KL and hyperinsulinemic hypoglycemia, familial, 4: Compared with non-deficient vitamin D patients, patients with deficiency were more likely to be male; have higher SBP, DBP, UACR, UPCR, 24-h urine protein, serum creatinine, phosphorus, potassium, total cholesterol, i-PTH, FGF23, klotho, hepcidin, angiotensin levels; have lower eGFR, hemoglobin, uric acid, albumin, calcium and sodium levels.