SLC16A11 encodes monocarboxylate transporter 11 (MCT11), a proton-linked transporter that facilitates pyruvate transport across cellular membranes 1. The protein is involved in cellular lactate metabolism, with exhausted CD8+ T cells uniquely upregulating SLC16A11 to increase lactic acid uptake in tumor microenvironments 1. SLC16A11 plays a significant role in hepatic lipid metabolism, as genetic variants affect triglyceride accumulation and insulin sensitivity through lipin 1 upregulation 2. The gene shows strong disease associations with type 2 diabetes mellitus, particularly in Latin American populations carrying specific risk haplotypes 3. These risk variants are associated with decreased insulin action, higher acute insulin secretory response, and elevated serum alanine aminotransferase levels 3. In non-diabetic individuals, SLC16A11 variants correlate with increased plasma insulin and BMI 4. The protein also affects lipid profiles, with haplotype carriers showing higher fasting glucose, total cholesterol, and LDL cholesterol levels 5. Clinically, SLC16A11 variants may serve as prognostic markers for hepatocellular carcinoma and influence immunotherapy sensitivity 6. Additionally, differential SLC16A11 expression occurs in offspring of mothers with gestational diabetes 7.