The risk prediction model for sarcopenia in HD patients was then established based on the formula: P = 1/(1 + eY) where e stands for the base of natural logarithm, Y = -3.316 + 0.651 × age ≥ 60 years + 1.168 × C-reactive protein ≥ 3 mg/L + 2.769 × serum phosphorus < 1.13 mmol/L-1.011 × serum phosphorus 1.13 ~ 1.78 mmol/L + 1.428 × BMI < 18.5 kg/m2 -2.122 × BMI 18.5 ~ 24.9 kg/m2 + 1.422 × MAMC < 22.64 cm. This evidence concerns the gene CRP and Huntington disease.