The effect of diabetes and the diabetogenic TBC1D4 p.Arg684ter variant on kidney function in Inuit in Greenland

ABSTRACTThe aim of this study was to examine the effect of diabetes and the diabetogenic TBC1D4 variant on kidney function in Greenland in a population-based setting. Health survey data and TBC1D4 genotypes from 5,336 Greenlanders were used to estimate odds ratios (ORs) of albuminuria (>30 mg/g c...

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Bibliographic Details
Published in:International Journal of Circumpolar Health
Main Authors: Maria Overvad, Lars Jorge Díaz, Peter Bjerregaard, Michael Lynge Pedersen, Christina Viskum Lytken Larsen, Niels Grarup, Torben Hansen, Peter Rossing, Marit Eika Jørgensen
Format: Article in Journal/Newspaper
Language:English
Published: Taylor & Francis Group 2023
Subjects:
Greenland
diabetes
genetics
complications
CKD
Arctic medicine. Tropical medicine
RC955-962
Arctic
Circumpolar Health
greenlander*
International Journal of Circumpolar Health
inuit
Online Access:https://doi.org/10.1080/22423982.2023.2191406
https://doaj.org/article/048e01fd2a8e4d69abdb236291a70afb
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Summary:ABSTRACTThe aim of this study was to examine the effect of diabetes and the diabetogenic TBC1D4 variant on kidney function in Greenland in a population-based setting. Health survey data and TBC1D4 genotypes from 5,336 Greenlanders were used to estimate odds ratios (ORs) of albuminuria (>30 mg/g creatinine) and chronic kidney disease (CKD, eGFR <60 ml/min/1.73m2), comparing individuals with and without diabetes, including the effect of TBC1D4 variant. Of the 3,909 participants with complete data, 9.3% had diabetes. Albuminuria was found in 27.6% and 9.5% and CKD was found in 10.8% and 6.3% among those with and without diabetes, respectively. Diabetes was cross-sectionally associated with an increased risk of albuminuria (OR (95% CI) = 2.37 (1.69,3.33); p < 0.001) and the TBC1D4 variant protected against albuminuria (OR (95% CI) = 0.44 (0.22,0.90); p = 0.02) in a multivariable model. Neither diabetes nor the TBC1D4 variant significantly associated with CKD. The presence/absence of diabetes did not predict changes in eGFR and UACR in longitudinal analyses. Diabetes conferred an increased risk of albuminuria, and the TBC1D4 variant was associated with a decreased risk of albuminuria, but neither was associated with CKD. The potential renoprotective association of the TBC1D4 variant on albuminuria calls for further studies.

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