Ahmad Al-Serri1, Suzanne A Al-Bustan2, Maisa Kamkar3, Daisy Thomas3, Osama Alsmadi4, Rabeah Al-Temaimi1, Olusegun A Mojiminiyi5, Nabila A Abdella6. 1. Human Genetics Unit, Department of Pathology, Faculty of Medicine, Kuwait University, Safat, Kuwait. 2. Department of Biological Sciences, Faculty of Science, Kuwait University, Safat, Kuwait. 3. Genetics and Genomics Unit, Research Division, Dasman Diabetes Institute, Safat, Kuwait. 4. King Hussein Cancer Center, Amman, Jordan. 5. Department of Pathology, Faculty of Medicine, Kuwait University, Safat, Kuwait. 6. Department of Medicine, Faculty of Medicine, Kuwait University, Safat, Kuwait.
Abstract
OBJECTIVE: To investigate the effect of the common fat mass and obesity-associated (FTO) gene polymorphism rs9939609 on body mass index (BMI) in one of the most obese populations worldwide. SUBJECTS AND METHODS: Genotypic data for FTO rs9939609 were available for 1,034 unrelated Kuwaiti adults obtained from Kuwait's Dasman Diabetes Institute and Kuwait University. The association between the FTO polymorphism with BMI as continuous and categorical (normal BMI [< 25] vs. overweight/obese [> 25]) variables was analyzed using both linear and logistic regression models, respectively, with the assumption of both dominant and additive genetic models performed using the SNPassoc package from R statistics. RESULTS: The A allele was associated with increased BMI (β = 1.21; 95% CI = 0.16-2.26; p = 0.023). In concordance, the categorical BMI (normal vs. overweight/obese) also showed a significant association between the A allele and overweight/obesity (OR = 1.47; 95% CI = 1.01-2.12; p = 0.041). However, no association between the FTO variant was observed with cardiometabolic traits. CONCLUSION: We observed an association between the common FTO rs9939609 polymorphism and increased BMI (overweight/obesity) in Kuwaiti adults, which is consistent with previous research in other populations. Our findings encourage further investigation of genetic variants to elucidate the mechanisms involved in the development of obesity in such an obesogenic population.
OBJECTIVE: To investigate the effect of the common fat mass and obesity-associated (FTO) gene polymorphism rs9939609 on body mass index (BMI) in one of the most obese populations worldwide. SUBJECTS AND METHODS: Genotypic data for FTOrs9939609 were available for 1,034 unrelated Kuwaiti adults obtained from Kuwait's Dasman Diabetes Institute and Kuwait University. The association between the FTO polymorphism with BMI as continuous and categorical (normal BMI [< 25] vs. overweight/obese [> 25]) variables was analyzed using both linear and logistic regression models, respectively, with the assumption of both dominant and additive genetic models performed using the SNPassoc package from R statistics. RESULTS: The A allele was associated with increased BMI (β = 1.21; 95% CI = 0.16-2.26; p = 0.023). In concordance, the categorical BMI (normal vs. overweight/obese) also showed a significant association between the A allele and overweight/obesity (OR = 1.47; 95% CI = 1.01-2.12; p = 0.041). However, no association between the FTO variant was observed with cardiometabolic traits. CONCLUSION: We observed an association between the common FTOrs9939609 polymorphism and increased BMI (overweight/obesity) in Kuwaiti adults, which is consistent with previous research in other populations. Our findings encourage further investigation of genetic variants to elucidate the mechanisms involved in the development of obesity in such an obesogenic population.
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