Occult HBV infection is defined as the presence of HBV DNA in the liver (with or without detectable or undetectable HBV DNA in the serum) of individuals testing negative for HBsAg. Studies on occult HBV infection in hepatitis C patients have reported highly variable prevalence, because the prevalence of occult HBV infection varies depending on the hepatitis B risk factors and methodological approaches. The most reliable diagnostic approach for detecting occult HBV detection is through examination of liver DNA extracts. HCV has been suspected to strongly suppress HBV replication up to the point where it may be directly responsible for occult HBV infection development. However, more data are needed to arrive at a definitive conclusion regarding the role of HCV in inducing occult HBV infection. Occult HBV infection in chronic hepatitis C patients is a complex biological entity with possible relevant clinical implications. Influence of occult HBV infection on the clinical outcomes of chronic hepatitis C may be considered negative. However, recent studies have shown that occult HBV infection could be associated with the development of hepatocellular carcinoma and contribute to the worsening of the course of chronic liver disease over time in chronic hepatitis C patients. Nevertheless, the possible role of occult HBV infection in chronic hepatitis C is still unresolved and no firm conclusion has been made up until now. It still remains unclear how occult HBV infection affects the treatment of chronic hepatitis C. Therefore, in order to resolve current controversies and understand the pathogenic role and clinical impacts of occult HBV infection in chronic hepatitis C patients, well-designed clinical studies are needed.
Carcinoma, Hepatocellular/complications ; DNA, Viral/analysis ; Hepacivirus/genetics ; Hepatitis B/*complications/*diagnosis/drug therapy ; Hepatitis B virus/genetics ; Hepatitis C, Chronic/*complications/*diagnosis/drug therapy ; Humans ; Interferon-alpha/therapeutic use ; Liver/virology ; Liver Neoplasms/complications

Hepatitis C virus (HCV) is one of the main viral causes of hepatocellular carcinoma (HCC) and is associated with lymphoproliferative disorder such as non-Hodgkin's lymphoma (NHL). However, there are only few case reports on concomitantly induced NHL and HCC by HCV. Herein, we report a case of synchronous NHL and HCC in a patient with chronic hepatitis C which was unexpectedly diagnosed during liver transplantation surgery. This case suggests that although intrahepatic lymph node enlargements are often considered as reactive or metastatic lymphadenopathy in chronic hepatitis C patients with HCC, NHL should also be considered as a differential diagnosis.
Antineoplastic Agents/therapeutic use ; Carcinoma, Hepatocellular/complications/*diagnosis/radiotherapy ; Drug Therapy, Combination ; Embolization, Therapeutic ; Fluorodeoxyglucose F18 ; Gadolinium DTPA ; Genotype ; Hepatitis B virus/genetics ; Hepatitis C, Chronic/complications/*diagnosis/*virology ; Humans ; Liver Neoplasms/complications/*diagnosis/radiotherapy ; Lymph Nodes/pathology ; Lymphoma, Non-Hodgkin/complications/*diagnosis/drug therapy ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Positron-Emission Tomography ; Tomography, X-Ray Computed

No abstract available.
Drug Therapy, Combination ; Hepacivirus ; Hepatitis C, Chronic/complications/*diagnosis/therapy ; Humans ; Interferon Alfa-2a/therapeutic use ; Liver Cirrhosis/*diagnosis/mortality/virology ; *Liver Transplantation ; Living Donors ; Polyethylene Glycols/therapeutic use ; Ribavirin/therapeutic use ; Severity of Illness Index ; Treatment Outcome

BACKGROUND/AIMS: The previous standard treatment for chronic hepatitis C (CHC) patients, comprising a combination of pegylated interferon (IFN) and ribavirin, was associated with suboptimal efficacy and severe adverse reactions. A new era of direct-acting antivirals is now dawning in Korea. Early experience of applying sofosbuvir-based therapy to CHC patients in Korea is reported herein. METHODS: Data on efficacy and safety were collected for CHC patients treated with a combination of sofosbuvir plus ribavirin or sofosbuvir/ledipasvir with or without ribavirin. RESULTS: This retrospective study included 25 consecutive patients who received sofosbuvir-based therapy (19 with genotype 1b and 6 with genotype 2) at Seoul National University Hospital from May 2014 to April 2015. A virologic response was achieved at week 4 by 85.7% and 80% of the patients with genotypes 1b and 2, respectively. The HCV-RNA level decreased more slowly in IFN-experienced than in treatment-naive patients with genotype 1b. However, the sustained virologic response at week 12 (SVR12) rate did not differ among these patients, and was as high as 100%. The presence of cirrhosis significantly increased the risk of a virologic response failure at week 4 (OR, 11.0; P=0.011) among patients with HCV genotype 1b. Only five patients (20%) experienced minor adverse events, including grade 1 fatigue and headache. The hemoglobin level decreased slightly after sofosbuvir-based therapy, but there was no case of premature discontinuation of this therapy. CONCLUSIONS: In a real clinical practice, sofosbuvir-based therapy for CHC patients in Korea achieved optimal antiviral efficacy with insignificant adverse events. Long-term follow-up data are warranted to ensure the sustained antiviral efficacy and long-term safety of sofosbuvir-based IFN-free therapy.
Adult ; Aged ; Aged, 80 and over ; Antiviral Agents/adverse effects/*therapeutic use ; Drug Therapy, Combination ; Fatigue/etiology ; Female ; Genotype ; Headache/etiology ; Hemoglobins/analysis ; Hepacivirus/genetics ; Hepatitis C, Chronic/complications/*drug therapy/virology ; Humans ; Liver Cirrhosis/complications/diagnosis ; Male ; Middle Aged ; RNA, Viral/blood ; Republic of Korea ; Retrospective Studies ; Ribavirin/therapeutic use ; Sofosbuvir/adverse effects/*therapeutic use ; Treatment Outcome

