부산대학교 도서관

Background Data on the genetic variants for type 2 diabetes mellitus (T2DM) in sub-Saharan African populations are very scarce. This study aimed to investigate the association of transcription factor 7-like (TCF7L2) with T2DM in a Cameroonian population and explore possible genotype-phenotype correlation. Methods This is a case-control study involving 37 T2DM patients and 37 non-diabetic volunteers of Cameroonian ethnicity aged 40 years old and above. We collected clinical and biological data to determine phenotypic traits. TCF7L2 was analyzed by genotyping for rs7903146 (C/T) using PCR-RFLP. Biochemical analyses were performed using a spectrophotometer with Chronolab kits. Statistical analyses were carried out using IBM SPSS, PS and Quanto. Results TCF7L2 was associated with T2DM in this Cameroonian population (p = 0.013 for alleles, and p = 0.013 for genotypes). The risk allele was C (9.5% patients vs. 0% healthy controls, OR = 16.56) and the protective allele was T (90.5% patients vs. 100.0% healthy controls, OR = 0.06). The risk genotype was C/T (18.9% patients vs. 0% healthy controls, OR = 18.44), while the protective genotype was T/T (81.1% patients vs. 100.0% healthy controls, OR = 0.054). The statistical power was 99.99%. TCF7L2 was not preferentially associated with a specific disease phenotype. Conclusion TCF7L2 is associated with T2DM in this Cameroonian population. The association is not dependent on a specific T2DM phenotype. Clinical genetic testing for TCF7L2 can help to predict the occurrence of T2DM in Cameroon. Keywords: Type 2 diabetes, Genetic association, Transcription factor 7-like 2 (TCF7L2), Sub-Saharan Africa, Cameroon
Author(s): Magellan Guewo-Fokeng[sup.1,2] , Eugene Sobngwi[sup.2,3,4] , Barbara Atogho-Tiedeu[sup.1,2] , Olivier Sontsa Donfack[sup.1,2] , Jean Jacques N Noubiap[sup.5,6] , Elvis Ndonwi Ngwa[sup.1,2] , Edith Pascale Mato-Mofo[sup.1,2] , Priscille Pokam Fosso[sup.1,2] [...]