Long-term virological outcome in chronic hepatitis B patients with a partial virological response to entecavir

BACKGROUND/AIMS: The clinical outcome of patients with a partial virological response (PVR) to entecavir (ETV), in particular nucloes(t)ide analogue (NA)-experienced patients, has not been thoroughly investigated. The aim of the present study was to assess long-term outcomes in NA-naive and NA-experienced chronic hepatitis B patients with a PVR to ETV. METHODS: Chronic hepatitis B patients treated with ETV (0.5 mg/day) for at least 1 year were enrolled retrospectively. PVR was defined as a decrease in hepatitis B virus (HBV) DNA titer of more than 2 log10 IU/mL, yet with residual serum HBV DNA, as determined by real time-polymerase chain reaction, at week 48 of ETV therapy. RESULTS: A total of 202 patients (127 NA-naive and 75 NA-experienced, male 70.8%, antigen positive 53.2%, baseline serum HBV DNA 6.2 +/- 1.5 log10 IU/mL) were analyzed. Twenty-eight patients demonstrated a PVR. The PVR was associated with a high serum HBV DNA titer at baseline and at week 24. Virological response (< 60 IU/mL) was achieved in 46.2%, 61.5%, 77.6%, and 85% of patients with PVR at week 72, 96, 144, and 192, respectively. Resistance to antivirals developed in two NA-experienced patients. Failure of virological response (VR) in patients with PVR was associated with high levels of serum HBV DNA at week 48. CONCLUSIONS: Patients with PVR to ETV had favorable long-term virological outcomes. The low serum level of HBV DNA (< 200 IU/mL) at week 48 was associated with subsequent development of a VR in patients with PVR to ETV.

A Case of Autoimmune Hepatitis Following Acute Hepatitis A / 대한소화기학회지

The pathogenesis of autoimmune hepatitis (AIH) is unclear, but viral infections have been proposed as a potential trigger in patients with genetic predisposition. We report a case of AIH following acute hepatitis A (AHA). A 57-year-old woman presented with fatigue and pitting edema for last 3 months. She had been diagnosed as an AHA 15 months ago based on clinical features, biochemical tests and positive HAV IgM antibody at a local clinic. Her biochemical tests was normalized one month after AHA diagnosis, but the serum levels of aminotransferase started to rise four months after AHA diagnosis. Antinuclear antibody was positive at a titer of 1:40, and anti-smooth muscle antibody was also positive. Hypergammaglobulinemia and liver pathology were typical for AIH. The patients had a score of 17 according to the International Autoimmune Hepatitis Group's system. She was given prednisolone and azathioprine and showed complete response to immunosuppressive therapy. The present case is the first report on AIH triggered by AHA in Korea.

The etiology of acute viral hepatitis for the last 3 years / 대한내과학회지

BACKGROUND: In Korea, the most common cause of acute viral hepatitis used to be the hepatitis B virus, but now the etiology of acute viral hepatitis seems to be changing. We investigated the etiology of newly developed acute viral hepatitis for the last 3 years. METHODS: We retrospectively reviewed the medical records of patients, who visited Asan Medical Center for jaundice during recent 3 years. Among them, one hundred eighty six patients were diagnosed as acute viral hepatitis by typical clinical feature and positive results in any one of the following tests: IgM anti-HAV, IgM anti-HBc, HCV PCR, and IgM anti-HEV. RESULTS: The proportion of acute viral hepatitis A, B, C, and E were 49.5% (n=92), 45.2% (n=84), 3.8% (n=7), and 1.6% (n=3), respectively. The patients' age of acute hepatitis A (29.1 +/- 1.75 years) was significantly younger than that of acute hepatitis B (38.2 +/- 3.07 years) (p<0.001). There were 10 cases of fulminant hepatic failure, all of which were caused by hepatitis B virus. Of seven patients diagnosed as acute hepatitis C, three patients were treated with interferon-alpha and ribavirin, and all achieved sustained virologic response. Three patients, who were diagnosed as acute hepatitis E, recovered spontaneously. CONCLUSION: Nowadays, the most common causes of acute viral hepatitis in Korea are in the order of the hepatitis A virus and the hepatitis B virus. The most prevalent age of acute hepatitis A is the 20th, while acute hepatitis B is most common in the 30th. Although the acute hepatitis C and E seems to be rare, they do occur sporadically in Korea.