Below are some of the most well-researched genetic variants linked to diabetes.
Aka, Tutun Das, et al. “Risk of Type 2 Diabetes Mellitus and Cardiovascular Complications in KCNJ11, HHEX and SLC30A8 Genetic Polymorphisms Carriers: A Case-Control Study.” Heliyon, vol. 7, no. 11, Nov. 2021, p. e08376. ScienceDirect, https://doi.org/10.1016/j.heliyon.2021.e08376.
Al-Naemi, Amjad Hazim, and Akram Jarjees Ahmad. “Is the Rs1801282 (G/C) Polymorphism of PPAR – Gamma Gene Associated with T2DM in Iraqi People?” Open Access Macedonian Journal of Medical Sciences, vol. 6, no. 3, Mar. 2018, pp. 447–55. PubMed Central, https://doi.org/10.3889/oamjms.2018.156.
Banihashemi, Pantea, et al. “Association Analysis of HHEX Gene Variant with Type 2 Diabetes Risk.” International Journal of Diabetes in Developing Countries, vol. 41, no. 1, Jan. 2021, pp. 43–47. Springer Link, https://doi.org/10.1007/s13410-020-00870-z.
Benn, Marianne, et al. “PCSK9R46L, Low-Density Lipoprotein Cholesterol Levels, and Risk of Ischemic Heart Disease.” Journal of the American College of Cardiology, vol. 55, no. 25, June 2010, pp. 2833–42. ScienceDirect, https://doi.org/10.1016/j.jacc.2010.02.044.
Blond, Martin Bæk, et al. “PPARG Pro12Ala Ala Carriers Exhibit Greater Improvements in Peripheral Insulin Sensitivity in Response to 12 Weeks of Aerobic Exercise Training.” Physiological Genomics, vol. 51, no. 6, June 2019, pp. 254–60. PubMed, https://doi.org/10.1152/physiolgenomics.00101.2018.
Caro-Gomez, María Antonieta, et al. “Association of Native American Ancestry and Common Variants in ACE, ADIPOR2, MTNR1B, GCK, TCF7L2 and FTO Genes with Glycemic Traits in Colombian Population.” Gene, vol. 677, Nov. 2018, pp. 198–210. PubMed, https://doi.org/10.1016/j.gene.2018.07.066.
Cauchi, Stéphane, et al. “Post Genome-Wide Association Studies of Novel Genes Associated with Type 2 Diabetes Show Gene-Gene Interaction and High Predictive Value.” PloS One, vol. 3, no. 5, May 2008, p. e2031. PubMed, https://doi.org/10.1371/journal.pone.0002031.
Gamboa-Meléndez, Marco Alberto, et al. “Contribution of Common Genetic Variation to the Risk of Type 2 Diabetes in the Mexican Mestizo Population.” Diabetes, vol. 61, no. 12, Dec. 2012, pp. 3314–21. PubMed Central, https://doi.org/10.2337/db11-0550.
Haghvirdizadeh, Polin, et al. “KCNJ11: Genetic Polymorphisms and Risk of Diabetes Mellitus.” Journal of Diabetes Research, vol. 2015, 2015, p. 908152. PubMed Central, https://doi.org/10.1155/2015/908152.
Hasan, Nehal Salah, et al. “Peroxisome Proliferator-Activated Receptor-γ Polymorphism (Rs1801282) Is Associated with Obesity in Egyptian Patients with Coronary Artery Disease and Type 2 Diabetes Mellitus.” Journal, Genetic Engineering & Biotechnology, vol. 15, no. 2, Dec. 2017, pp. 409–14. PubMed, https://doi.org/10.1016/j.jgeb.2017.08.002.
Hernandez-Escalante, Victor M., et al. “Replication of Obesity and Diabetes-Related SNP Associations in Individuals from Yucatán, México.” Frontiers in Genetics, vol. 5, Nov. 2014, p. 380. PubMed Central, https://doi.org/10.3389/fgene.2014.00380.
Hosseini-Esfahani, Firoozeh, et al. “Some Dietary Factors Can Modulate the Effect of the Zinc Transporters 8 Polymorphism on the Risk of Metabolic Syndrome.” Scientific Reports, vol. 7, no. 1, May 2017, p. 1649. PubMed, https://doi.org/10.1038/s41598-017-01762-9.
