Table 3 Renal biopsy findings in the combined discovery and validation samples

From: Histopathologic findings associated with APOL1 risk variants in chronic kidney disease

Morphologic finding

0 APOL1 RA

1 APOL1 RA

2 APOL1 RA

P (2 vs 0/1)

P (1 vs 0)

P (2 vs 1)

No. of patients

79

25

92

   

Mean age (range)

56 (15–84)

52 (28–91)

47 (33–88)

<0.001

0.4

0.1

Serum Cr mean, mg/dl (N)

3.8 (61)

3.6 (22)

4.3 (64)

0.3

0.7

0.4

24 h proteinuria, mean g/day (N)

3.1 (30)

2.4 (11)

3.9 (40)

0.1

0.4

0.1

Solidified+disappearing predominant GS

27 (34%)

9 (36%)

62 (67%)

0.01

0.3

0.01

Cases with segmental glomerulosclerosis

51 (65%)

13 (52%)

64 (70%)

0.3

0.4

0.2

Cases with severe tubular atrophy

36 (46%)

10 (40%)

64 (70%)

0.001

0.8

0.01

Cases with thyroidization-dominant TA

9 (11%)

4 (16%)

30 (33%)

0.001

0.8

0.2

Cases with microcystic tubular dilatation

6 (8%)

6 (24%)

31 (34%)

<0.001

0.06

0.5

Cases with severe arteriosclerosis

49 (62%)

15 (60%)

40 (43%)

0.1

0.9

0.2

Cases with severe arteriolar hyalinosis

21 (27%)

6 (24%)

14 (15%)

0.1

0.9

0.5

  1. Abbreviations: RA, risk allele; GS, glomerulosclerosis; TA, tubular atrophy; N, number of patients with data available.