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. 2014 Aug;4(2):82-7.
doi: 10.1159/000361054. Epub 2014 Apr 23.

Effect of the FTO rs9930506 Polymorphism on the Main Comorbidities of the Cardiorenal Metabolic Syndrome in an Elderly Spanish Cohort

Eliecer Coto  1 , Beatriz Tavira  2 , Juan Gómez  2 , Salvador Tranche  3 , Carmen Díaz Corte  4
Affiliations

Effect of the FTO rs9930506 Polymorphism on the Main Comorbidities of the Cardiorenal Metabolic Syndrome in an Elderly Spanish Cohort

Eliecer Coto et al. Cardiorenal Med. 2014 Aug.

Abstract

Background/aim: Fat mass and obesity-associated (FTO) gene polymorphisms have been linked to the risk of obesity and diabetes, two well-recognized risk factors for renal disease. Our aim was to determine whether a common FTO polymorphism was associated with a reduced estimated glomerular filtration rate (eGFR) independently of body mass index (BMI) and type 2 diabetes mellitus (T2DM) in a cohort of elderly individuals from the region of Asturias (Northern Spain; RENASTUR cohort).

Methods: A total of 544 Spanish Caucasians aged 55-85 years were genotyped for the FTO rs9930506 single-nucleotide polymorphism (SNP). Individuals with a previous diagnosis of renal disease were not eligible for the study. The eGFR was calculated with the Modification of Diet in Renal Disease formula, and individuals with an eGFR of <60 ml/min/1.73 m(2) (n = 91) were considered as having impaired renal function. The effect of alleles and genotypes on BMI, hypertension, diabetes, eGFR and blood lipid values was statistically determined.

Results: The rs9930506 GG genotype was significantly more common in the group with a BMI of >25 (p = 0.03; odds ratio = 2.43; 95% CI: 1.09-5.43). Age and T2DM were significant risk factors for a reduced eGFR, but neither obesity nor the FTO genotypes were associated with a reduced eGFR.

Conclusion: The common FTO rs9930506 polymorphism was a risk factor for overweight and obesity in the RENASTUR cohort. However, this SNP was not associated with other comorbidities of the cardiorenal metabolic syndrome in this population.

Keywords: Body mass index; FTO polymorphisms; Glomerular filtration; Obesity; Renal function.

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