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Table 1 Association of baseline NTRI resistance mutations and viral failure after 12 weeks on HAART

From: Baseline resistance to nucleoside reverse transcriptase inhibitors fails to predict virologic response to combination therapy in children (PACTG 338)

 

d4T plus RTV group

Number with a mutation

ZDV plus 3TC plus RTV group

Number with a mutation

 

Baseline resistance mutation codons

RNA > 400 at week 12

(N = 19)

RNA ≤ 400 at week 12

(N = 26)

RNA > 400 at week 12

(N = 22)

RNA ≤ 400 at week 12

(N = 25)

Total number (%) with a resistance mutation at baseline

(N = 92 children)

NRTI resistance mutationsa

215

14

19

9b

19b

61 (66)

41

8

11

6

14

39 (42)

67

4

13

6

11

34 (37)

210

4

12

4

10

30 (33)

70

4

10

6

9

29 (32)

69

4

4

5

7

20 (22)

118

2

7

5

5

19 (21)

219

3

8

3

5

19 (21)

74

2

6

1

4

13 (14)

184

2

1

1

1

5 (5)

44

0

2

0

2

4 (4)

151

0

0

0

2

2 (2)

65

0

1

0

0

1 (1)

75

0

1

0

0

1 (1)

116

0

0

0

1

1 (1)

Any NRTI

16

23

15

23

77 (84)

Any PI or NRTI

19

25

21

25

90 (98)

  1. a. No cases with mutations were observed for the following NRTI mutations: 62, 77 and 115.
  2. b. P = 0.019, Fisher's exact test