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Patients with documented exposure to such agents are referred to as having secondary MDS or treatment-related MDS and constitute as many as 30% of all patients with MDS. Secondary MDS typically has a poorer prognosis than does de novo MDS.

Previously treated myelodysplastic syndrome

Previously treated MDS are de novo or secondary cases of MDS that have progressed despite previous treatment and, in many cases, are receiving additional treatment.

References:

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