Variceal bleeding and hepatorenal syndrome (HRS) are serious and life-threatening complications of advanced liver disease. Terlipressin is widely used to manage both acute variceal bleeding and HRS due to its potency and long duration of action. The most severe (though rare) adverse event is ischemia. The present report describes the case of a patient with gangrene and osteomyelitis secondary to terlipressin therapy. A 71-year-old male with alcoholic liver cirrhosis (Child-Pugh B) and chronic hepatitis C was admitted due to a drowsy mental status. The patient had several experiences of orthopedic surgery. His creatinine level had gradually elevated to 4.02 mg/dL, and his urine output decreased to 500 mL/24 hr. The patient was diagnosed as having grade III hepatic encephalopathy (HE) and type II HRS. Terlipressin and albumin were administered intravenously to treat the HRS over 11 days. Although he recovered from the HE and HRS, the patient developed peripheral gangrene and osteomyelitis in both feet. His right toes were cured with the aid of rescue therapy, but his left three toes had to be amputated. Peripheral gangrene and osteomyelitis secondary to terlipressin therapy occur only rarely, and there is no specific rescue therapy for these conditions. Thus, attention should be paid to the possibility of ischemia of the skin and bone during or after terlipressin therapy.
Aged ; Creatinine/blood ; Foot/pathology ; Gangrene/*etiology ; Hepatitis C, Chronic/complications ; Humans ; Liver Cirrhosis/complications/diagnosis ; Liver Diseases/*diagnosis/drug therapy ; Lypressin/adverse effects/*analogs & derivatives/therapeutic use ; Male ; Osteomyelitis/*etiology ; Severity of Illness Index ; Toe Phalanges/radiography ; Vasoconstrictor Agents/*adverse effects/therapeutic use

BACKGROUND AND AIMS: Hepatitis C virus (HCV)-associated cirrhosis is an increasingly frequent indication for liver transplantation (LT). However, HCV recurrence is universal and this immediately occurs following LT, which endangers both the graft and patient survival. We investigated the frequency of posttransplant recurrence of HCV infection and the patient-graft survival, and we analyzed the responses to ribavirin and interferon therapy in the patients with recurrent HCV infection after living donor liver transplantation (LDLT). METHODS: We retrospectively reviewed the clinical outcomes of 39 HCV-associated cirrhosis patients who underwent LDLT at Asan Medical Center between August 1992 and June 2006. In this study, the diagnosis of recurrent HCV was made on the basis of increased transaminases and serum HCV RNA levels greater than 10 million IU/mL because protocol liver biopsy was not performed. RESULTS: HCV recurrence was seen in 26 of the 39 LDLT patients (66.7%). 86.7% of recurrence occurred within the first postoperative year. Antiviral treatment was used for all patients with recurrence of HCV. None of the 10 patients receiving ribavirin alone and 9 of 16 patients who received combination therapy with pegylated interferon alpha-2a plus ribavirin became HCV RNA negative and they remained persistently negative during the median follow-up of 24.9 months. Our data indicates that there is no significant factor influencing HCV recurrence except for the recipient's age. The 2-year patient survival for the HCV patients with HCC and those patients without HCC were 81.2% and 81.3%, respectively (P=0.85) and the 2-year graft survival rates were 81.2% and 68.2%, respectively (P=0.29). No patient died from HCV recurrence during the follow-up period. CONCLUSIONS: Combination therapy with ribavirin and interferon appears to improve the outcome of recurrent HCV infected patients after LDLT.
Adult ; Aged ; Antiviral Agents/therapeutic use ; Combined Modality Therapy ; Female ; Graft Survival ; Hepacivirus/drug effects/isolation & purification ; Hepatitis C, Chronic/complications/diagnosis/*drug therapy ; Humans ; Interferon Alfa-2a/therapeutic use ; Liver Cirrhosis/mortality/*surgery/*virology ; Liver Neoplasms/mortality ; *Liver Transplantation ; Living Donors ; Male ; Middle Aged ; Polyethylene Glycols/therapeutic use ; Recurrence ; Retrospective Studies ; Ribavirin/therapeutic use ; Severity of Illness Index ; Treatment Outcome

BACKGROUND/AIMS: Pegylated interferon (peginterferon) and ribavirin combination therapy is less effective and associated with a higher frequency of serious complications in chronic hepatitis C patients with cirrhosis than in noncirrhotic patients. This study evaluated the efficacy and tolerability of peginterferon and ribavirin treatment in patients with hepatitis C virus (HCV)-related cirrhosis. METHODS: Eighty-six patients with clinically diagnosed liver cirrhosis were treated with either peginterferon alpha-2a (n=51) or peginterferon alpha-2b (n=35) plus ribavirin. The sustained virologic response (SVR) and adverse effects were analyzed retrospectively. RESULTS: Of the 86 patients (55 males), 48 patients (55.8%) had HCV genotype 1 infection and 38 (44.2%) had genotype non-1 infection. The overall SVR rate was 34.9% (30/86), and the rates of SVR in the genotype 1 and non-1 patients were 20.8% (10/48) and 52.6% (20/38), respectively. The multivariate analysis revealed that having HCV genotype 1 (P=0.003) and high baseline viral load (>8.0x10(5) IU/mL, P=0.012) were the independent predictive factors for SVR failure. In 20.9% (18/86) of the patients, treatment was not completed due to adverse events (27.8%), loss to follow-up (50.0%), and other reasons (22.2%). CONCLUSIONS: Peginterferon and ribavirin combination therapy was relatively effective and feasible for clinically diagnosed HCV patients, especially in those with genotype non-1 infection and low baseline viral load.
Adult ; Aged ; Antiviral Agents/*therapeutic use ; Drug Therapy, Combination ; Female ; Genotype ; Hepacivirus/*genetics ; Hepatitis C, Chronic/complications/*drug therapy/virology ; Humans ; Interferon-alpha/*therapeutic use ; Liver Cirrhosis/*diagnosis/etiology/virology ; Male ; Middle Aged ; Polyethylene Glycols/*therapeutic use ; RNA, Viral/blood ; Recombinant Proteins/therapeutic use ; Retrospective Studies ; Ribavirin/*therapeutic use ; Viral Load

A 63-year-old male experienced sudden diplopia after 9 weeks of administration of pegylated interferon (IFN) alpha-2b and ribavirin for chronic hepatitis C (CHC). Ophthalmologic examinations showed ptosis on the right upper lid and restricted right eye movement without any other neurological signs. A brain imaging study and repetitive nerve stimulation test indicated no abnormality. The acetylcholine receptor antibody titer and response to acetylcholinesterase inhibitors were negative, and the results of thyroid function tests were normal. The patient's ophthalmological symptoms improved rapidly 3 weeks after discontinuation of pegylated IFN alpha-2b and ribavirin. The ocular myasthenia associated with combination therapy of pegylated IFN alpha-2b and ribavirin for CHC is very rarely reported; therefore, we present this case with a review of the various eye complications of IFN therapy.
Antiviral Agents/*adverse effects/therapeutic use ; Drug Therapy, Combination ; Hepatitis C, Chronic/complications/*drug therapy ; Humans ; Interferon Alfa-2b/*adverse effects/therapeutic use ; Male ; Middle Aged ; Myasthenia Gravis/*chemically induced/*diagnosis ; Polyethylene Glycols/*adverse effects/therapeutic use ; Ribavirin/*adverse effects/therapeutic use

BACKGROUND/AIMS: The distribution of hepatitis C virus (HCV) genotypes varies geographically. In Korea, genotypes 1 and 2 comprise more than 90% of HCV infections, while genotype 6 is very rare. This study compared the clinical and epidemiological characteristics of patients with genotype 6 HCV infection with those infected with HCV genotypes 1 and 2. METHODS: This was a prospective, multicenter HCV cohort study that enrolled 1,173 adult patients, of which 930 underwent HCV genotype analysis, and only 9 (1.0%) were found to be infected with genotype 6 HCV. The clinical and epidemiological parameters of the genotypes were compared. RESULTS: The patients with genotype 6 HCV had a mean age of 41.5 years, 77.8% were male, and they had no distinct laboratory features. A sustained virologic response (SVR) was observed in four (67%) of six patients who received antiviral therapy. Risk factors such as the presence of a tattoo (n=6, 66.7%), more than three sexual partners (n=3, 33.3%), and injection drug use (n=3, 33.3%) were more common among genotype 6 patients than among genotypes 1 or 2. CONCLUSIONS: The epidemiology and treatment response of patients infected with genotype 6 HCV differed significantly from those with genotypes 1 or 2, warranting continuous monitoring.
Adult ; Antiviral Agents/therapeutic use ; Asian Continental Ancestry Group ; Cohort Studies ; Female ; Genotype ; Hepacivirus/*genetics ; Hepatitis C, Chronic/*diagnosis/drug therapy/epidemiology ; Humans ; Liver/pathology ; Male ; Middle Aged ; Prospective Studies ; RNA, Viral/blood ; Republic of Korea ; Risk Factors ; Sexual Behavior ; Substance-Related Disorders/complications ; Tattooing