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Categorization of drugs implicated in causing liver injury: Critical assessment based on published case reports

Björnsson, Einar S., Hoofnagle, Jay H.·2016·Hepatology

Abstract

An important element in assessing causality in drug‐induced liver injury is whether the implicated agent is known to cause hepatotoxicity. We classified drugs into categories based on the number of published reports of convincingly documented, clinically apparent, idiosyncratic liver injury. Drugs described in the website LiverTox (http://livertox.nih.gov) were classified into five categories based on the number of published cases (category A, ≥50; category B, 12‐49; category C, 4‐11; category D, 1‐3; category E, none). Case reports in categories C and D were individually reanalyzed using the Roussel Uclaf Causality Assessment Method. Drugs with fatal cases or with rechallenge were noted. Among 671 individual drugs or closely related agents, 353 (53%) were considered convincingly linked to liver injury in published case reports; 48 (13%) were assigned to category A, 76 (22%) were assigned to category B, 96 (27%) were assigned to category C, and 126 (36%) were assigned to category D. Another 7 (2%) were direct hepatotoxins but only in high doses and placed in a separate category (T). The remaining 318 (47%) drugs had no convincing case report of hepatoxicity in the literature (category E). All except one in category A have been available since 1999, 98% had at least one fatal case and 89% a positive rechallenge. In category B, 54% had a fatal case and 41% a rechallenge. Drugs in categories C and D less frequently had instances of fatal (23% and 7%) or rechallenge cases (26% and 11%). Conclusion : Documentation of hepatoxicity in the medical literature is variable, and many published instances do not stand up to critical review. A standardized system for categorizing drugs for hepatotoxicity potential will help develop objective and reliable, computer‐based instruments for assessing causality in drug‐induced liver injury. (H epatology 2016;63:590–603)

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Crossref · 10.1002/hep.28323

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  • The LiverTox database is known for inclusion of liver injury cases lacking robust CAMs and is therefore disputed.

    “Critical is also the data source of used cases, which were partially retrieved from the USA’s National Institutes of Health LiverTox database,67 known for inclusion of liver injury cases lacking robust CAMs and being therefore disputed.69–71”
  • Cases were also derived from the LiverTox database, with its published problems in assessing a correct causality in liver injury cases.

    “Cases were also derived from the LiverTox database,67 with its published problems in assessing a correct causality in liver injury cases.69–71”
  • LiverTox provides comprehensive data on the hepatotoxic risk assessment of over 1000 drugs and 60 HDS.

    “‘LiverTox’ is an open access authoritative website developed by Jay Hoofnagle, who was the driving force, with the support of various DILI experts (http://livertox.nih.gov), which provides comprehensive data on the hepatotoxic risk assessment of over 1000 drugs and 60 HDS”
  • The likelihood score describes the likelihood of a given drug being associated with DILI, ranging from A to E, based on the number of published cases; it is more accurate for extensively used drugs and less accurate for recently approved drugs and HDS.

    “Using this repository, Björnsson & Hoofnagle developed ‘The likelihood score’, that describes the likelihood of a given drug being associated with DILI, ranging from A to E. The score is based on the number of cases published in the literature, so it is more accurate for drugs that have been used extensively over a longer period, and less accurate for more recently approved drugs and HDS that have”

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Research works printed but not linked: 20

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Metadata

Authors
Björnsson, E. S., & Hoofnagle, J. H.
Affiliations
  • The National University Hospital of Iceland,Reykjavik,Iceland
  • Liver Disease Research Branch, Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases,National Institutes of Health,Bethesda,MD
Venue
Hepatology
Published
2015-12-21
Volume
63
Issue
2
Pages
590-603
ISSN
  • 0270-9139
  • 1527-3350
Cited by
245
References
1
Language
en

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