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. 2019 Jun;54(6):839-848.
doi: 10.1038/s41409-018-0344-9. Epub 2018 Sep 26.

Impact of a novel prognostic model, hematopoietic cell transplant-composite risk (HCT-CR), on allogeneic transplant outcomes in patients with acute myeloid leukemia and myelodysplastic syndrome

Affiliations

Impact of a novel prognostic model, hematopoietic cell transplant-composite risk (HCT-CR), on allogeneic transplant outcomes in patients with acute myeloid leukemia and myelodysplastic syndrome

Piyanuch Kongtim et al. Bone Marrow Transplant. 2019 Jun.

Abstract

Outcomes after allogeneic stem-cell transplantation (AHSCT) are influenced by both disease- and patient-related factors. Here, we developed a novel prognostic model, hematopoietic cell transplant-composite risk (HCT-CR), by combining the refined disease risk index (DRI-R) and hematopoietic stem-cell transplant comorbidity/age index (HCT-CI/Age) to predict post-transplant survival for patients with acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). The analysis included 942 AML/MDS patients treated with AHSCT. Patients were stratified into 4 HCT-CR risk groups: Low-risk-patients with low/intermediate DRI-R and HCT-CI/Age ≤3 (N = 272); Intermediate-risk-patients with low/intermediate DRI-R and HCT-CI/Age >3 (N = 168); High-risk-patients with high/very high DRI-R and HCT-CI/Age ≤3 (N = 284); and Very high-risk-patients with high/very high DRI-R and HCT-CI/Age >3 (N = 184). Compared with the low-risk group, intermediate, high, and very high-risk groups had a significantly increased risk of death [adjusted HR of 1.37 (P < 0.04), 2.08 (P < 0.001), and 2.92 (P < 0.001), respectively]. The concordance test showed that the HCT-CR model provided better discriminative capacity for OS prediction compared with all prior models independently, including cytogenetic risk group, DRI-R, and HCT-CI/Age model (C-indices: 0.62, 0.55, 0.60, and 0.54, respectively) (P < 0.001). In conclusion, combining disease- and patient-related factors provides better survival stratification for patients with AML/MDS receiving AHSCT.

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Conflict of interest statement

Competing interests: The authors have no competing financial interests to disclose for this work.

Figures

Figure 1.
Figure 1.
The classification and regression trees (CART) analysis in a training cohort
Figure 2.
Figure 2.
Overall survival by the hematopoietic cell transplant - composite risk groups (A), cytogenetic risk groups (B), DRI-R (C) and HCT-CI/Age (D)
Figure 2.
Figure 2.
Overall survival by the hematopoietic cell transplant - composite risk groups (A), cytogenetic risk groups (B), DRI-R (C) and HCT-CI/Age (D)
Figure 2.
Figure 2.
Overall survival by the hematopoietic cell transplant - composite risk groups (A), cytogenetic risk groups (B), DRI-R (C) and HCT-CI/Age (D)
Figure 2.
Figure 2.
Overall survival by the hematopoietic cell transplant - composite risk groups (A), cytogenetic risk groups (B), DRI-R (C) and HCT-CI/Age (D)

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