Prognostic impact of elevated pretreatment serum ferritin in patients with high-risk MDS treated with azacitidine
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Published on: June 10, 2025
Kamel Laribi1, Delphine Bolle2, Mustapha Alani1
1Department of Hematology, Centre Hospitalier Le Mans, Le Mans, France.
Abstract:
Iron overload has been associated with poor overall survival in patients with higher-risk myelodysplastic syndromes after allogeneic hematopoietic stem cell transplantation, but has not been investigated in higher-risk MDS patients treated with hypomethylating agents. We evaluated the prognostic value of serum ferritin levels at diagnosis in a retrospective analysis of 48 patients with an intermediate 2 or high-risk International Prognostic Scoring System (IPSS) score treated with azacytidine. overall survival probability at 1 and 2 years was 58% and 42%, respectively. When stratifying according to serum ferritin level at azacytidine initiation, patients with serum ferritin level <725 ng/mL had significantly better OS than those with serum ferritin level ≥725 ng/mL, with an overall survival probability of 74% (95% confidence interval [CI]: 58-94) versus 44% (95% CI: 28-68) at 1 year and 57% (95% CI: 39-81) versus 28% (95% CI: 15-52) at 2 years, respectively (p = 0.034). Median progression-free survival was 16.15 months (range: 9-26) for the entire cohort. Progression-free survival probabilities according to serum ferritin cut-off level <725 ng/mL or ≥725 ng/mL at 1 and 2 years were 70% (95% CI: 53-91) versus 44 (95% CI: 28-68) and 52% (95% CI: 35-77) versus 24% (95% CI: 12-48), respectively (p = 0.031). We have demonstrated that an serum ferritin level ≥725 ng/mL was associated with worse overall survival and progression-free survival when adjusting for other covariables in multivariate analysis, in addition, unfavorable karyotype led to worse outcome. In conclusion, we believe that that negative effect of serum ferritin level on overall survival is not only related to the iron toxicity, but most probably may also be considered as a surrogate marker for very ineffective erythropoiesis leading to marked anemia.
Insights
High serum ferritin levels (≥725 ng/mL) indicate poor survival outcomes in myelodysplastic syndromes patients treated with azacitidine. Lower ferritin levels correlate with significantly better overall and progression-free survival, suggesting iron overload
Area of Science:
- Hematology
- Oncology
Background:
- Iron overload is linked to poor survival in higher-risk myelodysplastic syndromes (MDS) post-hematopoietic stem cell transplantation.
- Its prognostic value in higher-risk MDS patients treated with hypomethylating agents remains under-investigated.
Purpose of the Study:
- To evaluate the prognostic significance of serum ferritin levels at diagnosis in higher-risk MDS patients receiving azacitidine.
Main Methods:
- Retrospective analysis of 48 patients with intermediate-2 or high-risk International Prognostic Scoring System (IPSS) scores treated with azacitidine.
- Serum ferritin levels were assessed at the initiation of azacitidine therapy.
Main Results:
- Patients with serum ferritin <725 ng/mL had significantly better overall survival (OS) and progression-free survival (PFS) compared to those with levels ≥725 ng/mL.
- Multivariate analysis confirmed that serum ferritin ≥725 ng/mL was associated with worse OS and PFS.
- Unfavorable karyotype also correlated with poorer outcomes.
Conclusions:
- Elevated serum ferritin (≥725 ng/mL) is a significant negative prognostic factor for survival in higher-risk MDS patients treated with azacitidine.
- High ferritin may reflect iron toxicity or serve as a marker for ineffective erythropoiesis and severe anemia.
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