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Phase II

A Phase 2 Study of VS-6766 (Dual RAF/MEK Inhibitor) Alone and In Combination With Defactinib (FAK Inhibitor) in Recurrent Low-Grade Serous Ovarian Cancer (LGSOC)

  • Study HIC#:2000030079
  • Last Updated:10/25/2021

This study will assess the safety and efficacy of VS-6766 monotherapy and in combination with Defactinib in subjects with recurrent Low-Grade Serous Ovarian Cancer (LGSOC)

  • GenderFemale only
  • Start Date10/21/2021
  • End Date06/30/2023

Trial Purpose and Description

This is a multicenter, randomized, open-label Phase 2 study designed to evaluate safety and tolerability and preliminary efficacy of VS-6766 versus VS-6766 in combination with defactinib in subjects with molecularly profiled recurrent LGSOC.

Eligibility Criteria

Inclusion Criteria:

  • Histologically proven LGSOC (ovarian, peritoneal)
  • In Part A KRAS mutation, KRAS wt
  • Progression or recurrence of LGSOC after at least one prior systemic therapy for metastatic disease.
  • Measurable disease according to RECIST 1.1
  • An Eastern Cooperative Group (ECOG) performance status ≤ 1.
  • Adequate organ function
  • Adequate recovery from toxicities related to prior treatments
  • Agreement to use highly effective method of contraceptive

Exclusion Criteria:

  • Systemic anti-cancer therapy within 4 weeks of the first dose of study therapy
  • Co-existing high-grade ovarian cancer or another histology
  • History of prior malignancy with recurrence <3 years from the time of enrollment
  • Major surgery within 4 weeks
  • Symptomatic brain metastases requiring steroids or other interventions
  • Known SARS-Cov2 infection (clinical symptoms) ≤28 days prior to first dose of study therapy
  • For subjects with prior MEK exposure, Grade 4 toxicity deemed related to the MEK inhibitor
  • Active skin disorder that has required systemic therapy within the past year
  • History of rhabdomyolysis
  • Concurrent ocular disorders
  • Concurrent heart disease or severe obstructive pulmonary disease
  • Subjects with the inability to swallow oral medications


For more information about this study, contact: