HCC — Predictive Value of HBV pgRNA on Long-term Outcomes in Hepatitis B Patients Treated With Antiviral Therapy
Citation(s)
Chinese Society of Hepatology,Chinese Medical Association [Chinese guidelines on the management of liver cirrhosis]. Zhonghua Gan Zang Bing Za Zhi. 2019 Nov 20;27(11):846-865. doi: 10.3760/cma.j.issn.1007-3418.2019.11.008. Chinese.
European Association for the Study of the Liver Electronic address: easloffice@easloffice.eu; European Association for the Study of the Liver. EASL 2017 Clinical Practice Guidelines on the management of hepatitis B virus infection. J Hepatol. 2017 Aug;67(2):370-398. doi: 10.1016/j.jhep.2017.03.021. Epub 2017 Apr 18.
Jansen L, Kootstra NA, van Dort KA, Takkenberg RB, Reesink HW, Zaaijer HL Hepatitis B Virus Pregenomic RNA Is Present in Virions in Plasma and Is Associated With a Response to Pegylated Interferon Alfa-2a and Nucleos(t)ide Analogues. J Infect Dis. 2016 Jan 15;213(2):224-32. doi: 10.1093/infdis/jiv397. Epub 2015 Jul 27.
Jung MC, Pape GR Immunology of hepatitis B infection. Lancet Infect Dis. 2002 Jan;2(1):43-50. doi: 10.1016/s1473-3099(01)00172-4.
Lim TH, Gane E, Moyes C, Borman B, Cunningham C HBsAg loss in a New Zealand community study with 28-year follow-up: rates, predictors and long-term outcomes. Hepatol Int. 2016 Sep;10(5):829-37. doi: 10.1007/s12072-016-9709-6. Epub 2016 Mar 8.
Nassal M HBV cccDNA: viral persistence reservoir and key obstacle for a cure of chronic hepatitis B. Gut. 2015 Dec;64(12):1972-84. doi: 10.1136/gutjnl-2015-309809. Epub 2015 Jun 5.
Schweitzer A, Horn J, Mikolajczyk RT, Krause G, Ott JJ Estimations of worldwide prevalence of chronic hepatitis B virus infection: a systematic review of data published between 1965 and 2013. Lancet. 2015 Oct 17;386(10003):1546-55. doi: 10.1016/S0140-6736(15)61412-X. Epub 2015 Jul 28.
Tang LSY, Covert E, Wilson E, Kottilil S Chronic Hepatitis B Infection: A Review. JAMA. 2018 May 1;319(17):1802-1813. doi: 10.1001/jama.2018.3795. Erratum In: JAMA. 2018 Sep 18;320(11):1202.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.