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Table 2 Baseline characteristics associated with SVR12 to triple therapy

From: IL28B genotype predicts response to chronic hepatitis C triple therapy with telaprevir or boceprevir in treatment naïve and treatment-experienced patients other than prior partial- and null-responders

Baseline characteristics

All patients (n = 105)

Patients who achieved SVR12 to triple therapy (n = 69)

Patients who did not achieve SVR12 to triple therapy (n = 36)

P value

Gender, female (n, %)

31 (29.5)

25 (36.2)

6 (16.6)

0.037

Age, years (median, IQR)

52 (10)

52 (16)

53 (8)

0.151

Age, <52 years (n, %)

46 (43.8)

33 (47.8)

13 (36.1)

0.251

Ethnicity

 White/Caucasian (n, %)

86 (81.9)

58 (84.1)

28 (77.8)

0.550

 Black (n, %)

6 (5.7)

2 (2.9)

4 (11.1)

0.085

 Other (n, %)

13 (12.3)

9 (13)

4 (11.1)

0.775

Liver fibrosis

 Non-advanced, i.e. METAVIR F0-F2 (n, %)

55 (52.4)

41 (59.4)

14 (38.9)

0.046

 Advanced, i.e. METAVIR F3 or F4 (n, %)

50 (47.6)

28 (40.6)

22 (61.1)

Previous HCV treatment

 Naïve

29 (27.6)

22 (31.9)

7 (19.4)

0.340

 Interruption due to side effects

5 (4.8)

3 (4.3)

4 (11.1)

0.783

 Viral breakthrough

7 (6.7)

3 (4.3)

4 (11.1)

0.393

 Relapser

33 (31.4)

28 (40.6)

5 (13.9)

0.020

 Partial responder

8 (7.6)

4 (5.8)

4 (11.1)

0.587

 Null responder

23 (21.9)

9 (13)

14 (38.9)

0.008

 Naïve, interruption due to side effects, viral breakthrough and relapsers (n, %)

74 (70.5)

56 (81.2)

18 (50.0)

0.001

 Partial and null responders (n, %)

31 (29.5)

13 (18.8)

18 (50.0)

HCV protease inhibitor

 Boceprevir (n, %)

17 (16.2)

13 (18.8)

4 (11.1)

0.307

 Telaprevir (n, %)

88 (83.8)

56 (81.2)

32 (88.9)

HCV genotype

 1a

45 (42.9)

21 (30.4)

24 (66.7)

0.001

 1b

43 (40.9)

35 (50.7)

8 (22.2)

 1 non-subtyped

17 (16.2)

13 (18.8)

4 (11.1)

0.307

 1a and 1 non-subtyped (n, %)

62 (59.1)

34 (49.3)

28 (77.8)

0.005

 1b (n, %)

43 (40.9)

35 (50.7)

8 (22.2)

HCV viral load, IU/mL (median, IQR)

1,833,451 (3,459,687)

1,417,630 (2,505,928)

2,115,100 (4,038,313)

0.005

HCV viral load, <800,000 IU/mL (n, %)

30 (28.5)

25 (36.2)

5 (13.9)

0.016

IL28B rs12979860 genotype

 CC (n, %)

23 (21.9)

20 (29)

3 (8.3)

0.015

 CT (n, %)

67 (63.8)

42 (60.9)

25 (69.4)

0.385

 TT (n, %)

15 (14.3)

7 (10.1)

8 (22.2)

0.093

IL28B rs8099917 genotype

 TT (n, %)

45 (42.8)

34 (49.3)

11 (30.5)

0.066

 GT (n, %)

51 (48.6)

31 (44.9)

20 (55.6)

0.301

 GG (n, %)

9 (8.6)

4 (5.8)

5 (13.9)

0.160

Combinations of IL28B SNPs

 rs12979860-CC and rs8099917-TT (n, %)

23 (21.9)

20 (29)

3 (8.3)

0.015

 rs12979860-CC and rs8099917-GT (n, %)

0

0

0

/

 rs12979860-CC and rs8099917-GG (n, %)

0

0

0

/

 rs12979860-CT and rs8099917-TT (n, %)

22 (20.9)

14 (20.3)

8 (22.2)

0.514

 rs12979860-CT and rs8099917-GT (n, %)

45 (42.9)

28 (40.6)

17 (47.2)

0.817

 rs12979860-CT and rs8099917-GG (n, %)

0

0

0

/

 rs12979860-TT and rs8099917-TT (n, %)

0

0

0

/

 rs12979860-TT and rs8099917-GT (n, %)

6 (5.7)

3 (4.3)

3 (8.3)

0.404

 rs12979860-TT and rs8099917-GG (n, %)

9 (8.6)

4 (5.8)

5 (13.9)

0.160