Anstee QM, Targher G, Day CP Progression of NAFLD to diabetes mellitus, cardiovascular disease or cirrhosis. Nat Rev Gastroenterol Hepatol. 2013 Jun;10(6):330-44. doi: 10.1038/nrgastro.2013.41. Epub 2013 Mar 19. Review.
Baffy G, Brunt EM, Caldwell SH Hepatocellular carcinoma in non-alcoholic fatty liver disease: an emerging menace. J Hepatol. 2012 Jun;56(6):1384-91. doi: 10.1016/j.jhep.2011.10.027. Epub 2012 Feb 9. Review.
Baranova A, Younossi ZM The future is around the corner: Noninvasive diagnosis of progressive nonalcoholic steatohepatitis. Hepatology. 2008 Feb;47(2):373-5. doi: 10.1002/hep.22140.
Cotter TG, Rinella M Nonalcoholic Fatty Liver Disease 2020: The State of the Disease. Gastroenterology. 2020 May;158(7):1851-1864. doi: 10.1053/j.gastro.2020.01.052. Epub 2020 Feb 13.
Malhi H Emerging role of extracellular vesicles in liver diseases. Am J Physiol Gastrointest Liver Physiol. 2019 Nov 1;317(5):G739-G749. doi: 10.1152/ajpgi.00183.2019. Epub 2019 Sep 23. Review.
Pu K, Wang Y, Bai S, Wei H, Zhou Y, Fan J, Qiao L Diagnostic accuracy of controlled attenuation parameter (CAP) as a non-invasive test for steatosis in suspected non-alcoholic fatty liver disease: a systematic review and meta-analysis. BMC Gastroenterol. 2019 Apr 8;19(1):51. doi: 10.1186/s12876-019-0961-9.
Than NN, Newsome PN A concise review of non-alcoholic fatty liver disease. Atherosclerosis. 2015 Mar;239(1):192-202. doi: 10.1016/j.atherosclerosis.2015.01.001. Epub 2015 Jan 13. Review.
Xiao G, Zhu S, Xiao X, Yan L, Yang J, Wu G Comparison of laboratory tests, ultrasound, or magnetic resonance elastography to detect fibrosis in patients with nonalcoholic fatty liver disease: A meta-analysis. Hepatology. 2017 Nov;66(5):1486-1501. doi: 10.1002/hep.29302. Epub 2017 Sep 26. Review.
Younossi ZM, Koenig AB, Abdelatif D, Fazel Y, Henry L, Wymer M Global epidemiology of nonalcoholic fatty liver disease-Meta-analytic assessment of prevalence, incidence, and outcomes. Hepatology. 2016 Jul;64(1):73-84. doi: 10.1002/hep.28431. Epub 2016 Feb 22. Review.
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.
