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Study identifier: NCT05786924 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Phase 1/2 Trial of S241656 in Selected RAS/MAPK Mutation- Positive Malignancies

Condition: Non-small Cell Lung Cancer · Histiocytic Neoplasm · Histiocytosis  ·  Sponsor: Institut de Recherches Internationales Servier

PhasePhase 1/Phase 2
Planned participants554
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

BDTX-4933-101 is a first-in-human, open-label, Phase 1/2 dose escalation, dose optimization and expansion study designed to evaluate the safety and tolerability of S241656 as monotherapy and in combination with other anti-cancer therapies in participants with selected advanced malignancies. The study population for the Dose Escalation part of the study comprises adults with recurrent advanced/metastatic non-small cell lung cancer (NSCLC), Gastrointestinal (GI) cancers, and other solid tumors harboring KRAS, HRAS, NRAS, BRAF, and/or CRAF (Rapidly Accelerated Fibrosarcoma (RAF1)) mutations or alterations. A dose optimization part in adults with NSCLC may follow the dose escalation phase if the sponsor, in consultation with the safety review committee, decides it is necessary to further characterize the optimal dose. However, the study may also proceed directly to the expansion phase. The study population for the Dose Expansion part of the study comprises adults with advanced/metastatic NSCLC with KRAS and/or BRAF mutations, and with Pancreatic Ductal AdenoCarcinoma (PDAC), ColoRectal Cancer (CRC), and Biliary Tract Cancer (BTC) with KRAS, HRAS, NRAS, BRAF, and/or CRAF (RAF1) mutations and alterations. All patients will self-administer S241656 orally in 28-day cycles until disease progression, toxicity, withdrawal of consent, or termination of the study.

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

Talk to the study team

Institut de Recherches Internationales Servier (I.R.I.S.), Clinical Studies Department  ·  +33 1 55 72 60 00  ·  scientificinformation@servier.com

Always discuss trial participation with your own doctor first.

Locations (27)

Banner Health- MD Anderson Cancer CenterGilbert, Arizona, United StatesRecruiting
The Angeles clinic - A cedars SINAI AFFILIATELos Angeles, California, United StatesRecruiting
USC Norris Comprehensive Cancer CenterLos Angeles, California, United StatesRecruiting
University of California, San Francisco (UCSF)San Francisco, California, United StatesRecruiting
University of Colorado - Aurora Cancer CenterAurora, Colorado, United StatesNot Yet Recruiting
Yale University School of Medicine - Yale Cancer CenterNew Haven, Connecticut, United StatesRecruiting
Georgetown University Lombardi Cancer CenterWashington D.C., District of Columbia, United StatesNot Yet Recruiting
Dana-Farber Cancer InstituteBoston, Massachusetts, United StatesRecruiting
South Texas Accelerated Research Therapeutics (START) MidwestGrand Rapids, Michigan, United StatesRecruiting
Masonic Cancer Center University of MinnesotaMinneapolis, Minnesota, United StatesRecruiting
Washington UniversitySt Louis, Missouri, United StatesRecruiting
NYU Langone Medical Center - Perlmutter Cancer Center (NYU Cancer Institute)New York, New York, United StatesRecruiting

+ 15 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT05786924