Open access
Review Article
19 December 2024

Liver injury in post-acute COVID-19 syndrome: A systematic review and meta-analysis of early observational studies

Publication: Canadian Liver Journal
Volume 7, Number 4

Abstract

Background:

Post-acute COVID-19 syndrome (PACS; long COVID) is characterized by persistent or delayed symptoms at least 4 weeks from acute COVID-19 infection. Given the well-documented incidence of liver injury in acute COVID-19, this systematic review aims to assess the odds of liver injury in earlier experiencers of PACS.

Methods:

Observational studies published prior to March 2022 were screened for data describing liver injury (defined per primary study) in patients with PACS.

Results:

A total of 2,117 abstracts and 35 full texts were screened, of which 26 met the inclusion criteria. The mean time since acute COVID infection across all studies was 195.5 days. Seven studies included COVID-negative control groups. Twenty-three studies measured lab findings, and nine studies measured imaging or elastography. Five studies were eligible for meta-analysis of odds ratios, which did not demonstrate a statistically significant difference in odds for liver injury in patients with PACS compared with COVID-negative patients (OR 2.22 [95% CI 0.51–9.61; p = 0.28]). Newcastle-Ottawa Scale assessments for all studies found 24 of 26 studies with high to very high risk of bias. ROBINS-E assessments for studies included in the meta-analysis found five of five studies with high to very high risk of bias.

Conclusions:

Overall, our findings demonstrate no statistical difference in odds ratios of liver injury in patients with PACS compared with COVID-negative controls. As such, routine assessment and monitoring of liver injury in patients with PACS may not be required; however, higher quality data with lower risk of bias are required to make recommendations of higher certainty.

Supplemental Material

canlivj-2024-0010_supplement1.pdf

Registry and the Registration No. of the Study/Trial:

The review protocol was registered on PROSPERO on March 30, 2022 (ID: CRD42022321890).

Funding:

N/A

Peer Review:

This manuscript was peer reviewed.

Animal Studies:

N/A

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Information & Authors

Information

Published In

Go to Canadian Liver Journal
Canadian Liver Journal
Volume 7Number 4December 2024
Pages: 470 - 489

History

Received: 11 March 2024
Accepted: 13 April 2024
Published online: 19 December 2024
Published in print: December 2024

Keywords:

  1. COVID-19
  2. hepatology
  3. liver injury
  4. long COVID
  5. PACS
  6. post-acute COVID-19 syndrome

Data Accessibility:

All data will be available free of charge upon request.

Authors

Affiliations

Paul Mundra, MD
1Department of Medicine, McMaster University, Hamilton, Ontario, Canada
Correspondence: Dr. Paul Mundra, Department of Medicine, McMaster University, 1280 Main St W McMaster University Health Sciences Centre, Room 1K11, Hamilton ON L8S 4K1. E-mail: [email protected]
Zeena Kailani, BSc
2Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
Mohammad Yaghoobi, MD, MSc
3Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
Priscilla Matthews, MD, FRCPC, MSc
4Department of Medicine, Queen's University, Kingston, Ontario, Canada
Matthew Tobis, MD
2Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
Shadi Sadeghian, MD
2Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
Siwar Albashir, MD, FRCPC
3Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada

Notes

Correspondence: Dr. Paul Mundra, Department of Medicine, McMaster University, 1280 Main St W McMaster University Health Sciences Centre, Room 1K11, Hamilton ON L8S 4K1. E-mail: [email protected]

Contributions:

Conceptualization, PS Mundra, S Albashir; Methodology, PS Mundra, S Albashir; Validation, PS Mundra; Formal Analysis, PS Mundra, M Yaghoobi; Investigation, PS Mundra, Z Kailani; Resources, PS Mundra, S Albashir; Data Curation, PS Mundra; Writing – Original Draft, PS Mundra, Z Kailani, P Matthews, M Tobis, S Sadeghian; Writing - Review & Editing, PS Mundra, Z Kailani, M Yaghoobi, P Matthews, M Tobis, S Sadeghian, S Albashir; Visualization, PS Mundra; Supervision, PS Mundra; Project Administration, PS Mundra.

Disclosures:

N/A

Ethics Approval:

N/A

Informed Consent:

N/A

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