Hwang, Hyeon Seok, et al. “Validation of Identified Susceptible Gene Variants for New-Onset Diabetes in Renal Transplant Recipients.” Journal of Clinical Medicine, vol. 8, no. 10, Oct. 2019, p. 1696. PubMed Central, https://doi.org/10.3390/jcm8101696.
Kanoni, Stavroula, et al. “Total Zinc Intake May Modify the Glucose-Raising Effect of a Zinc Transporter (SLC30A8) Variant: A 14-Cohort Meta-Analysis.” Diabetes, vol. 60, no. 9, Sept. 2011, pp. 2407–16. PubMed, https://doi.org/10.2337/db11-0176.
Kommoju, Uma Jyothi, et al. “No Detectable Association of IGF2BP2 and SLC30A8 Genes with Type 2 Diabetes in the Population of Hyderabad, India.” Meta Gene, vol. 1, Dec. 2013, pp. 15–23. PubMed, https://doi.org/10.1016/j.mgene.2013.09.003.
Krentz, Nicole A. J., and Anna L. Gloyn. “Insights into Pancreatic Islet Cell Dysfunction from Type 2 Diabetes Mellitus Genetics.” Nature Reviews. Endocrinology, vol. 16, no. 4, Apr. 2020, pp. 202–12. PubMed, https://doi.org/10.1038/s41574-020-0325-0.
Lane, Jacqueline M., et al. “Impact of Common Diabetes Risk Variant in MTNR1B on Sleep, Circadian, and Melatonin Physiology.” Diabetes, vol. 65, no. 6, June 2016, pp. 1741–51. PubMed Central, https://doi.org/10.2337/db15-0999.
Langenberg, C., L. Pascoe, A. Mari, A. Tura, M. Laakso, T. M. Frayling, I. Barroso, R. J. F. Loos, N. J. Wareham, and M. Walker. “Common Genetic Variation in the Melatonin Receptor 1B Gene (MTNR1B) Is Associated with Decreased Early-Phase Insulin Response.” Diabetologia, vol. 52, no. 8, Aug. 2009, pp. 1537–42. PubMed Central, https://doi.org/10.1007/s00125-009-1392-x.
———. “Common Genetic Variation in the Melatonin Receptor 1B Gene (MTNR1B) Is Associated with Decreased Early-Phase Insulin Response.” Diabetologia, vol. 52, no. 8, Aug. 2009, pp. 1537–42. PubMed, https://doi.org/10.1007/s00125-009-1392-x.
Li, Qiuyan, et al. “Associations between Two Single-Nucleotide Polymorphisms (Rs1801278 and Rs2943641) of Insulin Receptor Substrate 1 Gene and Type 2 Diabetes Susceptibility: A Meta-Analysis.” Endocrine, vol. 51, no. 1, Jan. 2016, pp. 52–62. Springer Link, https://doi.org/10.1007/s12020-015-0770-z.
Li, Yan-yan, et al. “CDKAL1 Gene Rs7756992 A/G Polymorphism and Type 2 Diabetes Mellitus: A Meta-Analysis of 62,567 Subjects.” Scientific Reports, vol. 3, no. 1, Nov. 2013, p. 3131. www.nature.com, https://doi.org/10.1038/srep03131.
Liu, Chen, et al. “MTNR1B Rs10830963 Is Associated with Fasting Plasma Glucose, HbA1C and Impaired Beta-Cell Function in Chinese Hans from Shanghai.” BMC Medical Genetics, vol. 11, Apr. 2010, p. 59. PubMed Central, https://doi.org/10.1186/1471-2350-11-59.
Maestro, B., et al. “Transcriptional Activation of the Human Insulin Receptor Gene by 1,25-Dihydroxyvitamin D(3).” Cell Biochemistry and Function, vol. 20, no. 3, Sept. 2002, pp. 227–32. PubMed, https://doi.org/10.1002/cbf.951.
Mahmutovic, Lejla, et al. “Association of IRS1 Genetic Variants with Glucose Control and Insulin Resistance in Type 2 Diabetic Patients from Bosnia and Herzegovina.” Drug Metabolism and Personalized Therapy, vol. 34, no. 1, Mar. 2019. PubMed, https://doi.org/10.1515/dmpt-2018-0031.
