Journals / Marmara Medical Journal / 2026 / Volume: 38 Issue: 3

Potential association of GCK rs2268576 and rs741038 polymorphisms with type 2 diabetes mellitus in the Turkish population

Yaşar Sertbaş(University of Health Sciences Fatih Sultan Mehmet Education and Research Hospital)0000-0002-9685-4486
Seda Güleç(Faculty of Medicine, Yeditepe University)0000-0002-8119-2862
Sadettin İlker Güvenç(Bakırköy Mazhar Osman Mental Health and Neurological Diseases Education and Research Hospital)0000-0002-4394-2538
Özden Ezgi Üner(University of Health Sciences Fatih Sultan Mehmet Education and Research Hospita)0000-0001-5158-5502
Meltem Sertbas(University of Health Sciences Fatih Sultan Mehmet Education and Research Hospital)0000-0001-8987-7199
Hasan Aydın(Endocrinology Clinic, İstanbul)0000-0003-4246-0681
Pages
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Publication Date
2025-10-10
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Although, no relationship was found between these GCK polymorphisms and diabetes itself, the rs741038 GG genotype may indicate risk for diabetic nephropathy, independent of glycemic control.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Polymorphisms, defined as variations in specific genes, are common in human populations and usually do not cause disease.
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Key Findings & Data:This study aimed to investigate the potential association of two glucokinase (GCK) gene polymorphisms (rs2268576 and rs741038) with the development and metabolic regulation of type 2 diabetes mellitus.
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Conclusion & Impact:Conclusion: Although, no relationship was found between these GCK polymorphisms and diabetes itself, the rs741038 GG genotype may indicate risk for diabetic nephropathy, independent of glycemic control.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Type 2 diabetes · MODY2 · GCK rs741038

Abstract

Objective: Polymorphisms, defined as variations in specific genes, are common in human populations and usually do not cause disease. However, some may influence disease susceptibility or progression. This study aimed to investigate the potential association of two glucokinase (GCK) gene polymorphisms (rs2268576 and rs741038) with the development and metabolic regulation of type 2 diabetes mellitus. Patients and Methods: A total of 134 individuals were enrolled, including 58 patients with type 2 diabetes and 76 non-diabetic controls from outpatient clinics. Genomic DNA was extracted from peripheral blood samples, and genotyping for rs2268576 and rs741038 was performed using real-time polymerase chain reaction (PCR). Genotypic distributions were compared between groups and correlated with laboratory parameters obtained during clinical follow-up. Results: No significant differences were found in the genotypic distributions of rs2268576 and rs741038 between diabetic patients and controls (P> 0.05). Similarly, no association was observed with fasting glucose, postprandial glucose, or HbA1c. However, individuals with the GG genotype of rs741038 had significantly higher microalbumin/creatinine ratios (P = 0.03), suggesting a potential genetic link to diabetic nephropathy despite no association with diabetes development. Conclusion: Although, no relationship was found between these GCK polymorphisms and diabetes itself, the rs741038 GG genotype may indicate risk for diabetic nephropathy, independent of glycemic control.

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Cite This Article

Sertbaş, Y., Güleç, S., Akdeniz, F. T., Güvenç, S. İ., Üner, Ö. E., Sertbas, M., Aydın, H., İsbir, T., *, Y. S. (2025). Potential association of GCK rs2268576 and rs741038 polymorphisms with type 2 diabetes mellitus in the Turkish population. Marmara Medical Journal, Volume: 38 Issue: 3. https://doi.org/10.5472/marumj.1800187

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