tosefsky, Amy M. Inskter, Silke Appel-Cresswell, Julia M. Schulze-Hentrich
Format: Article
Language:English
Published: BMC 2025-02-01
Series:Biology of Sex Differences
Subjects:
Online Access:https://doi.org/10.1186/s13293-025-00692-w
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author Samantha L. Schaffner
Kira N. Tosefsky
Amy M. Inskter
Silke Appel-Cresswell
Julia M. Schulze-Hentrich
author_facet Samantha L. Schaffner
Kira N. Tosefsky
Amy M. Inskter
Silke Appel-Cresswell
Julia M. Schulze-Hentrich
author_sort Samantha L. Schaffner
collection DOAJ
description Abstract Parkinson’s disease (PD) is more prevalent in men than women, and presents with different clinical features in each sex. Despite widespread recognition of these differences, females are under-represented in clinical and experimental studies of PD, and much remains to be elucidated regarding the biological underpinnings of sex differences in PD. In this review, we summarize known contributors to sex differences in PD etiology across the life course, with a focus on neurological development and gene regulation. Sex differences that are established at conception and heightened during adolescence and midlife may partially embed future PD risk, due to the complex interactions between gonadal hormones, gene regulation, lifestyle factors, and aging. While the neuroprotective properties of estrogen are strongly implicated in reduced prevalence of PD in women, interactions with genotype and gender-biased lifestyle factors are incompletely understood. Consideration of sex and gender-related factors in study design, data analysis, and interpretation have the power to expedite our knowledge of the etiology of PD in men and in women, and to inform prevention and therapeutic strategies tailored to each sex.
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series Biology of Sex Differences
spelling doaj-art-76f16cdc7468434a9f3973fb7b4123f92025-02-09T12:04:56ZengBMCBiology of Sex Differences2042-64102025-02-0116111110.1186/s13293-025-00692-wSex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysisSamantha L. Schaffner0Kira N. Tosefsky1Amy M. Inskter2Silke Appel-Cresswell3Julia M. Schulze-Hentrich4Pacific Parkinson’s Research Centre, Djavad Mowafaghian Centre for Brain Health, University of British ColumbiaPacific Parkinson’s Research Centre, Djavad Mowafaghian Centre for Brain Health, University of British ColumbiaBC Children’s Hospital Research InstitutePacific Parkinson’s Research Centre, Djavad Mowafaghian Centre for Brain Health, University of British ColumbiaDepartment of Genetics/Epigenetics, Faculty NT, Saarland UniversityAbstract Parkinson’s disease (PD) is more prevalent in men than women, and presents with different clinical features in each sex. Despite widespread recognition of these differences, females are under-represented in clinical and experimental studies of PD, and much remains to be elucidated regarding the biological underpinnings of sex differences in PD. In this review, we summarize known contributors to sex differences in PD etiology across the life course, with a focus on neurological development and gene regulation. Sex differences that are established at conception and heightened during adolescence and midlife may partially embed future PD risk, due to the complex interactions between gonadal hormones, gene regulation, lifestyle factors, and aging. While the neuroprotective properties of estrogen are strongly implicated in reduced prevalence of PD in women, interactions with genotype and gender-biased lifestyle factors are incompletely understood. Consideration of sex and gender-related factors in study design, data analysis, and interpretation have the power to expedite our knowledge of the etiology of PD in men and in women, and to inform prevention and therapeutic strategies tailored to each sex.https://doi.org/10.1186/s13293-025-00692-wParkinson’s diseaseGenomicsEpigenomicsTranscriptomicsStudy designData analysis
spellingShingle Samantha L. Schaffner
Kira N. Tosefsky
Amy M. Inskter
Silke Appel-Cresswell
Julia M. Schulze-Hentrich
Sex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysis
Biology of Sex Differences
Parkinson’s disease
Genomics
Epigenomics
Transcriptomics
Study design
Data analysis
title Sex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysis
title_full Sex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysis
title_fullStr Sex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysis
title_full_unstemmed Sex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysis
title_short Sex and gender differences in the molecular etiology of Parkinson’s disease: considerations for study design and data analysis
title_sort sex and gender differences in the molecular etiology of parkinson s disease considerations for study design and data analysis
topic Parkinson’s disease
Genomics
Epigenomics
Transcriptomics
Study design
Data analysis
url https://doi.org/10.1186/s13293-025-00692-w
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