New combo shows promise for Tough-to-Treat colorectal cancer
NCT ID NCT05004350
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a new two-drug combination (encorafenib and cetuximab) against standard treatments in 107 Chinese patients with a specific genetic mutation (BRAF V600E) that makes colorectal cancer harder to treat. The goal was to see if the new combo could slow cancer growth better than current options. While not a cure, it aims to give patients more time before their cancer progresses.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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107 people
The number who actually took part.
- Started
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Sep 2021
- Finished
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Dec 2024
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria for Molecular Prescreening: The following inclusion criteria must be met for a participant to be eligible to undergo molecular tumor prescreening: * Chinese male or female participant with age ≥18 years at the time of informed consent. * Histologically- or cytologically-confirmed colorectal cancer (CRC) that is metastatic. * Eligible to receive cetuximab per Chinese approved label with regard to tumor Rat Sarcoma Viral Oncogene Homologue (RAS) mutation status (i.e. approved for Rat Sarcoma Viral Oncogene Homologue Wild Type(RAS wt) status). * Able to provide a sufficient amount of representative tumor specimen for central prospective laboratory testing of B-RAF Proto-oncogene, Serine/threonine Kinase (BRAF) mutation status and also retrospective RAS wt status and Microsatellite Instability (MSI) testing. Inclusion Criteria for Treatment Period: The following inclusion criteria must be met for a participant to be eligible for this study: * Chinese male or female participant with age ≥18 years at time of informed consent. * Histologically or cytologically confirmed CRC that is metastatic and unresectable at time of study entry (i.e. not suitable for complete surgical resection at screening). * Presence of a BRAF V600E mutation in tumor tissue previously determined by a local assay at any time before screening or by the central laboratory. NOTE: Other protocol defined Inclusion criteria may apply Exclusion Criteria for Molecular Prescreening: Participants meeting any of the following criteria are not eligible to undergo molecular tumor prescreening: * Prior anti-Epidermal Growth Factor Receptor (anti-EGFR) treatment * More than two prior regimens in the metastatic setting. * Known contraindication to receive cetuximab or irinotecan at the planned dose according to the most recent cetuximab and irinotecan local label. * Known history of Gilbert's syndrome or is known to have any of the following genotypes: uridine 5'-diphospho-glucuronosyltransferase (UGT)1A1\*6/\*6, UGT1A1\*28/\*28 or UGT1A1\*6/\*28. * Leptomeningeal disease. Exclusion Criteria for Treatment Period: * Prior treatment with any Proto oncogene Serine/threonine-Protein Kinase (RAF) inhibitor, cetuximab, panitumumab or other EGFR inhibitors. * Symptomatic brain metastasis. * Leptomeningeal disease. * Use of any herbal medications/supplements or any medications or foods that are moderate or strong inhibitors or inducers of cytochrome P450 (CYP)3A4/5 ≤1 week before the start of study intervention. * Known history of acute or chronic pancreatitis within 6 months before the start of study intervention. NOTE: Other protocol defined Exclusion criteria may apply
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Beijing Cancer Hospital
Beijing, Beijing Municipality, 100036, China
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Cancer Center of Guangzhou Medical University
Guangzhou, Guangdong, 510095, China
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Cancer Hospital Affiliated to Shantou University Medical College
Shantou, Guangdong, 515041, China
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First Affiliated Hospital of Gannan Medical University
Ganzhou, Jiangxi, 341001, China
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Fujian Medical University - Fujian Provincial Cancer Hospital
Fuzhou, Fujian, 350014, China
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Harbin Medical University Cancer Hospital
Harbin, Heilongjiang, 150040, China
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Henan Cancer Hospital
Zhengzhou, Henan, 450008, China
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Huashan Hospital Fudan University
Shanghai, Shanghai Municipality, 200040, China
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Liaoning Cancer Hospital & Institute
Shenyang, Liaoning, 110042, China
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Peking Union Medical College Hospital, Chinese Academy of Medical Sciences
Beijing, Beijing Municipality, 100730, China
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Peking University Shenzhen Hospital
Shenzhen, Guangdong, 518036, China
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Shaanxi Provincial People's Hospital
Xi'an, Shaanxi, 710068, China
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Shanghai East Hospital, Tongji University
Shanghai, Shanghai Municipality, 200120, China
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Sir Run Run Shaw Hospital - Zhejiang University School of Medicine
Hangzhou, Zhejiang, 310016, China
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The Affiliated Hospital of Hebei University
Baoding, Hebei, 071000, China
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The First Affiliated Hospital - Zhejiang University School of Medicine
Hangzhou, Zhejiang, 310003, China
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The First Affiliated Hospital of Jinzhou Medical University
Jinzhou, Liaoning, 121011, China
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The First Affiliated Hospital of Nanchang University
Nanchang, Jiangxi, 330006, China
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The First Affiliated Hospital of Xiamen University
Xiamen, Fujian, 361001, China
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The First Affiliated Hospital of Zhengzhou University
Zhengzhou, Henan, 450052, China
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The First Hospital of China Medical University
Shenyang, Liaoning, 110001, China
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The First Hospital of Jilin University
Changchun, Jilin, 130021, China
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The First People's Hospital of Changzhou
Changzhou, Jiangsu, 213003, China
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The First People's Hospital of Foshan
Foshan, Guangdong, 528010, China
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The Second Affiliated Hospital of Nanchang University
Nanchang, Jiangxi, 330006, China
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The Second People's Hospital of Neijiang
Neijiang, Sichuan, 641000, China
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The Sixth Affiliated Hospital Sun Yat-Sen University
Guangzhou, Guangdong, 510655, China
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Tianjin Medical University Cancer Institute and Hospital
Tianjin, Tianjin Municipality, 300060, China
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Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology
Wuhan, Hubei, 430030, China
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Union Hospital Tongji medical college Huazhong University of Science and Technology
Wuhan, Hubei, 430022, China
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Xiangya Hospital Central South University
Changsha, Hunan, 410008, China
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Xinhua Hospital Affilliated to Shanghai Jiaotong University School of Medicine
Shanghai, Shanghai Municipality, 200092, China
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Zhongnan Hospital of Wuhan University
Wuhan, Hubei, 430071, China
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Zhongshan Hospital Fudan University
Shanghai, Shanghai Municipality, 200032, China
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a targeted drug boost chemotherapy in advanced colorectal cancer?
- New antibody aims to preserve immune checkpoint while fighting cancer
- Two-Step PET scan aims to spot hidden colorectal cancer spread
- Can a targeted drug conjugate outsmart advanced colorectal cancer?
- Can an antimalarial drug boost immunotherapy against colorectal cancer?