ArticleAmerican journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons2023
Increased volume of organ offers and decreased efficiency of kidney placement under circle-based kidney allocation.
Article in American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
34 citing papers in PubMed, 51 citations in OpenAlex.
- Characterizing Within-Center Placement of Out-of-Sequence Deceased-Donor Kidney Transplants.Kidney international reports · 2026Article
- Newly Designed Expedited Allocation Pathways Cannot Be Expected to Rely on Data That Do Not Currently Exist.Kidney360 · 2026Article
- Kidney Transplant Candidates With High Frequency Deceased Donor Offers.Kidney international reports · 2026Article
- Recipient Selection and Outcomes After Out-of-Sequence Kidney Allocation Since Implementation of Kidney Allocation System 250 (KAS250): A Single-Center Experience.Clinical transplantation · 2026Article
- Impact of Cold Ischemia Time on Allograft Survival and Policy.Kidney international reports · 2026Article
- Article
- Article
- Outcomes of Deceased Donor Kidney Transplants Allocated Out of Sequence in the United States.Clinical journal of the American Society of Nephrology : CJASN · 2026Observational
- Expedited Kidney Offers Are Occurring Earlier During Allocation.Kidney medicine · 2026Article
- Machine Learning Predictions for Assessing Hard-to-Place Deceased Donor Kidneys.Kidney medicine · 2026Article
- Expedited Transplant Allocation Using a Paired Kidney Cohort.JAMA network open · 2026Article
- How Far Is a Kidney Willing to Go? Kidney Transplant Outcomes Based on Distance Donor Kidney Travels to Transplant Centers.Kidney medicine · 2026Article
- Out-of-Sequence Placement of Deceased Donor Kidneys Is Exacerbating Inequities in the United States.Clinical journal of the American Society of Nephrology : CJASN · 2026Article
- The impact of simultaneous batch turn downs and targeted kidney utilization decisions on patient survival.PloS one · 2026Article
- Cryopreservation Strategies to Improve Access to Organ Transplantation.Transplantation · 2026Review
- Acceptance of High Kidney Donor Profile Index Kidneys Among Consented Candidates.Kidney international reports · 2025Article
- Decreasing efficiency in deceased donor kidney offer notifications under the new distance-based kidney allocation system.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2025Article
- Underrecognition of deceased donor kidney out-of-sequence allocation due to increasing use of free-text coding.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2025Article
- Association between out-of-sequence allocation and deceased donor kidney nonuse across organ procurement organizations.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2025Article
- Adopting orphan deceased donor kidneys for transplantation.BMC nephrology · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 3 institutions in 1 country.
Funding
Abstract
The newest kidney allocation policy kidney allocation system 250 (KAS250) broadened geographic distribution while increasing allocation system complexity. We studied the volume of kidney offers received by transplant centers and the efficiency of kidney placement since KAS250. We identified deceased-donor kidney offers (N = 907,848; N = 36,226 donors) to 185 US transplant centers from January 1, 2019, to December 31, 2021 (policy implemented March 15, 2021). Each unique donor offered to a center was considered a single offer. We compared the monthly volume of offers received by centers and the number of centers offered before the first acceptance using an interrupted time series approach (pre-/post-KAS250). Post-KAS250, transplant centers received more kidney offers (level change: 32.5 offers/center/mo, P < .001; slope change: 3.9 offers/center/mo, P = .003). The median monthly offer volume post-/pre-KAS250 was 195 (interquartile range 137-253) vs. 115 (76-151). There was no significant increase in deceased-donor transplant volume at the center level after KAS250, and center-specific changes in offer volume did not correlate with changes in transplant volume (r = -0.001). Post-KAS250, the number of centers to whom a kidney was offered before acceptance increased significantly (level change: 1.7 centers/donor, P < .001; slope change: 0.1 centers/donor/mo, P = .014). These findings demonstrate the logistical burden of broader organ sharing, and future allocation policy changes will need to balance equity in transplant access with the operational efficiency of the allocation system.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.