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<p>Myeloid neoplasms-post cytotoxic therapy (MN-pCT, previously therapy-related myeloid neoplasms/tMN), are secondary malignancies associated with prior chemotherapy treatment, historically carrying a very poor prognosis. These are rarely associated with primary central nervous system (CNS) tumors, usually high-grade CNS malignancies requiring intensive multimodal treatment. Pediatric low-grade gliomas (pLGGs) are the most common childhood CNS tumors, and up to 50% of patients will require adjuvant therapy, which has traditionally consisted of low-dose metronomic chemotherapy, though the recent identification of key molecular drivers of pLGG means targeted therapies are changing this paradigm. We present a novel case of a 17-year-old girl with therapy-related myelodysplastic syndrome following chemotherapeutic treatment for pLGG. Given the poor prognosis of MN-pCTs, this case represents an important note of caution when choosing appropriate therapy for pLGG, especially considering the evolving role for targeted treatments in this disease.</p>

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Myelodysplastic syndrome-post cytotoxic therapy for pediatric low-grade glioma

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月29日

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  • Phoebe Power,
  • Susannah Payne,
  • Rebecca Walsh,
  • Adam Nelson,
  • Neevika Manoharan

摘要

Myeloid neoplasms-post cytotoxic therapy (MN-pCT, previously therapy-related myeloid neoplasms/tMN), are secondary malignancies associated with prior chemotherapy treatment, historically carrying a very poor prognosis. These are rarely associated with primary central nervous system (CNS) tumors, usually high-grade CNS malignancies requiring intensive multimodal treatment. Pediatric low-grade gliomas (pLGGs) are the most common childhood CNS tumors, and up to 50% of patients will require adjuvant therapy, which has traditionally consisted of low-dose metronomic chemotherapy, though the recent identification of key molecular drivers of pLGG means targeted therapies are changing this paradigm. We present a novel case of a 17-year-old girl with therapy-related myelodysplastic syndrome following chemotherapeutic treatment for pLGG. Given the poor prognosis of MN-pCTs, this case represents an important note of caution when choosing appropriate therapy for pLGG, especially considering the evolving role for targeted treatments in this disease.