Older age; lower BMI, albumin, prealbumin, predialysis BUN, predialysis creatinine, and phosphorus levels; lower CSA of the thigh muscle, L3 trunk muscle, G. Med/MinM, and G. MaxM; and a higher PDFF of the thigh and L3 trunk muscle were identified as sarcopenia risk factors. This evidence concerns the gene TTR and sarcopenia.