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. 2021 Mar 26;22(1):22.
doi: 10.1186/s12868-021-00623-6.

Sex effects on clinical features in LRRK2 G2385R carriers and non-carriers in Parkinson's disease

Shi-Shuang Cui #  1   2 , Rao Fu #  1 , Juan-Juan Du  1 , Yi-Qi Lin  1 , Pei Huang  1 , Chao Gao  1 , Hai-Yan Zhou  1 , Sheng-Di Chen  3
Affiliations

Sex effects on clinical features in LRRK2 G2385R carriers and non-carriers in Parkinson's disease

Shi-Shuang Cui et al. BMC Neurosci. .

Abstract

Background: Differences of genotypes between male and female have been studied in Parkinson's disease (PD), but limited research has focused on the comparison between sexes with LRRK2 G2385 variant.

Objective: The aim of this study was to explore sex effects in the same genetic subtype and role of leucine-rich repeat kinase 2 (LRRK2) G2385R variants in the same sex in PD.

Methods: 613 PD patients were recruited from the Movement Disorders Clinic in Ruijin Hospital. We did not include healthy controls in this study. The data collected includes demographic information, disease history, scores of motor and non-motor symptoms scales, midbrain transcranial sonography and DNA. Binary logistic regression analysis was performed to evaluate the association between clinical features and sex in LRRK2 G2385R carriers and non-carriers, as well as the association between the clinical features and LRRK2 G2385R variants in male and female sex.

Results: Sex distribution is similar in LRRK2 G2385R carriers and non-carriers. In male sex, LRRK2 G2385R carriers showed lower risk in cognitive impairment compared with non-carriers (OR = 0.301, p = 0.003, 95%CI 0.135-0.668). In female sex, LRRK2 G2385R carriers showed lower risk in autonomic dysfunction compared with non-carrier (OR = 0.401, p = 0.040, 95%CI 0.167-0.960). In LRRK2 G2385R non-carriers, female sex showed lower risk of impairment in activity of daily living (OR = 0.610, p = 0.021, 95%CI 0.400-0.928), excessive daytime sleepiness (OR = 0.555, p = 0.007, 95%CI 0.361-0.853), substantia nigra hyperechogenicity (OR = 0.448, p = 0.019, 95%CI 0.228-0.878), autonomic dysfunction frequency (OR = 0.626, p = 0.016, 95%CI 0.428-0.917) and higher risk in mood disorders (OR = 1.691, p = 0.022, 95%CI 1.078-2.654) compared with male. In LRRK2 G2385R carriers, female sex showed a lower risk of autonomic dysfunction (OR = 0.294, p = 0.024, 95%CI 0.102-0.849) compared with male.

Conclusion: In contrast to male PD patients, a more benign disease course was observed in female in both LRRK2 G2385R carriers and non-carriers. However, sex differences were less notable in PD with LRRK2 G2385R variants.

Keywords: Clinical feature; LRRK2 G2385R; Parkinson’s disease; Sex; Transcranial sonographic.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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