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Investigation of the association between the TCF7L2 rs7903146 (C/T) gene polymorphism and obesity in a Cameroonian population: a pilot study Nguimmo-Metsadjio, Aurelie; Atogho-Tiedeu, Barbara; Noubiap, Jean Jacques; Evehe, Marie-Solange; Djokam-Dadjeu, Rosine; Donfack, Olivier Sontsa; Nanfa, Dieudonne; Mato, Edith Pascale M.; Ngwa, Elvis Ndonwi; Guewo-Fokeng, Magellan; Pokam-Fosso, Priscille; Mbacham, Wilfred F.; Mbanya, Jean Claude & Sobngwi, Eugene Abstract Objective: This study aimed at investigating the association between the rs7903146 (C/T) polymorphism of the TCF7L2 gene with obesity in a Cameroonian population. Method: This was a case-control pilot study including 61 obese and 61 non-obese Cameroonian adults. Anthropometric indices of obesity, blood pressure, fasting blood glucose, and blood lipids were measured. The rs7903146 (C/T) polymorphism of the TCF7L2 gene was genotyped using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), and genotypes were correlated with clinical and biological parameters. Results: The T allele was predominant in the study population with a frequency of 93%. No statistically significant difference was however observed between the genotypic (p = 0.50) and allelic frequencies (p = 0.58) of obese and non-obese subjects. Comparison of clinical and biochemical parameters of C allele carriers (CX = CC + CT) with those of TT genotype showed that there was no significant difference between the lipid profile of these two groups. Conclusion: The rs7903146 (C/T) polymorphism of the TCF7L2 gene might not be associated with obesity in the Cameroonian population. Keywords Obesity; Genetic association; TCF7L2; rs7903146 (C/T) polymorphism; Sub-Saharan Africa; Cameroon

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