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Effect of the clinical course of acute-on-chronic liver failure prior to liver transplantation on post-transplant survival

Published:October 25, 2019DOI:https://doi.org/10.1016/j.jhep.2019.10.013

      Highlights

      • Improvement of ACLF-3 prior to transplantation improves the probability of 1-year post-LT survival from 82.0% to 88.2%
      • Patients aged >60 years have a post-LT survival probability of 74.9% if transplanted with ACLF-3.
      • This post-LT survival probability rises to 82.7% if patients are transplanted with ACLF 0–2.
      • Improvement in brain and circulatory failure and removal from mechanical ventilation are associated with post-LT survival.

      Background & Aims

      Patients with acute-on-chronic liver failure (ACLF) can be listed for liver transplantation (LT) because LT is the only curative treatment option. We evaluated whether the clinical course of ACLF, particularly ACLF-3, between the time of listing and LT affects 1-year post-transplant survival.

      Methods

      We identified patients from the United Network for Organ Sharing database who were transplanted within 28 days of listing and categorized them by ACLF grade at waitlist registration and LT, according to the EASL-CLIF definition.

      Results

      A total of 3,636 patients listed with ACLF-3 underwent LT within 28 days. Among those transplanted, 892 (24.5%) recovered to no ACLF or ACLF grade 1 or 2 (ACLF 0–2) and 2,744 (75.5%) had ACLF-3 at transplantation. One-year survival was 82.0% among those transplanted with ACLF-3 vs. 88.2% among those improving to ACLF 0–2 (p <0.001). Conversely, the survival of patients listed with ACLF 0–2 who progressed to ACLF-3 at LT (n = 2,265) was significantly lower than that of recipients who remained at ACLF 0–2 (n = 17,631) at the time of LT (83.8% vs. 90.2%, p <0.001). Cox modeling demonstrated that recovery from ACLF-3 to ACLF 0–2 at LT was associated with reduced 1-year mortality after transplantation (hazard ratio 0.65; 95% CI 0.53–0.78). Improvement in circulatory failure, brain failure, and removal from mechanical ventilation were also associated with reduced post-LT mortality. Among patients >60 years of age, 1-year survival was significantly higher among those who improved from ACLF-3 to ACLF 0–2 than among those who did not.

      Conclusions

      Improvement from ACLF-3 at listing to ACLF 0–2 at transplantation enhances post-LT survival, particularly in those who recovered from circulatory or brain failure, or were removed from the mechanical ventilator. The beneficial effect of improved ACLF on post-LT survival was also observed among patients >60 years of age.

      Lay summary

      Liver transplantation (LT) for patients with acute-on-chronic liver failure grade 3 (ACLF-3) significantly improves survival, but 1-year survival probability after LT remains lower than the expected outcomes for transplant centers. Our study reveals that among patients transplanted within 28 days of waitlist registration, improvement of ACLF-3 at listing to a lower grade of ACLF at transplantation significantly enhances post-transplant survival, even among patients aged 60 years or older. Subgroup analysis further demonstrates that improvement in circulatory failure, brain failure, or removal from mechanical ventilation have the strongest impact on post-transplant survival.

      Graphical abstract

      Keywords

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