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Article in Chinese | WPRIM | ID: wpr-416406

ABSTRACT

Objective To explore the influence factors on hepatitis B virus (HBV) relapse after nucleos(t)ide analogues (NA) withdrawal in the chronic hepatitis B (CHB) patients who met NA cessation criteria. Methods Eighty-one consecutive CHB patients were treated with NA, 38 with lamivudine (LAM), 25 with adefovir dipivoxil (ADV), 12 with entecavir (ETV), 6 with LAM +ADV. Among recruited patients, 40 were hepatitis B virus e antigen (HBeAg) positive, 41 were HBeAg negative, 67 of them were initial treatment, 14 were retreatment due to resistance to NA at baseline. The treatment was discontinued after meeting China therapeutic end-point criteria. HBV DNA, HBV serological markers, alanine aminotransferase (ALT) were measured respectively at baseline, every month before virological response, every 3 months after virological response, every month within first 6 months and every 2 months over 6 months after drugs withdrawal. Twelve probable influence factors on relapse which were sex, age, HBV family history, baseline HBV DNA,baseline HBeAg status, baseline ALT, virological response time, total duration of treatment, duration of additional treatment, the level of hepatitis B virus surface antigen (HBsAg) at cessation therapy,initial treatment or retreatment, drug category were analyzed with univariate, multivariate Cox regression modle and stratified analysis. The cumulative relapse was calculated by the Kaplan-Meier method. Results A total of 36 patients (44. 4%) relapsed within 1 year. Initial treatment or retreatment, HBV family history, virological response time, the level of HBsAg at cessation therapy were independent risk factors. The relapse rate of retreatment was higher than that of initial treatment (78.6% vs 37. 3% , χ2 = 7. 983, P = 0. 005) , those of patients with HBV family history higher than without family history (64. 5% vs 15.0%, χ2 =12. 096,P = 0.002), those of patients obtained virological response within 3 months lower than after 3 months(34. 0% vs 64. 3% , χ2 =6. 823,P=0. 009) , those of patients with HBsAg≤150 μg/L at cessation therapy lower than >150 μg/L(27. 6% vs 53. 8%, χ2=5. 199,P=0. 023). Conclusions Retreatment, HBV family history, later virological response and higher HBsAg level at cessation therapy are risk factors of relapse after NA withdrawal. Such patients should be treated with prolonged duration after meeting end-point criteria to strengthen the efficacy.

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