Aim:
The objective of the study was to assess the potential connection between rs 9930506 within the FTO gene and the incidence of obesity and being overweight in a population of people who were admitted to an outpatient clinic.

Materials and methods:
We cumulatively investigated 464 consecutive patients from southern Poland who were admitted to the local outpatient clinic. They were divided into 3 groups (normal, overweight, obese). Genotyping of polymorphism rs 9930506 was performed by using fluorescent marked probes which had been previously prepaired to detect a single nucleotide polymorphism – TaqMan Pre-designed SNP Genotyping Assay (Applied Biosystems).

Results:
: In our group the prevalence of being overweight and obese was 72.3%, whence 23.9% constitutes people who were overweight and 48.4% those suffering from obesity. Patients being overweight and obese have a significantly higher blood glucose level than those from the normal group (p < 0.001). The levels of serum insulin in the obese subjects was significantly higher than in the other groups (overweight: p < 0.05, normal: p < 0.001) as well as the levels of overweight people compared to those of a proper weight (p < 0.01). Diabetes was reported in about 13% obese subjects, whereas for people with normative weight was it 2.13%. Subjects being overweight and obese have a significantly higher blood pressure level, higher cholesterol and triglyceride levels and lower eGFR. Our study did not shown any vital correlation between our FTO polymorphism and the prevalence of being overweight or obese. Moreover no significant relationship between rs9930506 FTO and waistline or BMI was found. Finally we proved that the studied polymorphism is connected with the content of adipose tissue in the human body.

Conclusions:
Being overweight and obese are connected with many metabolic disorders including carbohydrate and lipid metabolism. We did not find any correlation between rs9930506 and the prevalence of being overweight or obese. Polymorphism rs9930506 was found to be associated with the content of adipose tissue in the human body.