To assess the role of epistasis in Parkinson's disease (PD) susceptibility by identifying interactions between genetic variants, which may explain part of the missing heritability.
Key Findings:
Identified 14 significant candidate variant–variant interactions in the discovery stage, which may contribute to PD risk.
Successfully replicated three epistatic signals near SNCA, MAPT, and WNT3, reinforcing their potential role in PD.
Observed epistatic effects in individuals with both European and Native American ancestry, suggesting broader implications for genetic research in PD.
Interpretation:
The study highlights the importance of epistatic interactions in understanding the genetic basis of Parkinson's disease, suggesting that these interactions may contribute to the missing heritability and warrant further investigation.
Limitations:
The study primarily focused on common variants and may not capture rare variant interactions, which could also play a significant role in PD.
The findings may not be generalizable to all populations due to the focus on specific ancestries, indicating a need for more inclusive research.
Conclusion:
The research identifies novel epistatic signals associated with PD risk, emphasizing their relevance in biological pathways related to the disease and the necessity for further exploration of these interactions.
by Alejandro Cisterna-Garcia, Bernabe I Bustos, Sara Bandres-Ciga, Thiago P Leal, Elif I Sarihan, Christie Jok, Dimitri Krainc, International Parkinson’s Disease Genomics Consortium (IPDGC), Ignacio F Mata, Steven J Lubbe, Juan A Botia
