Effects of RS9939609 Gene Variant in FTO Gene on Weight Loss and Cardiovascular Risk Factors After Biliopancreatic Diversion Surgery

A sample of 119 morbidly obese patients' body mass index (BMI) > 40 kg/m² were operated. Weight, fat mass, blood pressure, basal glucose, triacylglycerols, total cholesterol, low density lipoprotein cholesterol and high density lipoprotein cholesterol were measured at basal visit and at each visit (basal, 3, 9 and 12 months). The frequency of metabolic comorbidities was recorded at each visit.

Thirty-seven patients (31.1%) had genotype TT (wild type group), 58 (48.7%) patients had genotype TA and 24 patients (20.2%) had genotype AA. In the wild and mutant type groups, BMI, weight, waist circumference, systolic blood pressure and diastolic blood pressure decreased in a significant way. In the wild type groups, glucose, total cholesterol, low density lipoprotein (LDL) cholesterol and triacylglycerol concentrations decreased at 3, 9 and 12 months after surgery. In the mutant type groups, glucose, total cholesterol and triacylglycerol concentrations decreased at 3, 9 and 12 months after surgery. LDL cholesterol decreased at 9 and 12 months after surgery. Initial weight percent loss at 3 months of follow-up was higher in the wild type group (26.1% vs. 18.6%: p < 0.05). The initial weight percent loss at 9 or 12 months was similar in both genotypes.