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  • Title: Effects of the implementation of acuity circle policy on waitlist and post-transplant outcomes of liver re-transplantation.
    Author: Shimada S, Shamaa T, Ivanics T, Miyake K, Kitajima T, Rizzari M, Yoshida A, Abouljoud M, Moonka D, Nagai S.
    Journal: Clin Transplant; 2023 Jun; 37(6):e14977. PubMed ID: 36951511.
    Abstract:
    BACKGROUND: Acuity circle (AC) policy implementation improved the waitlist outcomes for certain liver transplant (LT)-candidates. The impact of the policy implementation for liver retransplant (reLT) candidates is unknown. METHODS: Using Organ Procurement and Transplantation Network/United Network for Organ Sharing (OPTN/UNOS) data from January, 2018 to September, 2021, we investigated the effect of the AC policy on waitlist and post-LT outcomes among patients who had previously received a LT. Patients were categorized by relisting date: Pre-AC (Era 1: January 1, 2018-February 3, 2020; n = 750); and Post-AC (Era 2: February 4, 2020-June 30, 2021; n = 556). Patient and donor characteristics, as well as on-waitlist and post-reLT outcomes were compared across eras. RESULTS: In Era 2, the probability of transplant within 90 days overall and among patients relisted > 14 days from initial transplant (late relisting) were significantly higher compared to Era 1 (subdistribution hazard ratio [sHR] 1.40, 95% CI 1.18-1.64, p < .001; sHR 1.52, 95% CI 1.23-1.88, p = .001, respectively). However, there was no difference by era among patients relisted ≤14 days from initial transplant (early relisting; sHR 1.21, 95% CI .93-1.57, p = .15). Likewise, among early relisting patients, risks for 180-day graft loss and mortality were significantly higher in Era 2 versus Era 1 (adjusted hazard ratio [aHR] 5.77, 95% CI 1.71-19.51, p = .004; and aHR 8.22, 95% CI 1.85-36.59, p = .005, respectively); for late relisting patients, risks for these outcomes were similar across eras. CONCLUSION: Our results show that the implementation of AC policy has improved transplant rates and reduced waiting time for reLT candidates listed > 14 days from initial transplant. However, the impact upon early relisting patients may be mixed.
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