Table 4 The association between IFN-γ and sustained virologic response in HCV subgroups (High vs. Low viral load).

From: Elevated on-treatment levels of serum IFN-gamma is associated with treatment failure of peginterferon plus ribavirin therapy for chronic hepatitis C

IFN-γ (pg/ml)

 

Low viral load (4 × 105 IU/ml)

  

High viral load (>4 × 105 IU/ml)

Odds ratio

SVR

Non-SVR

X2 or Fisher’s

Odds ratio

SVR

Non-SVR

X2 or Fisher’s

(n = 48)

(n = 6)

p-value

OR (95% C.I)

(n = 25)

(n = 12)

p-value

OR (95% C.I)

IFN-γ 4wk

 <180

43(91.5%)

4(8.5%)

0.168

1.28 (0.80~2.06)

21 (80.8%)

5 (19.2%)

0.018

2.22 (0.99~4.96)

180

5(71.4%)

2(28.6%)

  

4 (36.4%)

7 (63.6%)

  

IFN-γ 12wk

 <120

37 (94.9%)

2 (5.1%)

0.044

1.29 (0.95~1.77)

16 (84.2%)

3 (15.8%)

0.038

1.68 (1.02~2.78)

120

11 (73.3%)

4 (26.7%)

  

9 (50.0%)

9 (50.0%)

  

IFN-γ EOT

 <40

37 (94.9%)

2 (5.1%)

0.044

1.29 (0.95~1.77)

15 (78.9%)

4 (21.1%)

0.170

1.42 (0.89~2.28)

40

11 (73.3%)

4 (26.7%)

  

10 (55.6%)

8 (44.4%)

  
  1. p.s. EOT: end of treatment.