Marvin-Peek J, Mason EF, Kishtagari A, Jayani RV, Dholaria B, Kim TK, Engelhardt BG, Chen H, Strickland S, Savani B, Ferrell B, Kassim A, Savona M, Mohan S, Byrne M. TP53 mutations are associated with increased infections and reduced hematopoietic cell transplantation rates in myelodysplastic syndrome and acute myeloid leukemia.
Transplant Cell Ther 2023:S2666-6367(23)01166-1. [PMID:
36906277 DOI:
10.1016/j.jtct.2023.03.008]
[Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/21/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023]
Abstract
BACKGROUND
Although allogeneic hematopoietic cell transplantation (HCT) is the only potentially curative therapy for patients with poor-risk myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML), only a minority of these patients undergo HCT. TP53-mutated (TP53MUT) MDS/AML is particularly high risk, yet fewer TP53MUT patients undergo HCT than other poor-risk TP53-wild type (TP53WT) patients.
OBJECTIVE
We hypothesized that TP53MUT MDS/AML patients have unique risk factors affecting rates of HCT, and therefore investigated phenotypic changes that may prevent patients with TP53MUT MDS/AML from receiving HCT.
STUDY DESIGN
This study was a single center retrospective analysis of outcomes for adults with newly diagnosed MDS or AML (n=352). HLA typing was used as a surrogate for physician "intent to transplant." Multivariable logistic regression models were used to estimate odds ratios (OR) for factors associated with HLA typing, HCT, and pre-transplant infections. Multivariable Cox proportional hazards models were used to create predicted survival curves for patients with and without TP53 mutations.
RESULTS
Overall significantly fewer TP53MUT patients underwent HCT compared to TP53WT patients (19% versus 31%, p=0.028). Development of an infection was significantly associated with decreased odds of HCT (OR=0.42, 95% CI: 0.19-0.90) and worse overall survival (HR=1.46, 95% CI: 1.09-1.96) in multivariable analyses. TP53MUT disease was independently associated with increased odds of developing an infection (OR 2.18, 95% CI: 1.21-3.93), bacterial pneumonia (OR 1.83, 95% CI: 1.00-3.33), and invasive fungal infection (OR 2.64, 95% CI: 1.34-5.22) prior to HCT. Infections were the cause of death in significantly more patients with TP53MUT disease (38% vs 19%, p=0.005).
CONCLUSIONS
With substantially more infections and decreased HCT rates in patients with TP53 mutations, this raises the possibility that phenotypic changes occurring in TP53MUT disease may affect infection susceptibility in this population and drastically impact clinical outcomes.
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