In vivo evaluation of the EZH2 inhibitor (EPZ011989) alone or in combination with standard of care cytotoxic agents against pediatric malignant rhabdoid tumor preclinical models—A report from the Pediatric Preclinical Testing Consortium

Raushan T. Kurmasheva, Stephen W. Erickson, Eric Earley, Malcolm A. Smith, Peter J. Houghton

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The Pediatric Preclinical Testing Program (PPTP) previously reported the activity of the EZH2 inhibitor tazemetostat (EPZ6438) against xenograft models of rhabdoid tumors. Here, we determined whether an inhibitor of EZH2 enhanced the effect of standard of care chemotherapeutic agents: irinotecan, vincristine, and cyclophosphamide. EPZ011989 significantly prolonged time to event in all the six rhabdoid models studied but did not induce tumor regression. The addition of EPZ011989 to standard of care agents significantly improved time to event in at least one model for each of the agents studied, although this effect was observed in only a minority of the combination testing experiments.

Original languageEnglish (US)
Article numbere28772
JournalPediatric Blood and Cancer
Volume68
Issue number2
DOIs
StatePublished - Feb 2021

Keywords

  • pediatric cancer
  • rhabdomyosarcoma
  • xenograft models

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Hematology
  • Oncology

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