For the DS population, Na+ , urea, creatinine, TG, total cholesterol, AST, AF, MCV, ESR, MCH, and RDW showed a significant positive correlation with age, while eGFR, ALT, B12, hemoglobin, hematocrit, RBC, MCHC, and platelet count showed a significant negative correlation. This evidence concerns the gene GPT and atrial fibrillation.