ArticleAnnals of hematology2026
The prognostic impact of myeloid co-mutation burden in TP53-mutated AML/MDS after allogeneic stem cell transplantation: a multicenter retrospective analysis.
Article in Annals of hematology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
TP53 mutations are associated with poor prognosis in acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS). Allogeneic hematopoietic stem cell transplantation (allo-HSCT) offers a potential cure, but outcomes are suboptimal and risk stratification remains challenging. This multi-center, retrospective study analyzed 66 patients with TP53-mutated AML/MDS who underwent allo-HSCT. The study endpoints included overall survival (OS), progression-free survival (PFS), and cumulative incidence of relapse (CIR), non-relapse mortality (NRM), and Graft-versus-host disease-free, relapse-free survival (GRFS). After median 1054-day follow-up, 3-year rates for OS, PFS, CIR, NRM, and GRFS were 47.2%, 39.7%, 37.3%, 23%, and 37.4%, respectively. Survival did not differ between AML and MDS. Univariate analysis showed that < 2 somatic myeloid co-mutations predicted inferior OS (3-y OS: 32% vs. 65.9%, p = 0.02) and PFS (27.6% vs. 59.1%, p = 0.01). Age > 50 years adversely affected PFS, and complex karyotype showed a negative trend. Multivariate analysis found no independent factors, likely due to sample size and collinearity. A combined risk factor analysis revealed that patients with ≥ 1 adverse factor (either co-mutations < 2 or complex karyotype) had significantly worse OS (3-y OS: 72.6% vs. 37.2%, p = 0.04) and PFS (3-y PFS: 67.7% vs. 28.9%, p = 0.02) compared to those with neither risk factor. In patients with TP53-mutated AML/MDS undergoing allo-HSCT, a low myeloid co-mutation burden (< 2) is strongly associated with poor outcomes. A composite model integrating co-mutation burden with karyotype may assist in post-transplant risk stratification, offering a practical supplementary parameter when TP53 allelic status is uncertain. This finding requires validation in larger prospective studies.
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