EYA2 tyrosine phosphatase inhibition reduces MYC and prevents medulloblastoma progression

Neuro Oncol. 2023 Dec 8;25(12):2287-2301. doi: 10.1093/neuonc/noad128.


Background: Medulloblastoma is the most common pediatric brain malignancy. Patients with the Group 3 subtype of medulloblastoma (MB) often exhibit MYC amplification and/or overexpression and have the poorest prognosis. While Group 3 MB is known to be highly dependent on MYC, direct targeting of MYC remains elusive.

Methods: Patient gene expression data were used to identify highly expressed EYA2 in Group 3 MB samples, assess the correlation between EYA2 and MYC, and examine patient survival. Genetic and pharmacological studies were performed on EYA2 in Group 3 derived MB cell models to assess MYC regulation and viability in vitro and in vivo.

Results: EYA2 is more highly expressed in Group 3 MB than other MB subgroups and is essential for Group 3 MB growth in vitro and in vivo. EYA2 regulates MYC expression and protein stability in Group 3 MB, resulting in global alterations of MYC transcription. Inhibition of EYA2 tyrosine phosphatase activity, using a novel small molecule inhibitor (NCGC00249987, or 9987), significantly decreases Group 3 MB MYC expression in both flank and intracranial growth in vivo. Human MB RNA-seq data show that EYA2 and MYC are significantly positively correlated, high EYA2 expression is significantly associated with a MYC transcriptional signature, and patients with high EYA2 and MYC expression have worse prognoses than those that do not express both genes at high levels.

Conclusions: Our data demonstrate that EYA2 is a critical regulator of MYC in Group 3 MB and suggest a novel therapeutic avenue to target this highly lethal disease.

Keywords: EYA2; Group 3 medulloblastoma; MYC.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, N.I.H., Extramural

MeSH terms

  • Cell Line, Tumor
  • Cerebellar Neoplasms* / drug therapy
  • Cerebellar Neoplasms* / genetics
  • Cerebellar Neoplasms* / metabolism
  • Child
  • Humans
  • Intracellular Signaling Peptides and Proteins
  • Medulloblastoma* / drug therapy
  • Medulloblastoma* / genetics
  • Medulloblastoma* / metabolism
  • Nuclear Proteins / genetics
  • Protein Tyrosine Phosphatases / genetics
  • Tyrosine


  • Protein Tyrosine Phosphatases
  • Tyrosine
  • EYA2 protein, human
  • Nuclear Proteins
  • Intracellular Signaling Peptides and Proteins