Case #3 | Inform Localized vs. Systemic Disease

  • 65-year-old female
  • Provisional Dx: Vitreoretinal lymphoma
  • Multiple prior cancers s/p systemic therapy
  • Extent of CNS involvement?

  • Vitrectomy: atypical lymphoid cells, MYD88 L265P
  • Repeat imaging shows no intracranial involvement
  • CSF cytology: negative/indeterminate
  • Summit molecular profile in CSF

Summit™ Report

  • MYD88 L265P detected in CSF confirms broader CNS involvement
  • Discussed at tertiary center tumor board
  • Treated with systemic low dose MTX instead of local intraocular injection
  • Monitor VAF of MYD88 with serial Summit testing 
  • Over time, MYD88 not detected (negative). Clinician confirms response to therapy.