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Updated: Jun 26, 2026

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
Published on: January 31, 2022
Drug-Induced Liver Injury Network (DILIN) prospective study: rationale, design and conduct
Robert J Fontana1, Paul B Watkins, Herbert L Bonkovsky
1Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109-0362, USA. rfontana@med.umich.edu
Background:
Drug-induced liver injury (DILI) is an uncommon adverse drug reaction of increasing importance to the medical community, pharmaceutical industry, regulatory agencies and the general public.
Objectives:
The Drug-Induced Liver Injury Network (DILIN) was established to advance understanding and research into DILI by initiating a prospective registry of patients with bona fide DILI for future studies of host clinical, genetic, environmental and immunological risk factors. The DILIN was also charged with developing standardized nomenclature, terminology and causality assessment instruments.
Methods:
Five clinical sites, a data coordinating centre and senior scientists from the National Institute of Diabetes and Digestive and Kidney Diseases initiated the DILIN prospective study in September 2004. Eligible patients are required to meet minimal laboratory or histological criteria within 6 months of DILI onset and have other competing causes of liver injury excluded. Patients in the general community setting with pre-existing HIV, hepatitis B virus or hepatitis C virus infections and/or abnormal baseline liver biochemistries are eligible for enrollment. In addition, subjects with liver injury due to herbal products are eligible to participate. Control patients without DILI are also to be recruited in the future.
Results:
All referred subjects undergo an extensive review of available laboratory, pathology and imaging studies. Subjects who meet pre-defined eligibility criteria at the 6-month study visit are followed for 2 years to better define the natural history of chronic DILI. Causality assessment is determined by a panel of three hepatologists who independently assign a causality score ranging from 1 (definite) to 5 (unlikely) as well as a severity score ranging from 1 (mild) to 5 (fatal). During the first 3 years, 367 subjects were enrolled into the DILIN prospective study.
Conclusion:
DILIN is a multicentre research network charged with improving our understanding of the aetiologies, risk factors and outcomes of DILI in the US. The network is meeting the targeted enrollment of ten patients per month and is developing a repository of clinical data and biological samples for future studies of DILI pathogenesis and outcome.
Insights
The Drug-Induced Liver Injury Network (DILIN) established a prospective registry to study risk factors and outcomes of drug-induced liver injury (DILI). This network aims to improve understanding of DILI causes and progression.
Area of Science:
- Hepatology
- Clinical Pharmacology
- Toxicology
Background:
- Drug-induced liver injury (DILI) is an increasingly significant adverse drug reaction.
- Understanding DILI is crucial for the medical community, pharmaceutical industry, and regulatory bodies.
Purpose of the Study:
- Establish the Drug-Induced Liver Injury Network (DILIN) for DILI research.
- Create a prospective patient registry to investigate host risk factors (clinical, genetic, environmental, immunological).
- Develop standardized nomenclature, terminology, and causality assessment tools for DILI.
Main Methods:
- Initiated a prospective DILI study across five clinical sites and a data coordinating center in September 2004.
- Enrolled eligible patients meeting specific laboratory or histological criteria within 6 months of DILI onset, excluding other causes of liver injury.
- Included patients with HIV, hepatitis B/C, abnormal baseline liver biochemistries, or liver injury from herbal products; control patients to be recruited.
Main Results:
- Conducted extensive reviews of laboratory, pathology, and imaging studies for enrolled subjects.
- Followed eligible subjects for 2 years to define the natural history of chronic DILI.
- Assessed causality and severity of DILI using a panel of three hepatologists; 367 subjects enrolled in the first 3 years.
Conclusions:
- DILIN is a US-based multicenter network enhancing DILI knowledge.
- The network is achieving enrollment targets and building a data and sample repository for future DILI pathogenesis and outcome studies.
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