Spontaneous HBeAg seroclearance increased chances for HBsAg seroclearance
Fung J. Am J Gastroenterol. 2014;doi:10.1038/ajg.2014.301.
October 8, 2014
Patients with chronic hepatitis B virus infection and positive for the hepatitis B e antigen had a greater chance of hepatitis B surface antigen seroclearance after experiencing spontaneous seroclearance of the hepatitis B e antigen, according to data from a recent study.
Clinical data from 775 patients enrolled at the Hepatitis and Liver Clinic of Queen Mary Hospital, Hong Kong, were collected between September 2005 and September 2007 to determine any factors associated with HBsAg seroclearance. Every patient underwent HBeAg seroclearance and were followed until January 2013. Patients were divided into three groups: group 1 consisted of patients that underwent HBeAg seroclearance and did not undergo or require treatment (n=428); group 2 included patients who received treatment-induced HBeAg seroclearance (n=197); and group 3 included patients who experienced spontaneous HBeAg seroclearance but needed antiviral therapy after seroclearance (n=150).
Forty-five patients underwent HBsAg seroclearance with a median time of 139 months from HBeAg seroclearance to HBsAg seroclearance. All patients were still HBsAg-negative at the end of follow-up. The rate of reaching HBsAg seroclearance after HBeAg seroclearance increased with time (0.3% at 1 year vs. 23.6% at 25 years).
HBsAg seroclearance was highest among patients in group 1 compared with patients in group 2 or 3. The HBsAg seroclearance rate at 25 years was 38% in group 1, 14.9% in group 2 and 0% in group 3 patients (P<.001). Multivariate analysis showed stable HBeAg antibodies and HBsAg levels were predictors of HBsAg seroclearance (P=.008).
“Spontaneous HBeAg seroclearance without the need for antiviral therapy afterward was associated with the highest rate of subsequent HBsAg seroclearance,” the researchers wrote. “The levels of HBsAg and not HBV DNA after HBeAg seroclearance were predictive of HBsAg seroclearance. Lower HBsAg levels were associated with higher change of future HBsAg seroclearance.”
Disclosure: The researchers report no relevant financial disclosures.
香港玛丽医院Fung等近日完成的一项研究表明,HBeAg阳性慢性乙型肝炎(CHB)患者发生自发性HBeAg血清学清除后不需要抗病毒治疗者,随后的HBsAg血清学清除率最高,HBsAg水平较低也和发生HBsAg血清学清除的机会较大相关。
该研究总共纳入775例HBeAg阳性、发生HBeAg血清学清除的CHB患者,对后来发生HBsAg血清学清除的相关因素进行分析。
在HBeAg血清学清除后第1、5、10、15、20和25年时,HBsAg血清学清除率分别为0.3%、1.3%、3.0%、8.9%、15.7%和23.6%。自发性HBeAg血清学清除后不需要抗病毒治疗患者的HBsAg血清学清除率显著高于接受抗病毒治疗后获得HBeAg血清学清除者,以及自发性HBeAg血清学清除后需要抗病毒治疗的患者。在发生HBeAg血清学清除后第25年时,上述三组的HBsAg血清学清除率分别为38.0%、14.9%和0%(P<0.001)。
获得HBsAg血清学清除患者的中位数HBsAg水平显著低于未获得HBsAg清除者([2.81 vs. 3.52]?log?IU/mL,P=0.009),HBeAg血清学清除后第1年时的HBsAg水平用于预测后来发生HBsAg血清学清除的最佳界值为751?IU/mL,受试者工作特征曲线下面积为0.742。
原文链接:Fung J, Wong DK, Seto WK, et al. Hepatitis B Surface Antigen Seroclearance: Relationship to Hepatitis B e-Antigen Seroclearance and Hepatitis B e-Antigen-Negative Hepatitis. Am J Gastroenterol. 2014 Sep 23.