Association and haplotype analysis of TCF7L2 gene variants with development of obesity in type 2 diabetic patients among Northern Iranians

Introduction The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM). Materials and methods DNA extraction from whole blood of...

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Published inJournal of diabetes and metabolic disorders Vol. 24; no. 2; p. 177
Main Authors Abbaspour, Saima, Keshavarz, Parvaneh, Sharafshah, Alireza
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 28.07.2025
BioMed Central Ltd
Nature Publishing Group
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ISSN2251-6581
2251-6581
DOI10.1007/s40200-025-01658-w

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Abstract Introduction The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM). Materials and methods DNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13). Results Clinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese ( P  < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people ( P  = 0.021, OR = 0.60[0.38–0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT ( P  = 0.03) found, however, following p-value adjustment, it was not significant. Conclusion In conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males.
AbstractList Introduction The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM). Materials and methods DNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13). Results Clinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese (P < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people (P = 0.021, OR = 0.60[0.38-0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT (P = 0.03) found, however, following p-value adjustment, it was not significant. Conclusion In conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males. Keywords: Obesity, Type 2 diabetes, TCF7L2 gene, Variant, rs7903146
The current study aimed to investigate the possible association of well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM). DNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13). Clinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese (  < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people (  = 0.021, OR = 0.60[0.38-0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT (  = 0.03) found, however, following p-value adjustment, it was not significant. In conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males. The online version contains supplementary material available at 10.1007/s40200-025-01658-w.
Introduction The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM). Materials and methods DNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13). Results Clinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese ( P  < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people ( P  = 0.021, OR = 0.60[0.38–0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT ( P  = 0.03) found, however, following p-value adjustment, it was not significant. Conclusion In conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males.
The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM). DNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13). Clinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese (P < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people (P = 0.021, OR = 0.60[0.38-0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT (P = 0.03) found, however, following p-value adjustment, it was not significant. In conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males.
The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM).IntroductionThe current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM).DNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13).Materials and methodsDNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13).Clinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese (P < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people (P = 0.021, OR = 0.60[0.38-0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT (P = 0.03) found, however, following p-value adjustment, it was not significant.ResultsClinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese (P < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people (P = 0.021, OR = 0.60[0.38-0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT (P = 0.03) found, however, following p-value adjustment, it was not significant.In conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males.ConclusionIn conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males.The online version contains supplementary material available at 10.1007/s40200-025-01658-w.Supplementary InformationThe online version contains supplementary material available at 10.1007/s40200-025-01658-w.
IntroductionThe current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity occurrence among northern Iranians with Type 2 Diabetes Mellitus (T2DM).Materials and methodsDNA extraction from whole blood of all subjects was done by salting-out technique. A total of 483 T2DM patients (307 T2DM individuals without Obesity and 176 T2DM individuals with Obesity) were genotyped through TaqMan assay technology. Statistical analyses were computed by ASSOTEST, Haploview (ver. 4.2), SPSS (ver. 27), and Python (ver. 3.13).ResultsClinical characteristics assessments between the study groups showed that there was significant association for the gender type of T2DM individuals for being obese (P < 0.001, males were at higher risk). Importantly, the genetic association analysis uncovered that rs7903146 was associated with the susceptibility of Obesity among T2DM people (P = 0.021, OR = 0.60[0.38–0.93]) in a recessive model of inheritance. Genotype-Phenotype association analysis indicated no significant associations. Finally, using Python programming and based on libraries including Pandas, NumPy, SciPy, and statsmodels, 6 haplotypes with frequency higher than 0.05 found. One significant haplotype including TT-GG-GT (P = 0.03) found, however, following p-value adjustment, it was not significant.ConclusionIn conclusion, this study indicated various significant results highlighting on the association of rs7903146 with susceptibility to obesity among northern Iranians with T2DM. Importantly, this study showed that females are more at risk of getting obesity than males.
ArticleNumber 177
Audience General
Author Abbaspour, Saima
Keshavarz, Parvaneh
Sharafshah, Alireza
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Keywords Type 2 diabetes
Variant
Obesity
rs7903146
TCF7L2 gene
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Snippet Introduction The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372...
The current study aimed to investigate the possible association of well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity...
Introduction The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372...
The current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372 with obesity...
IntroductionThe current study aimed to investigate the possible association of TCF7L2 well-acknowledged SNPs including rs7903146, rs11196205, and rs12255372...
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SubjectTerms Analysis
Body fat
Chi-square test
Diabetes
Diabetics
Endocrinology
Genes
Genetic aspects
Genetic engineering
Genotype & phenotype
Haplotypes
Medicine
Medicine & Public Health
Metabolic Diseases
Metabolism
Obesity
Polymorphism
Research Article
Software
Statistical analysis
Transcription factors
Type 2 diabetes
Variance analysis
Title Association and haplotype analysis of TCF7L2 gene variants with development of obesity in type 2 diabetic patients among Northern Iranians
URI https://link.springer.com/article/10.1007/s40200-025-01658-w
https://www.ncbi.nlm.nih.gov/pubmed/40741526
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https://www.proquest.com/docview/3235028603
Volume 24
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