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CompletedNCT04205318Updated Dec 19, 2019

FTO Gene Variants and Diet in Obesity

An observational study in Obesity, Diet Habit and Genetic Predisposition, sponsored by Hacettepe University. Completed at 1 site in Turkey. Open to participants aged 24 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-12-19.

Sponsored by Hacettepe University · Observational

Study type
Observational
Model
Case-control
Time perspective
Cross-sectional
Enrollment
400
Ages
24 Years to 50 Years
Sex
All
01

Study summary

Studies have shown that the effect of fat mass and obesity-associated (FTO) gene on obesity is modulated by lifestyle factors. Hence, we aimed to determine whether two single nucleotide polymorphisms (SNPs) in the FTO gene are associated with obesity and to assess whether these associations were modified by lifestyle factors. The study included 200 obese and 200 non-obese individuals from Turkey. Our study suggests that the effect of the SNPs on obesity traits is likely to be influenced by lifestyle factors in this Turkish population.

02

Conditions studied

  • Obesity
  • Diet Habit
  • Genetic Predisposition

Keywords

  • obesity
  • gene-diet interaction
  • FTO gene variant
03

In context

Obesity

6,296 studies on the registry are indexed under Obesity; 1,692 are open to participants now.

This study's enrollment of 400 is above the median of 135 across 1,283 observational studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

Hacettepe University is the lead sponsor of 983 studies on the registry; 212 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
24 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

400 unrelated individuals, aged 24-50 years

Eligibility criteria

Inclusion Criteria:

  1. attending routine outpatient visits,
  2. aged 24 to 50 years,
  3. having a BMI ≥ 18.50 kg/m2
05

Study design

Observational model
Case-control
Time perspective
Cross-sectional
Enrollment
400 participants (actual)
Patient registry
No

Groups and cohorts

  • study

    obese (BMI ≥25.00 kg/m2, n=200)

  • control

    non-obese (BMI= 18.50-24.99 kg/m2, n=200)

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What researchers measure

Primary outcomes

  1. Genetic analysis of two SNPs at FTO gene

    FTO SNPs rs9939609 and rs10163409

    Time frame: up to 36 weeks

  2. Anthropometric measurements

    Body mass index, waist circumference, hip circumference, body composition

    Time frame: up to 36 weeks

  3. Biochemical measurements

    lipid profile, glucose, insulin, adiponectin

    Time frame: up to 36 weeks

07

Study locations

1 site
  • Zehra Buyuktuncer
    Ankara, 06100, Turkey
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 19, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04205318
Lead sponsor
Hacettepe University
Collaborators
University of Reading, The Scientific and Technological Research Council of Turkey
Responsible party
ZEHRA BUYUKTUNCER (Professor, Hacettepe University) — Principal investigator
First posted
Dec 19, 2019
Start date
Mar 1, 2017
Primary completion
Feb 1, 2018
Completion
Dec 31, 2018
Last update
Dec 19, 2019

Study contacts

Zehra Buyuktuncer
principal investigator · Hacettepe University, Department of Nutrition and Dietetics, Ankara, TURKEY
Vimales Karani Santhanakrishnan
principal investigator · Department of Food and Nutritional Sciences, University of Reading, UK

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2019. You cannot join it, but the record below documents what was studied.

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