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Study identifier: NCT07284186 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

First-in-Human Study of PLX-61639 in Locally Advanced or Metastatic Solid Tumors

Condition: Esophageal Squamous Cell Carcinoma · Gastric Adenocarcinoma · Gastric Squamous Cell Carcinoma  ·  Sponsor: Plexium, Inc.

PhasePhase 1
Planned participants155
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

A multicenter, single-arm, first-in-human study to investigate the safety, pharmacokinetics, and preliminary antitumor activity of PLX-61639 in participants with locally advanced or metastatic, relapsed/refractory, SMARCA4-deficient solid tumors who are intolerant of or have failed available, approved therapies. The study will be conducted in 3 parts: dose escalation (Part 1), dose optimization (Part 2), and cohort expansion (Part 3). Each part of the study will consist of a Screening Phase lasting up to 28 days during which participants will be assessed for eligibility, a Treatment Phase beginning on Cycle 1 Day 1 and consisting of consecutive 28-day cycles, an End of Treatment Visit, and a Post-Treatment Follow-Up Phase. Participants will receive their assigned dose of PLX-61639 administered orally, once daily until progression/relapse, intolerance, death, or withdrawal from study treatment by the Investigator or participant.

This description comes directly from the study's public registry record.

Talk to the study team

Clinical Operations  ·  619-631-3091  ·  ClinicalTrials@Plexium.com

Always discuss trial participation with your own doctor first.

Locations (10)

Research SiteScottsdale, Arizona, United StatesRecruiting
Research SiteDuarte, California, United StatesRecruiting
Research SiteOrange, California, United StatesRecruiting
Research SiteBoston, Massachusetts, United StatesRecruiting
Research SiteSt Louis, Missouri, United StatesRecruiting
Research SiteNew York, New York, United StatesRecruiting
Research SiteDurham, North Carolina, United StatesRecruiting
Research SiteCleveland, Ohio, United StatesRecruiting
Research SiteSan Antonio, Texas, United StatesRecruiting
Research SiteFairfax, Virginia, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT07284186