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Predictive factors for achieving sustained virological response among patients with chronis Hepatitis C treated with pegasys interferon and ribavirine
Authors: Anila Kristo, Jonila Çela, Erisela Dino, Eriseldi Rapi, Elona Lamja, Qemajl Aliu, Niko Leka, Jovan Basho
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Aim: A number of factors influence response to therapy among chronic hepatitis C patients treated with Peginterferon alfa-2a and Ribavirine. Predictors of treatment success in routine clinical practice remain to be established. The aim of this study was to assess the effects of host and viral related factors during treatment of chronic hepatitis C.
Methods: A total of 80 patients, diagnosed with CHC, were included in this prospective study during the period 2008-2012. All the patients were treated with Peginterferon alfa-2a (180 μg s.c/week) and Ribavirine 800-1200 mg/day (according to body weight and genotype). The duration of treatment varied from 24-48 weeks according to the virological response. The primary end point was SVR defined as undetectable HCVRNA level 24 weeks after the end of treatment. We assessed the impact on SVR of age (<40, 40-55 and >55 years), sex (males vs. females), BMI (<27 vs. >27), genotype (1+4 vs. 2+3) and baseline viral load (HCVRNA>800000 UI/ml vs. HCVRNA<800000 UI/ml). Data were analyzed statistically by use of T-test.
Results: Regardless the genotype, 47(58.75%) patients had SVR and 33 (41.25%) had non-SVR. 55.3% of females and 44.7% of males achieved SVR, without significant differences between them. The rates of SVR in groups of patients <40, 40-55 and >55years were 53%, 59% and 73.3%, respectively, with significant differences between group 1 and group 3 (P= 0.03). Conversely, the prevalence of genotype 1b in group 1 was higher than in group 3 (79% vs. 34%, P<0.001). The group of patients with BMI<27 had a SVR rate higher than those with BMI>27 (72% vs. 50 %, P<0.05). The patients with genotypes 2 and 3 had higher SVR rates than those with genotypes 1 and 4 (83% vs. 48%, P<0.01). Patients with baseline HCVRNA<800000UI/ml had higher SVR rates than those with HCVRNA>800000 (P<0.01).
Conclusion: BMI<27, genotype 2 and 3, and low viral load at baseline (<800000UI/ml) should be considered as positive predictive factors in CHC treatment response, whereas there is no significant difference between males and females regarding the SVR rate. Importantly, age <40 years does not seem to be a positive predictive factor in our country, which may be explained by the high prevalence of genotype 1b in this group of patients.