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Updated: May 26, 2026

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Published on: November 27, 2019
Molecular adsorbent recirculating system as artificial support therapy for liver failure: a meta-analysis
Arjun Vaid1, Haval Chweich, Ethan M Balk
1Department of Medicine, St. Elizabeth's Medical Center, Boston, Massachusetts 02135, USA. arjun.vaid@steward.org
The Molecular Adsorbent Recirculating System (MARS) significantly improves bilirubin levels and hepatic encephalopathy in liver failure patients. However, this artificial liver support system does not impact overall survival rates.
Area of Science:
- Hepatology
- Artificial Organ Support
- Critical Care Medicine
Background:
- Liver failure necessitates advanced support systems.
- The Molecular Adsorbent Recirculating System (MARS) offers a potential solution for liver support.
- Efficacy of MARS requires rigorous evaluation.
Purpose of the Study:
- To meta-analyze the efficacy of the Molecular Adsorbent Recirculating System (MARS).
- To assess MARS impact on bilirubin levels, hepatic encephalopathy, and mortality in liver failure.
- To evaluate MARS as a bridge therapy or temporary support.
Main Methods:
- Systematic search of MEDLINE, EMBASE, and Cochrane Registry.
- Inclusion of randomized and non-randomized controlled trials comparing MARS to standard medical therapy.
- Meta-analysis of outcomes including total bilirubin, hepatic encephalopathy grade, and mortality.
Main Results:
- MARS significantly decreased total bilirubin levels (net change -7.0 mg/dl).
- MARS demonstrated significant improvement in hepatic encephalopathy (OR 3.0).
- No significant beneficial effect of MARS on patient mortality was observed (OR 0.91).
Conclusions:
- MARS shows promise in improving key biochemical and neurological markers of liver failure.
- Current evidence does not support MARS for improving survival in liver failure patients.
- Further large-scale studies are needed to ascertain patient-centered outcomes with MARS therapy.
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