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P0657
ADDING TENOFOVIR TO PEGYLATED INTERFERON ENHANCES
END OF TREATMENT HBsAg LOSS IN HBeAg NEGATIVE CHRONIC
HEPATITIS B PATIENTS
P. Marcellin1, M. Martinot Peignoux2, R. Moucari3, M. Lapalus2,
C. Castelnau3, F. Mouri4, M. Pouteau3, N. Giuliy3, N. Boyer3,
T. Asselah1. 1Service d’h´epatologie Hˆopital Beaujon, 2CRI paris
Montmartre UMR1149 inserm, 3Service d’h´epatologie Hˆopital Beaujon,
4Hˆopital Beaujon AP-HP, Clichy, France
E-mail: [email protected]
Background and Aims: It remains unclear whether adding
a nucleot(s)ide analogue enhances the efficacy of pegylated
interferon alfa-2a (PegIFN) by accelerating HBsAg decline and
clearance.We aimed to assess efficacy of the combination of PegIFN alfa-2a + tenofovir (TDF).
Methods: 88 CHB patients [26 HBeAg(+); 62 HBeAg(−)] treated 48
weeks. HBsAg measured at baseline, weeks 12, 24, end of therapy
(EOT), 24 weeks after treatment cessation.
Results: 43 patients [13 HBeAg(+); 30 HBeAg(−)] received PegIFN
monotherapy and 45 patients [13 HBeAg(+); 32 HBeAg(−)] received the combination of PegIFN +TDF. SVR was 38%, 23% and 45% in the overall population, HBeAg(+) and HBeAg(−), respectively. HBe(+) positive patients were not further analysed.
Among the 62 HBe(−) patients, EOT response was 90% and 100% in PegIFN and PegIFN +TDF patients, respectively. SVR was observed in
33% and 53% of PegIFN and PegIFN +TDF patients, respectively. EOT HBsAg loss was observed in 6.6% and 12.5% of PegIFN and PegIFN +TDF patients, respectively. The negative predictive value (NPV) of baseline HBsAg >1500 IU/ml for SVR and HBs loss were 81% and 86% in PegIFN patients and 60% and 95% PegIFN +TDF patients.
The NPV of week 24 HBsAg decrease <0.5 log IU/ml were 73% and 57% of PegIFN alfa-2a and PegIFN +TDF patients, respectively. An end of follow-up HBs loss was observed in 20% and 19% of PegIFN and PegIFN +TDF patients, respectively.
Conclusions: In patients receiving PegIFN +TDF experience higher
SVR rate 53% versus 33% and EOT HBsAg loss 12.5% versus 6.6% than patients receiving PegIFN monotherapy.
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