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Burgess, Stephen; Malik, Rainer; Liu, Bowen; Mason, Amy M.; Georgakis, Marios K.; Dichgans, Martin ORCID logoORCID: https://orcid.org/0000-0002-0654-387X and Gill, Dipender (2021): Dose-response relationship between genetically proxied average blood glucose levels and incident coronary heart disease in individuals without diabetes mellitus. In: Diabetologia, Vol. 64, No. 4: pp. 845-849 [PDF, 805kB]


Aims/hypothesis Our aim was to investigate the relationship between average blood glucose levels and incident CHD in individuals without diabetes mellitus. Methods To investigate average blood glucose levels, we studied HbA(1c) as predicted by 40 variants previously shown to be associated with both type 2 diabetes and HbA(1c). Linear and non-linear Mendelian randomisation analyses were performed to investigate associations with incident CHD risk in 324,830 European ancestry individuals from the UK Biobank without diabetes mellitus. Results Every one mmol/mol increase in genetically proxied HbA(1c) was associated with an 11% higher CHD risk (HR 1.11, 95% CI 1.05, 1.18). The dose-response curve increased at all levels of HbA(1c), and there was no evidence favouring a non-linear relationship over a linear one. Conclusions/interpretations In individuals without diabetes mellitus, lowering average blood glucose levels may reduce CHD risk in a dose-dependent way.

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