Background: Type 2 Diabetes Mellitus has been found to increase the risk of cancer which is caused by conditions of hyperglycemia, hyperinsulinemia, and inflammation. These three factors are able to induce tumorigenesis process through mechanisms of glucotoxicity, lipotoxicity, and oxidative stress. Objective: This study aimed to measure and compare mutant p53 as tumor marker in Type 2 Diabetes Mellitus patients with and without cancer, to measure and compare HbA1c level in both groups, and to analyze the correlation between mutant p53 and HbA1c level in both groups. Materials and Methods: This study was a cross-sectional study with consecutive sampling technique in which two groups were involved, namely type 2 diabetes mellitus patients (n = 51) and type 2 diabetes mellitus patients with cancer (n = 51). Serological level of mutant p53 protein was analyzed using ELISA and HbA1c was measured with HbA1c Afinion Analyzer. Results: The serological level of mutant p53 in the type 2 diabetes mellitus patients (1.62 ± 0.08 ng/ml) showed no significant difference compared with type 2 diabetes mellitus patients with cancer (1.64 ± 0.09 ng/ml) (p = 0.774). Meanwhile, HbA1c level showed significant difference between type 2 diabetes mellitus patients (8.42 ± 0.25 %) and type 2 diabetes mellitus patients with cancer (7.02 ± 0.20 %) (p < 0.001). Mild correlations between mutant p53 and HbA1c level were found in both type 2 diabetes mellitus patients (r = 0.083; p = 0.561) and type 2 diabetes mellitus patients with cancer (r = 0.072; p = 0.617). Conclusion: Based on the result, there was no significant difference between mutant p53 in type 2 diabetes mellitus patients with and without cancer. HbA1c level was found to be significantly different in both groups. Meanwhile, there was no significant correlation between mutant p53 and HbA1c in both groups.

Keywords: Mutant p53, HbA1c, Type 2 diabetes mellitus, Cancer