Data Highlights from the ongoing Phase 2 trial (Data cut: March 18, 2026):

In the intent-to-treat (ITT) population, the dose selected for the registrational program, 30 mg onvansertib arm in combination with FOLFIRI/ bev achieved:

  • Primary endpoint of confirmed objective response rate of 72.2% (13/18), compared with 42.1% (8/19) for FOLFIRI/bev alone, a 30% improvement over standard-of-care (SoC). The responses were deeper and more durable in the onvansertib arm.
  • Secondary endpoint of progression free survival (PFS) hazard ratio (HR) of 0.55 (95% CI: 0.15–2.09) and 0.57 (95% CI: 0.20–1.65) vs. FOLFIRI/bev by Blinded Independent Central Review (BICR) and investigator assessment (IA), respectively.
  • Median PFS not reached in 30 mg onvansertib + FOLFIRI/bev arm, but has been reached in both SoC arms. Four patients remain on onvansertib treatment beyond 15 months, including 2 beyond 20 months.

Notably, fourteen patients remain on trial, with nine patients in the onvansertib (20 or 30 mg) plus FOLFIRI/bev arms and one patient remaining on SoC.

No meaningful differences in efficacy were observed between the onvansertib + FOLFOX/bev arms and FOLFOX/bev alone.