Time-dependent changes in mortality and transformation risk in MDS.

Area of Science:

• Hematology
• Oncology
• Clinical Research

Background:

• Myelodysplastic syndromes (MDS) risk assessment is crucial for patient management.
• The dynamic evolution of risk over time in MDS has not been systematically studied.
• Existing prognostic scores may not accurately reflect long-term risk changes.

Purpose of the Study:

• To investigate the time-dependent changes in risk for mortality and leukemic transformation in MDS.
• To evaluate the impact of these risk changes on the performance of standard prognostic scoring systems.
• To explore potential clinical implications for MDS patient management.

Main Methods:

• Multicenter retrospective analysis of 7212 untreated primary MDS patients.
• Utilized data from the International Working Group for Prognosis in MDS database.
• Analyzed major MDS prognostic scoring systems and individual predictors over time.

Main Results:

• Mortality and acute myeloid leukemia transformation risks decreased over time in higher-risk MDS patients.
• Risks remained stable in lower-risk MDS patients.
• Prognostic scoring systems showed reduced power over time, particularly for survival prediction, with risks converging after 3.5-5 years.

Conclusions:

• MDS risk is not static; higher-risk patients experience decreasing hazards over time.
• Prognostic scores require re-evaluation for time-dependent accuracy.
• A practical risk stratification using IPSS-R at 3.5 points may aid clinical decision-making.