Meanwhile, albumin (β = -0.062, P < 0.001), dicarbonate (β = -0.079, P < 0.001), calcium (β = 0.796, P < 0.05), CT attenuation (β = -0.519, P < 0.05) and comorbidity of hypertension (β = -0.575, P < 0.05) were independently associated with serum FGF21 levels in patients on HD, as shown in Table 5. The gene discussed is FGF21; the disease is Hypertension.