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September 6, 2026Bone Marrow TransplantationOpen Access

Characterisation of TP53 mutational features and outcomes of acute myeloid leukaemia after allogeneic haematopoietic cell transplantation

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Authors

MRMartina ReussTMThomas MeyerFIFlorian Ingelfinger

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Overview

Retrospective cohort study reveals inferior survival driven by relapse in TP53-altered acute myeloid leukemia after stem cell transplant, highlighting distinct prognostic subgroups.

Key Points

  • To evaluate the clinical outcomes of TP53-altered acute myeloid leukemia following allogeneic hematopoietic cell transplantation and characterize prognostic subgroups within this mutational profile.
  • Conducted a single-center retrospective analysis of 61 consecutive TP53-altered acute myeloid leukemia patients undergoing first allogeneic hematopoietic cell transplantation compared with 636 TP53-wild-type controls between 2007 and 2025.
  • Performed hierarchical clustering analysis incorporating an additional seven patients from a second center (total N=68 TP53-altered) to identify distinct molecular subsets.
  • TP53-altered patients had significantly worse 5-year overall survival compared to wild-type controls (18% vs. 50%; median 379 vs. 1694 days; p < 0.001), primarily driven by higher 5-year relapse rates (55% vs. 33%; p < 0.001), while non-relapse mortality was similar (28.5% vs. 23%; p = 0.426).
  • Multivariable Cox regression confirmed TP53 alteration as the strongest independent predictor of inferior overall survival (HR 2.54, 95% CI 1.77–3.64; p < 0.001), persisting after adjustment for cytogenetic risk and Disease Risk Index.
  • Clustering analysis identified two distinct prognostic subgroups: a del(17p)-enriched cluster (n = 12) with a median overall survival of 5.7 months and a TP53 point mutation-enriched cluster (n = 56) with a median overall survival of 15.1 months.

Cite This Study

Reuss et al. (2026) studied this question.

synapsesocial.com/papers/6a9d1ec828139818eab21eeehttps://doi.org/10.1038/s41409-026-03029-2
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Acute Myeloid Leukemia (AML) with TP53 alteration and outcomes after allogeneic hematopoietic stem cell transplantation: A CIBMTR registry study2025 · 1 citations
  2. 2Allogeneic hematopoietic cell transplantation in TP53-mutated Acute Myeloid Leukemia patients with active disease: A study from the global committee and the acute leukemia working party of the EBMT2025 · 1 citations
  3. 3Multi-hit TP53 mutation is an independent adverse prognostic factor in allogeneic hematopoietic stem cell transplantation for acute leukemia and myelodysplastic syndromes2025
  4. 4Clinical outcomes of <i>TP53</i> -mutated myeloid neoplasms after allogeneic hematopoietic cell transplantation: A Canadian multicenter propensity score–matched analysis.2026
  5. 5Decoding the molecular drivers of <i>TP53</i> ‐mutant acute myeloid leukaemia: Clinical implications and prognostic insights2025