Clinical Scorecard: Survival After Preemptive Versus Nonpreemptive Kidney Transplantation
At a Glance
Category
Detail
Condition
Clinical topic addressed by the source article: Survival After Preemptive Versus Nonpreemptive Kidney Transplantation
Key Mechanisms
Preemptive transplantation occurs before dialysis; nonpreemptive transplantation follows a documented history of dialysis. The study used left-truncated Cox models and inverse probability of treatment weighting to address lead-time bias and baseline confounding; selection bias is a limitation of prior observational comparisons.
Target Population
Population described in the source article.
Care Setting
Care setting described in the source article.
Key Highlights
Preemptive transplantation is broadly advocated, but evidence for graft and patient survival has been mixed and observational.
The study used a target trial emulation framework with left-truncated Cox models and inverse probability of treatment weighting.
Time zero was the date eGFR first reached 20 mL/min/1.73 m² or below.
The primary outcome was all-cause mortality; secondary outcomes were all-cause graft failure, death-censored graft failure, and delayed graft function.
The supplied article excerpt describes the study design and outcomes but does not provide its results.
Guideline-Based Recommendations
Diagnosis
Management
KDIGO advises early referral for transplant evaluation and targets preemptive transplantation for living donor candidates.
The British Transplantation Society and European Renal Best Practices support programs designed to prevent dialysis initiation.
Monitoring & Follow-up
The registry records posttransplant follow-up at 6 months, 1 year, and annually thereafter until retransplantation, death, or loss to follow-up.
Delayed graft function was defined as dialysis within 7 days after transplantation or a serum creatinine decrease of less than 25% within 24 hours.
Risks
The article identifies selection bias, lead-time bias, and residual confounding as limitations affecting observational comparisons.
The article notes that prioritizing preemptive evaluations in resource-constrained settings may redirect capacity away from nonpreemptive candidates, raising concerns about equity in transplant access and timing.
Patient & Prescribing Data
Adults in the United States who received a first kidney-alone transplant during the study period, were listed while not receiving dialysis, and had a documented wait-time accrual date from January 1, 2005, through January 1, 2015.
Preemptive transplantation was defined as transplantation without any documented prior dialysis; any dialysis history before transplantation defined nonpreemptive transplantation. The excerpt provides no treatment-effect estimates or patient-level prescribing instructions.
Clinical Best Practices
KDIGO advises early referral for transplant evaluation, with preemptive transplantation targeted for living donor candidates.
The British Transplantation Society and European Renal Best Practices support programs designed to prevent dialysis initiation.
