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Table 1 Clinical characteristics and outcomes

From: Early graft loss due to acute thrombotic microangiopathy accompanied by complement gene variants in living-related kidney transplantation: case series report

At Tx

Case 1

Case 2

Case 3

Age at Tx

23

24

36

Cause of ESRD

Unknown

Unknown

Unknown

Duration of dialysis, mos

16

9

10

HLA allele mismatches

4/8

3/8

4/8

Blood type (Recipient & Donor)

O RhD + 

A RhD + 

O RhD + 

Donor age at Tx

48

44

58

Donor type

LKT

LKT

LKT

CDC test

Negative

Negative

Negative

PRA pre-Tx

   

 Class I

Positive (NDSA)

Negative

Negative

 Class II

Positive (NDSA)

Negative

Negative

Induction therapy

ATG

CTX

ATG

Immunosuppressive therapy

TAC + MMF + PED

TAC + MMF + PED

CsA + MMF + PED

Adverse events after Tx

Acute rejection

No

No

SCr at discharge (μmol/L)

228

95

110

At diagnosis

Case 1

Case 2

Case 3

Time to onset post-Tx, days

45

60

39

Time to diagnosis post-Tx, days

64

64

68

Proteinuria

 ± 

2 + 

3 + 

Scr (μmol/L)

840

300

605

LDH (U/L)

742

463

612

HB (g/L)

81

67

94

PLT (× 109/L)

84

121

300

PRA

Negative

Negative

Positive (NDSA)

Serum C3 (g/L)

NA

0.90

0.48

Schistocytes on a PBS

 < 2%

NA

 < 2%

Serum anti-GBM antibody

Negative

Negative

Negative

Serum ANCA

Negative

Negative

Negative

TAC blood concentration (ng/ml)

7.7

9.9

7.2

Immunosuppressive therapy

TAC + MMF + PED

TAC + MMF + PED

CsA + MMF + PED

Concomitant events

ABMR?

CMV infection

CNI toxicity

ABMR

Genetic testing (Recipient & Donor)

Variant c.721C > T in CFHR3 gene

Variant c.3572C > T in CFH gene

Variant c.3578C > G in CFH gene

Treatment and prognosis

Case 1

Case 2

Case 3

Treatment therapy after diagnosis (time)

Ganciclovir

PE (POD70, 72, 76)

CRRT(POD78, 83, 86)

Convert TAC to SRL

PE

Bortezomib (POD73, 78)

Rituximab (POD75)

Graft survival from time of Tx, days

66

84

54

Outcome

Dialysis

Dialysis

Dialysis

  1. Tx Transplantation, ESRD End-stage renal disease, mos Months, HLA Human lymphocyte antigen, LKT living-related kidney transplantation, CDC Complement-dependent cytotoxicity, PRA Panel-reactive antibody, NDSA Nondonor-specific antibodies, ATG Antithymocyte globulin, CTX Cyclophosphamide, TAC Tacrolimus, MMF Mycophenolate mofetil, PED Prednisone, SCr serum creatinine, HB Hemoglobin, PLT Platelets, CsA Cyclosporine A, CMV Cytomegalovirus, CNI Calcineurin inhibitor, PBS Peripheral blood smear, GBM Glomerular basement membrane, ANCA Antineutrophil cytoplasmic antibodies, PLA2R Anti-phospholipase A2 receptor, ABMR Antibody-mediated rejection, PE Plasma exchange, CRRT Continuous renal replacement therapy, SRL Sirolimus, POD Postoperative day