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Clinical Trial Summary

To find the recommended dose of MRTX849 that can be given in combination with cetuximab and irinotecan to patients with colorectal cancer that have a mutation (genetic change) called KRAS G12C.


Clinical Trial Description

Primary objectives: - To determine the optimal biological dose (OBD) of MRTX849 when used in combination with cetuximab and irinotecan. - To evaluate the safety profile of this combination. - To determine the antitumor activity of this combination in patients with metastatic KRASG12C colorectal cancer. Exploratory objectives: - To explore correlations between MRTX849 exposure and patient outcomes such as disease response, objective response rate (ORR), duration or response (DOR), progression-free survival (PFS), overall survival (OS), safety, and pharmacodynamic endpoints. - To evaluate the utility of detecting KRASG12C mutation in plasma to identify suitable patients. - To explore potential pharmacodynamic (PD) markers of KRASG12C and EGFR inhibition in tumor tissue and/or blood plasma. - To explore correlations between baseline tumor biomarkers, gene alterations, and clinical activity/efficacy. - To define mechanisms of acquired resistance to EGFR and KRASG12C inhibition and evaluate novel strategies to overcome such resistance. - To assess pharmacokinetics of MRTX849 and irinotecan and key metabolites. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05722327
Study type Interventional
Source M.D. Anderson Cancer Center
Contact David S. Hong, MD
Phone (713) 563-5844
Email dshong@mdanderson.org
Status Recruiting
Phase Phase 1
Start date December 6, 2023
Completion date September 30, 2027

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