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This study evaluates the experimental drug S241656, alone or combined with treatments such as FOLFOX, FOLFIRI, Cetuximab, or Panitumumab, in advanced or metastatic solid tumors carrying RAS or RAF gene alterations (such as KRAS, NRAS, HRAS, or BRAF). Adults with confirmed alterations in cancers including lung, pancreatic, and colorectal may take part. The study is in Phase 1/Phase 2 and is currently enrolling participants.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Key Inclusion Criteria: * Life expectancy of ≥ 12 weeks in the opinion of the investigator. * Histologically or cytologically confirmed recurrent locally advanced (unresectable) or metastatic solid tumors with documented RAS or RAF mutations or alterations. * Adequate bone marrow and organ function. * Recovered from toxicity to prior anti-cancer therapy. Part 1 Dose Escalation cohort ONLY: * Part 1A: Advanced/metastatic NSCLC with KRAS non-G12C, HRAS, NRAS, BRAF or CRAF (RAF1) mutations or alterations * Part 1B: Advanced/metastatic GI tumors (e.g., PDAC, CRC, and BTC) with KRAS, HRAS, NRAS, BRAF, and/or CRAF (RAF1) mutations or alterations * Part 1C: Advanced/metastatic PDAC with KRAS, HRAS, NRAS, BRAF, and/or CRAF (RAF1) mutations or alterations * Part 1D: Colorectal adenocarcinoma with KRAS, HRAS, NRAS, BRAF, and/or CRAF (RAF1) mutations or alterations * Part 1E: Other advanced/metastatic non-GI, non-NSCLC solid tumors with KRAS, HRAS, NRAS, BRAF, CRAF (RAF1) mutations or alterations Part 2 Dose Optimization and Expansion cohorts ONLY: * Part 2A: Advanced/metastatic NSCLC with KRAS non-G12C mutations and/or BRAF mutations * Part 2A1: Advanced/metastatic NSCLC with KRAS non-G12C mutations * Part 2A2: Advanced/metastatic NSCLC with BRAF mutations * Part 2A3: Advanced/metastatic NSCLC with KRAS non-G12C or BRAF mutations or alterations and active CNS metastatic disease * Part 2A4: Advanced/metastatic NSCLC with a KRAS G12C mutation * Part 2B1: Advanced/metastatic PDAC with KRAS, HRAS, NRAS, BRAF, and/or CRAF (RAF1) mutations or alterations * Part 2B2: Advanced/metastatic CRC with KRAS, HRAS, NRAS, BRAF, and/or CRAF (RAF1) mutations or alterations * Part 2B3: Advanced/metastatic BTC (adenocarcinoma) with KRAS, HRAS, NRAS, BRAF, and/or CRAF (RAF1) mutations or alterations Key Exclusion Criteria: * Cancer that has a known MEK1/2 mutation. * Known allergy/hypersensitivity to excipients of S241656 or to any of the registered IMPs administered in combination. * Any contra-indication, to use of any of the combination chemotherapy or anti-EGFR therapy partners administered as part of this trial. * Major surgery within 4 weeks of study entry or planned during study. * Ongoing anticancer therapy. * Ongoing radiation therapy. * Uncontrolled or active clinically relevant bacterial, fungal, or specific viral infection requiring systemic therapy. * Clinically significant cardiovascular disease. * Symptomatic spinal cord compression. * Evidence of active malignancy (other than study-specific malignancies) requiring systemic therapy within the next 2 years. * History or current evidence of retinal vein occlusion (RVO) or current risk factors for RVO. * Females who are pregnant or breastfeeding. * Actively receiving systemic treatment or direct medical intervention on another therapeutic clinical study. * Prior use of experimental agents that target the KRAS/BRAF/MEK/ERK pathway.