First In Human Study of CX-801 in Advanced Solid Tumors

Trial statusRecruiting
Trial phasePhase 1
Trial typeInterventional
Biological sexAll
Age18+
SponsorCytomX Therapeutics

About this trial

The purpose of this first-in-human study, CTMX-801-101, is to characterize the safety, tolerability, and antitumor activity of CX-801 as monotherapy and in combination with pembrolizumab in adult participants with advanced solid tumors.

Eligibility criteria

Qualifiers

Metastatic or locally advanced unresectable solid tumor that has progressed after standard therapy

Eastern Cooperative Oncology Group (ECOG) performance status of 0-1

Measurable disease per RECIST v1.1

Consent to fresh biopsy or if medically contraindicated, recent (within 6 months) archival tumor tissue

Disqualifiers

Recent history (within last 2 years) of localized cancers that are not related to the current cancer being treated

Known active central nervous system (CNS) involvement by malignancy

Prior PD-1/ PD-(L)1 inhibitor treatment discontinued due to grade 3 or higher immune related adverse event

Systemic anticancer treatment within 4 weeks or 5 half lives prior to first dose of study treatment

Trial design

Treatments tested in this trial

  • CX-801
  • pembrolizumab

Treatment groups

121 Participants
are divided into 2 treatment groups

Sponsors and collaborators

CytomX Therapeutics

Lead sponsor

Merck Sharp & Dohme LLC

Collaborator