5 ug/kg/week for 24 weeks along with continuation of nucleoside till end of therapy) for 52 weeks. Monitoring included Hepatitis B profile (HbsAg, HbeAg, Anti-Hbe, HBV DNA levels) and safety assessment (hematology, thyroid profile and growth assessment). Results: A total of 33 chronic hepatitis b patients (20 in immunotolerant and 13 in immunoclearance phase) were enrolled in the study. 10 immunotolerant and 5 immunoclearance children agreed to participate in the study

and were given the sequential therapy. Mean age of the children was 10.16 + 4.58 years. Of 11 patients with available genotype data, 8 belonged to genotype D with 2 patients of genotype A and 1 Dabrafenib mouse of genotype B. In Immunoclearance group (3 in lamivudine and 2 in tenofovir RO4929097 purchase group), all 5 patients (100 %) cleared HbeAg after completion of therapy

and 2 out of 5 (in lamivudine group) cleared HbsAg with appearance of anti-Hbs suggestive of cure. In the immunotolerant phase, none out of the 10 patients had HbeAg clearance after 52 weeks of therapy. Side effects included mild cytopenias (4 patients), transient flu-like illness (all patients) and interferon dose reduction in 2 patients. Conclusion: In immunoclearance phase, sequential therapy allows HbeAg seroconversion in all cases and around half of the cases may be amenable

to apparent cure with HbsAg loss. Six months of Pegylated Interferon therapy preceded by nucleoside therapy is not sufficient enough to allow response in immunotolerant phase which may be due to predominance of Genotype D in our population. Overall, therapy was well tolerated by all children Disclosures: The following people have nothing to disclose: Vikrant Sood, Sanjeev K. Verma, Seema Alam, Rajeev Khanna, Dinesh Rawat Data on long-term outcomes after interferon (IFN) based therapy in chronic hepatitis B (CHB) are limited. mRNA expression of PRKD3 interferon-stimulated genes (ISG) in pre-treatment liver biopsy in immunotolerant CHB patients prior to IFN therapy showed that lower mRNA CXCL10 expression in the liver was associated with therapy response, but there was wide variability in mRNA ISG expression results in therapy non-responders. We aimed to assess whether different viral (genotype, precore) factors at baseline and long-term post-therapy responses might contribute to variability in ISG expression and can predict long- term CHB outcome. Patients: 23 patients (8 males, median age 10.2 years) with infancy-acquired CHB, treated for 52 weeks [lead-in LAM (3mg/kg/d) for 9 weeks; add-on IFN-α (5MU/ m2TIW) from week 9] were followed-up 13 years post-stopping therapy.