Marín, Carmen, et al. “The Insulin Sensitivity Response Is Determined by the Interaction between the G972R Polymorphism of the Insulin Receptor Substrate 1 Gene and Dietary Fat.” Molecular Nutrition & Food Research, vol. 55, no. 2, Feb. 2011, pp. 328–35. PubMed, https://doi.org/10.1002/mnfr.201000235.
Maruthur, Nisa M., and Braxton D. Mitchell. “Zinc–Rs13266634 and the Arrival of Diabetes Pharmacogenetics: The ‘Zinc Mystique.’” Diabetes, vol. 63, no. 5, May 2014, pp. 1463–64. PubMed Central, https://doi.org/10.2337/db14-0151.
Mihaescu, Raluca, et al. “Genetic Risk Profiling for Prediction of Type 2 Diabetes.” PLoS Currents, vol. 3, Jan. 2011, p. RRN1208. PubMed Central, https://doi.org/10.1371/currents.RRN1208.
Ng, Maggie C. Y., et al. “Implication of Genetic Variants near TCF7L2, SLC30A8, HHEX, CDKAL1, CDKN2A/B, IGF2BP2, and FTO in Type 2 Diabetes and Obesity in 6,719 Asians.” Diabetes, vol. 57, no. 8, Aug. 2008, pp. 2226–33. PubMed, https://doi.org/10.2337/db07-1583.
Office of Dietary Supplements – Zinc. https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/. Accessed 17 Feb. 2026.
Peng, Feng, et al. “The Relationship between Five Widely-Evaluated Variants in CDKN2A/B and CDKAL1 Genes and the Risk of Type 2 Diabetes: A Meta-Analysis.” Gene, vol. 531, no. 2, Dec. 2013, pp. 435–43. ScienceDirect, https://doi.org/10.1016/j.gene.2013.08.075.
Peschke, Elmar, et al. “Melatonin and Pancreatic Islets: Interrelationships between Melatonin, Insulin and Glucagon.” International Journal of Molecular Sciences, vol. 14, no. 4, Mar. 2013, pp. 6981–7015. PubMed Central, https://doi.org/10.3390/ijms14046981.
Postmus, Iris, et al. “PCSK9 SNP Rs11591147 Is Associated with Low Cholesterol Levels but Not with Cognitive Performance or Noncardiovascular Clinical Events in an Elderly Population.” Journal of Lipid Research, vol. 54, no. 2, Feb. 2013, pp. 561–66. PubMed Central, https://doi.org/10.1194/jlr.M033969.
Qi, Lu, et al. “Genetic Predisposition, Western Dietary Pattern, and the Risk of Type 2 Diabetes in Men.” The American Journal of Clinical Nutrition, vol. 89, no. 5, May 2009, pp. 1453–58. PubMed, https://doi.org/10.3945/ajcn.2008.27249.
Qi, Qibin, et al. “Insulin Receptor Substrate 1 (IRS1) Gene Variation Modifies Insulin Resistance Response to Weight-Loss Diets in a Two-Year Randomized Trial.” Circulation, vol. 124, no. 5, Aug. 2011, pp. 563–71. PubMed Central, https://doi.org/10.1161/CIRCULATIONAHA.111.025767.
Rosta, Klara, et al. “Association Study with 77 SNPs Confirms the Robust Role for the Rs10830963/G of MTNR1B Variant and Identifies Two Novel Associations in Gestational Diabetes Mellitus Development.” PLoS ONE, vol. 12, no. 1, Jan. 2017, p. e0169781. PubMed Central, https://doi.org/10.1371/journal.pone.0169781.
Ruchat, S. M., et al. “Improvements in Glucose Homeostasis in Response to Regular Exercise Are Influenced by the PPARG Pro12Ala Variant: Results from the HERITAGE Family Study.” Diabetologia, vol. 53, no. 4, Apr. 2010, pp. 679–89. PubMed, https://doi.org/10.1007/s00125-009-1630-2.
Rung, Johan, et al. “Genetic Variant near IRS1 Is Associated with Type 2 Diabetes, Insulin Resistance and Hyperinsulinemia.” Nature Genetics, vol. 41, no. 10, Oct. 2009, pp. 1110–15. PubMed, https://doi.org/10.1038/ng.443.
