Table 2 TAC concentration/weight-adjusted dose ratio (C/D/Kg) in the first 15 days from transplantation stratified by donor CYP3A5 genotype, recipient age and GRWR. Asterisks (*) indicate statistically significant differences between the marked group and the others.

From: Early impact of donor CYP3A5 genotype and Graft-to-Recipient Weight Ratio on tacrolimus pharmacokinetics in pediatric liver transplant patients

Post-transplant days

TAC C/D/Kg (median and interquartile range)

Day 1

Day 2

Day 3

Day 4

Day 5

Day 6

Day 7

Day 8

Day 9

Day 10

Day 11

Day 12

Day 13

Day 14

Day 15

Donor CYP3A5 gen

Quartiles

CYP3A5 *1/*3

1

32.5

27.9

33.6

28.0

27.1

23.3

24.5

21.5

20.4

17.2

17.0

21.0

23.0

20.6

19.6

2

62.4

51.5

47.5

42.4

41.5

57.3

40.7

39.7

27.5

28.4

34.0

34.1

34.2

30.4

32.7

3

93.1

74.0

63.4

73.5

80.5

85.5

59.8

68.0

44.7

45.1

50.5

65.3

113.3

65.2

136.3

CYP3A5*3/*3

1

71.5

53.1

61.4

46.0

45.7

38.1

35.3

40.3

33.7

29.7

28.2

29.6

37.7

30.9

35.1

2

147.3*

85.8*

122.2*

111.7*

93.0*

74.0*

67.2*

70.2*

60.8*

57.6*

54.6

63.0

60.1

54.7

50.4

3

194.3

144.4

199.3

190.5

164.4

156.2

121.9

103.0

123.8

94.2

84.3

103.7

92.9

81.8

84.0

p values

 < 0.001

 < 0.001

 < 0.001

 < 0.001

 < 0.001

0.050

0.022

0.023

 < 0.001

0.025

0.071

0.122

0.124

0.073

0.272

 

Recipientage

Quartiles

 < 2 years

1

55.7

30.8

33.6

35.3

31.2

22.1

24.5

24.0

20.9

18.1

20.5

20.6

27.8

24.2

18.4

2

94.8

62.8

58.7

49.0

45.1

57.0

39.0

43.2

34.4

35.6

30.0

39.4

46.1

32.8

36.9

3

172.36

94.3

187.1

165.2

96.0

93.5

73.8

93.3

70.5

86.2

72.6

120.5

93.5

79.8

78.4

2–8 years

1

39.60

29.7

22.3

29.6

40.8

33.6

25.4

38.1

24.0

22.6

26.8

23.5

27.5

27.8

31.9

2

70.0

56.3

66.9

57.0

70.4

60.2

57.2

62.7

41.9

41.9

44.7

46.3

43.3

47.3

53.6

3

102.86

85.6

120.2

127.0

128.6

109.4

92.4

96.8

78.5

76.2

81.2

76.8

89.5

63.6

77.8

 ≥ 8 years

1

117.0

83.0

91.3

63.9

64.3

49.5

40.2

45.2

34.0

40.5

39.7

38.5

40.6

48.0

41.5

2

138.9*

128.4*

137.8*

125.4*

137.9*

136.0*

94.3*

76.1

67.4

58.8

62.5

66.4

68.5

77.3

82.0

3

205.0

166.2

198.1

244.4

183.8

177.0

141.9

109.4

125.1

92.5

85.3

93.0

128.5

128.0

127.4

p values

0.022

0.002

0.036

0.056

0.016

0.024

0.024

0.200

0.073

0.208

0.210

0.648

0.552

0.051

0.108

 

GRWR

Quartiles

Normal

(2–3%)

1

63.8

52.6

47.8

45.5

40.3

37.4

36.4

39.7

30.6

35.1

45.9

36.2

28.1

35.1

32.5

2

92.7

74.1

87.1

64.8

94.6

95.7

61.3

65.8

60.8

57.0

62.5

61.3

55.0

56.0

74.3

168.1

138.0

196.4

187.9

157.3

156.2

123.5

81.9

117.0

83.1

79.0

79.7

96.0

97.0

85.9

Large

(3–5%)

65.5

55.4

61.7

41.2

37.4

44.6

26.1

30.9

23.8

17.0

21.4

26.0

37.5

27.7

17.2

153.1

80.9

143.9

108.4

64.7

59.5

41.3

43.3

36.8

33.8

37.2

46.4

67.2

58.2

55.1

203.8

143.4

189.2

169.8

96.0

78.3

79.7

77.9

87.5

95.4

88.6

144.2

93.5

82.9

106.1

Extra-large

(> 5%)

32.8

30.8

20.8

19.6

32.5

21.9

22.3

25.9

21.9

17.4

17.4

20.3

24.4

21.8

18.9

56.1

53.1

38.9*

37.0*

45.1*

30.4*

25.4*

43.3*

28.7*

32.6

25.9

27.7

39.5

29.1

36.2

161.4

71.8

53.5

76.3

99.2

49.1

51.5

110.7

71.8

82.4

71.4

58.8

50.1

32.9

56.4

p values

0.348

0.142

0.015

0.013

0.002

 < 0.001

 < 0.001

0.023

0.008

0.092

0.845

0.594

0.833

0.017

0.210