Concussion-Associated Polygenic Profiles of Elite Male Rugby Athletes
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Author
Antrobus, Mark R.
Brazier, Jon
Callus, Peter C.
Herbert, Adam J.
Stebbings, Georgina K.
Khanal, Praval
Day, Stephen H.
Kilduff, Liam P.
Bennett, Mark A.
Erskine, Robert M.
Raleigh, Stuart M.
Collins, Malcolm
Pitsiladis, Yannis P.
Heffernan, Shane M.
Williams, Alun G.
Attention
2299/25516
Abstract
Due to the high-velocity collision-based nature of elite rugby league and union, the risk of sustaining a concussion is high. Occurrence of and outcomes following a concussion are probably affected by the interaction of multiple genes in a polygenic manner. This study investigated whether suspected concussion-associated polygenic profiles of elite rugby athletes differed from non-athletes and between rugby union forwards and backs. We hypothesised that a total genotype score (TGS) using eight concussion-associated polymorphisms would be higher in elite rugby athletes than non-athletes, indicating selection for protection against incurring or suffering prolonged effects of, concussion in the relatively high-risk environment of competitive rugby. In addition, multifactor dimensionality reduction was used to identify genetic interactions. Contrary to our hypothesis, TGS did not differ between elite rugby athletes and non-athletes (p ≥ 0.065), nor between rugby union forwards and backs (p = 0.668). Accordingly, the TGS could not discriminate between elite rugby athletes and non-athletes (AUC ~0.5), suggesting that, for the eight polymorphisms investigated, elite rugby athletes do not have a more ‘preferable’ concussion-associated polygenic profile than non-athletes. However, the COMT (rs4680) and MAPT (rs10445337) GC allele combination was more common in rugby athletes (31.7%; p < 0.001) and rugby union athletes (31.8%; p < 0.001) than non-athletes (24.5%). Our results thus suggest a genetic interaction between COMT (rs4680) and MAPT (rs10445337) assists rugby athletes in achieving elite status. These findings need exploration vis-à-vis sport-related concussion injury data and could have implications for the management of inter-individual differences in concussion risk.
Publication date
2022-05-04Published in
GenesPublished version
https://doi.org/10.3390/genes13050820Other links
http://hdl.handle.net/2299/25516Metadata
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