Stancáková, Alena, et al. “Single-Nucleotide Polymorphism Rs7754840 of CDKAL1 Is Associated with Impaired Insulin Secretion in Nondiabetic Offspring of Type 2 Diabetic Subjects and in a Large Sample of Men with Normal Glucose Tolerance.” The Journal of Clinical Endocrinology and Metabolism, vol. 93, no. 5, May 2008, pp. 1924–30. PubMed, https://doi.org/10.1210/jc.2007-2218.
Tellechea, Mariana L., et al. “Pro12Ala Polymorphism of the Peroxisome Proliferatoractivated Receptor-Gamma Gene Is Associated with Metabolic Syndrome and Surrogate Measures of Insulin Resistance in Healthy Men: Interaction with Smoking Status.” Circulation Journal: Official Journal of the Japanese Circulation Society, vol. 73, no. 11, Nov. 2009, pp. 2118–24. PubMed, https://doi.org/10.1253/circj.cj-09-0320.
Vatankhah Yazdi, Kazem, et al. “SLC30A8, CDKAL1, TCF7L2, KCNQ1 and IGF2BP2 Are Associated with Type 2 Diabetes Mellitus in Iranian Patients.” Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy, vol. 13, Mar. 2020, pp. 897–906. PubMed Central, https://doi.org/10.2147/DMSO.S225968.
Wang, Xia, et al. “The Association between the Pro12Ala Variant in the PPARγ2 Gene and Type 2 Diabetes Mellitus and Obesity in a Chinese Population.” PLoS ONE, vol. 8, no. 8, Aug. 2013, p. e71985. PubMed Central, https://doi.org/10.1371/journal.pone.0071985.
Witka, Beska Z., et al. “Type 2 Diabetes-Associated Genetic Polymorphisms as Potential Disease Predictors.” Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy, vol. 12, Dec. 2019, pp. 2689–706. PubMed Central, https://doi.org/10.2147/DMSO.S230061.
Xie, Fangying, et al. “Precision Medicine in Diabetes Prevention, Classification and Management.” Journal of Diabetes Investigation, vol. 9, no. 5, Sept. 2018, pp. 998–1015. PubMed Central, https://doi.org/10.1111/jdi.12830.
Xu, Kuanfeng, et al. “Association between Rs13266634 C/T Polymorphisms of Solute Carrier Family 30 Member 8 (SLC30A8) and Type 2 Diabetes, Impaired Glucose Tolerance, Type 1 Diabetes–a Meta-Analysis.” Diabetes Research and Clinical Practice, vol. 91, no. 2, Feb. 2011, pp. 195–202. PubMed, https://doi.org/10.1016/j.diabres.2010.11.012.
Zeggini, Eleftheria, et al. “Multiple Type 2 Diabetes Susceptibility Genes Following Genome-Wide Association Scan in UK Samples.” Science (New York, N.Y.), vol. 316, no. 5829, June 2007, pp. 1336–41. PubMed Central, https://doi.org/10.1126/science.1142364.
Zhang, Xinxia, et al. “The Association between Melatonin Receptor 1B Gene Polymorphisms and Type 2 Diabetes Mellitus (T2DM) in Chinese Populations: A Meta-Analysis.” Annals of Palliative Medicine, vol. 9, no. 3, May 2020, pp. 957–66. PubMed, https://doi.org/10.21037/apm-20-691.
Zheng, Ju-Sheng, et al. “Circulating 25-Hydroxyvitamin D, IRS1 Variant Rs2943641, and Insulin Resistance: Replication of a Gene-Nutrient Interaction in 4 Populations of Different Ancestries.” Clinical Chemistry, vol. 60, no. 1, Jan. 2014, pp. 186–96. PubMed, https://doi.org/10.1373/clinchem.2013.215251.
Zhuang, Langen, et al. “The E23K and A190A Variations of the KCNJ11 Gene Are Associated with Early-Onset Type 2 Diabetes and Blood Pressure in the Chinese Population.” Molecular and Cellular Biochemistry, vol. 404, nos. 1–2, June 2015, pp. 133–41. PubMed, https://doi.org/10.1007/s11010-015-2373-7.
https://diabetes.diabetesjournals.org/content/57/2/514.long. Accessed 17 Feb. 2026.
https://mutage.oxfordjournals.org/content/26/2/309.long. Accessed 17 Feb. 2026.