Table 1 Patient background characteristics

Recipient’s sex (male/female) (number)

48/79

Age at transplantation (median – range) (age)

44　(10–73)

Unknown case (number)

2

Original disease (number)

    Chronic glomerulonephritis

29

    IgA nephropathy・IgA vasculitis

40

    Focal segmental glomerulosclerosis・nephrotic syndrome

4

    Diabetic nephropathy

10

    Nephrosclerosis

7

    Autosomal dominant polycystic kidney disease

4

    Congenital anomaly of kidney and urinary tract

8

    Others

14

    Unknown etiology

11

Donor type (live/cadaver) (number)

112/15

Relation to recipient (number)

    Parent

59

    Sibling

8

    Offspring

2

    Other relative

1

    Spouse

42

    Cadaveric donor

15

Donor age (median – range) (age)

56　(25–82)

Blood type　 (compatible・incompatible) (number)

100/27

Induction immunosuppression - calcineurin inhibitor (number)

    Tacrolimus

110

    Ciclosporin

16

    Sparing

1

Period of kidney graft biopsy (median - range) (month)

24　(0.067–485)

Reason for biopsy (including repeated case) (case)

    Acute rejection suspected

47

    Chronic rejection suspected

10

    Proteinuria

8

    BK-polyoma virus nephropathy suspected

4

    Calcineurin inhibitor nephropathy suspected

1

    Protocol biopsy

58

Pathological diagnosis (including repeated case) (case)

    Stable recovery

38

    Borderline change

6

    T-cell mediated rejection

13

    Acute antibody-mediated rejection

8

    Chronic antibody-mediated rejection

32

    Acute calcineurin inhibitor nephrotoxicity

3

    Chronic calcineurin inhibitor nephrotoxicity

19

    Interstitial fibrosis/tubular atrophy Grade I

17

    Interstitial fibrosis/tubular atrophy Grade II

13

    Interstitial fibrosis/tubular atrophy Grade III

4

    Banff chronicity score sum < 2

53

    Banff chronicity score sum 2–3

37

    Banff chronicity score sum > 3

35