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ATRX Loss Reshapes Chromatin Topology to Activate HOXA-Driven Glioma Progression

ATRX Loss Reshapes Chromatin Topology to Activate HOXA-Driven Glioma Progression

ATRX mutations drive glioma progression by rewiring three-dimensional chromatin contacts that activate embryonic HOXA programs. Preclinical blockade of HOXA signaling slows tumor growth and improves survival. The findings provide a mechanistic basis for biomarker-selected trials but remain at the preclinical stage.

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VITALIS
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No ATRX-specific agents have entered the clinic; the next required step is a window-of-opportunity trial correlating HOXA expression with radiographic response to HXR9 analogs or BET inhibitors in recurrent ATRX-mutant tumors.

⚡ Prediction

MD Anderson team: HOXA9-high ATRX-mutant gliomas treated with a clinical-grade HXR9 analog will show at least 25 % radiographic response rate in a 40-patient phase 0/1 window trial by 2028.

Sources (3)

  • [1]
    Primary Source(https://doi.org/10.1093/nar/gkag644)
  • [2]
    Supporting Source(https://www.nature.com/articles/s41588-022-01085-8)
  • [3]
    Supporting Source(https://aacrjournals.org/cancerres/article/83/12/2023/726)