Trial reportJournal of clinical oncology : official journal of the American Society of Clinical Oncology2021
Phase II Trial of Costimulation Blockade With Abatacept for Prevention of Acute GVHD.
Trial report in Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 152 papers, 3 of them syntheses that pooled it.
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
152 citing papers in PubMed, 3 syntheses or guidelines pooled it, 237 citations in OpenAlex.
- HLA matching in contemporary haematopoietic cell transplantation: Recommendations from the EBMT Practice Harmonisation and Guidelines Committee.Bone marrow transplantation · 2026Guideline
- Efficacy and safety of ruxolitinib for graft-versus-host disease prophylaxis in allogeneic hematopoietic stem cell transplantation: a systematic review and meta-analysis.Frontiers in medicine · 2025Pooled it
- Outcomes with mismatched unrelated donor allogeneic hematopoietic stem cell transplantation in adults: A systematic review and meta-analysis.Frontiers in oncology · 2022Pooled it
- A prospective clinical trial of GVHD prophylaxis with posttransplant cyclophosphamide and abatacept.Blood advances · 2025Trial
- Posttransplant cyclophosphamide as GVHD prophylaxis in patients receiving mismatched unrelated HCT: the PHYLOS trial.Blood advances · 2025Trial
- Trial
- A randomized controlled trial of conventional GVHD prophylaxis with or without teprenone for the prevention of severe acute GVHD.Annals of hematology · 2025Trial
- Trial
- Long term results of a prospective multicenter observational study on the use of anti-human T-lymphocyte immunoglobulin (ATLG) in unrelated donor transplantation (ATOS study).Bone marrow transplantation · 2024Trial
- Memory T-cell enriched haploidentical transplantation with NK cell addback results in promising long-term outcomes: a phase II trial.Journal of hematology & oncology · 2024Trial
- Trial
- Phase I-II Trial of Early Azacitidine after Matched Unrelated Donor Hematopoietic Cell Transplantation.Transplantation and cellular therapy · 2023Trial
- Phase 2 study of natalizumab plus standard corticosteroid treatment for high-risk acute graft-versus-host disease.Blood advances · 2023Trial
- Phase II Study of Myeloablative 7-8/8-Matched Allotransplantation with Post-Transplantation Cyclophosphamide, Tacrolimus, and Mycophenolate Mofetil.Transplantation and cellular therapy · 2023Trial
- Higher abatacept exposure after transplant decreases acute GVHD risk without increasing adverse events.Blood · 2023Trial
- Phenotypic and functional characterization of the CD6-ALCAM T-cell co-stimulatory pathway after allogeneic cell transplantation.Haematologica · 2022Trial
- Thiotepa-fludarabine-treosulfan conditioning for 2nd allogeneic HCT from an alternative unrelated donor for patients with AML: a prospective multicenter phase II trial.Bone marrow transplantation · 2022Trial
- Naive T-Cell Depletion to Prevent Chronic Graft-Versus-Host Disease.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2022Trial
- Trial
- Chronic graft-versus-host disease after PTCy-based prophylaxis vs non-PTCy prophylaxis.Blood advances · 2026Article
92 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
46 authors at 20 institutions in 2 countries.
Funding
Abstract
purposeSevere (grade 3-4) acute graft-versus-host disease (AGVHD) is a major cause of death after unrelated-donor (URD) hematopoietic cell transplant (HCT), resulting in particularly high mortality after HLA-mismatched transplantation. There are no approved agents for AGVHD prevention, underscoring the critical unmet need for novel therapeutics. ABA2 was a phase II trial to rigorously assess safety, efficacy, and immunologic effects of adding T-cell costimulation blockade with abatacept to calcineurin inhibitor (CNI)/methotrexate (MTX)-based GVHD prophylaxis, to test whether abatacept could decrease AGVHD.
methodsABA2 enrolled adults and children with hematologic malignancies under two strata: a randomized, double-blind, placebo-controlled stratum (8/8-HLA-matched URD), comparing CNI/MTX plus abatacept with CNI/MTX plus placebo, and a single-arm stratum (7/8-HLA-mismatched URD) comparing CNI/MTX plus abatacept versus CNI/MTX CIBMTR controls. The primary end point was day +100 grade 3-4 AGVHD, with day +180 severe-AGVHD-free-survival (SGFS) a key secondary end point. Sample sizes were calculated using a higher type-1 error (0.2) as recommended for phase II trials, and were based on predicting that abatacept would reduce grade 3-4 AGVHD from 20% to 10% (8/8s) and 30% to 10% (7/8s). ABA2 enrolled 142 recipients (8/8s, median follow-up = 716 days) and 43 recipients (7/8s, median follow-up = 708 days).
resultsIn 8/8s, grade 3-4 AGVHD was 6.8% (abatacept) versus 14.8% (placebo) (
conclusionAdding abatacept to URD HCT was safe, reduced AGVHD, and improved SGFS. These results suggest that abatacept may substantially improve AGVHD-related transplant outcomes, with a particularly beneficial impact on HLA-mismatched HCT.
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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.