Table 2 Renal presentation

 Nephrotic syndrome (n (%))

18/27 (66.7)

 Acute nephritic syndrome (n (%))

15/27 (55.6)

 Rapidly progressive glomerulonephritis (n (%))

15/27 (55.6)

 Hematuria (n (%)) (microscopic/macroscopic)

20/21 (95.2) (11/8)

 Serum creatinine, mg/dL (mean ± SD)

4.24 ± 2.93

 Creatinine > 4 mg/dL (n (%))

13/27 (48.1)

 eGFR, mL/min/1.73m² (mean ± SD (range))

23.7 ± 19.9 (3–82)

 Albumin, g/L (mean ± SD (range))

24.7 ± 7.4 (15–42)

 Proteinuria, g/day (mean ± SD)

5 ± 3.4 (0.4–16.4)

 Baseline serum creatinine, mg/dL (mean ± SD)

1.06 ± 0.3

 Low C4 levels (n (%))

2/26 (7.7)

 Low C3 levels (n (%))

4/25 (16.0)

 Both C3 and C4 low levels (n (%))

2/25 (8.0)

 High serum IgA levels (n (%))

11/13 (84.6)

 ANCA (n (%))

4/15 (26.7)