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Table 1 Therapeutic drug monitoring and selected laboratory values

From: Sofosbuvir and ribavirin before liver re-transplantation for graft failure due to recurrent hepatitis C: a case report

Tx wk

RBV dose (mg)

RBV level (ng/ml)

SOF dose (mg)

SOF level (ng/ml)

CsA dose (mg)

CsA level (μg/l)

Creat. (μmol/l)

INR

Total bilirubin (μmol/l)

HCV RNA (logIU/ml)

−3

-

ND

-

-

50-50

79

124

1.5

119

5.9

−1

400

873

-

-

50-50

77

121

1.7

102

6.0

0

400

1253

-

-

50-50

69

118

1.6

101

5.8

1

600

1453

400

ND

50-50

67

132

1.7

102

2.6

2

600

2161

400

0.7

50-50

83

113

1.7

118

<1.2 (traces)

3

600

2234

400

ND

50-50

91

138

1.7

103

ND

4

400

2457

400

0.8

50-50

86

160

1.8

168

ND

5

400

1968

400

NA

50-50

103

133

1.8

83

ND

6

400

2789

400

1.9

50-25

81

173

2.0

106

ND

8

400

2594

400

ND

50-25

63

203

1.9

129

ND

10

400

2231

400

ND

50-25

79

188

1.6

116

ND

  1. Treatment weeks (Tx wk) relate to the start of sofosbuvir (SOF). Ribavirin (RBV) was started following the blood drawing on week -3 and SOF following the blood drawing on week 0. Creat., creatinine; CsA, cyclosporine A; INR, international normalized ratio; NA, not available; ND, not detectable; RBV, ribavirin.