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. 2022 Sep 7;16(1):100–110. doi: 10.1093/ckj/sfac195

Table 1:

Description of patients presenting with MIDANs.

Characteristics MIDANs (N = 28)
Demographics
 Age at diagnosis (years), median (IQR) 52 (34–64)
 Sex (male/female), n/n 19/9
 BMI (kg/cm2), median (IQR) 24 (20–27)
Kidney disease, n (%)
 Tubulointerstitial nephropathy 14 (50)
 Documented by kidney biopsy 6 (21.4)
 Glomerular disease 9 (32.1)
 FSGS 3 (10.7)
 Nephrotic syndrome 3 (10.7)
 Documented by kidney biopsy 3 (10.7)
 CAKUT 4 (14.3)
 Kidney cysts 2 (7.1)
 Urinary tract abnormalities 2 (7.1)
 Fanconi syndrome 2 (7.1)
 Other tubulopathy 2 (7.1)
 Kidney disease under the care of a nephrologist 14 (50)
 ESRD 9 (32.1)
 Transplantation 4 (14.3)
Biological characteristicsa
Urinalysis
 Protein/creatinine (g/g), median (IQR) 0.6 (0.36–2.07)
 Albumin/creatinine (g/g), median (IQR) 0.37 (0–1.82)
 Haematuria, n (%) 1 (3.6)
 Leukocyturia, n (%) 12 (42.9)
 Glycosuria, n (%) 1 (3.6)
Blood ionogram, median (IQR)
 Calcium (mg/dl) 9.3 (8.2–9.7)
 Phosphorus (mg/dl) 3.7 (3.4–4.3)
 Sodium (mmol/l) 139 (137–141)
 Chloride (mmol/l) 103.5 (101–106)
 Glycemia (mg/dl) 98.5 (88.3–108.1)
 Potassium (mmol/l) 4.41 (3.9–4.7)
 Proteins (g/l) 70.5 (64.75–74)
 Albumin (g/l) 38.1 (34.7–42.5)
Increased uric acid (female >5 mg/dl; male >6 mg/dl), n (%) 11 (39.3)
GFR at diagnosis (ml/min/1.73 m2), median (IQR) 60 (27–84)
GFR slopeb (ml/min/1.73 m2/year), median (IQR) −3 (−6–0)

BMI: body mass index; CPK: creatine phosphor-kinase.

aBiological characteristics at the time of MIDAN diagnosis.

bGFR slope during a median observation period of 26 months.

Conversion factors for units: serum calcium in mg/dl to mmol/l, × 0.2495; serum phosphorus in mg/dl to mmol/l, × 0.3229; serum glucose in mg/dl to mmol/l, × 0.05 551; uric acid in mg/dl to µmol/l, × 59.58.