FALCO
Sponsor study identifier
interventional
40
1 country
1
Study Start
April 30, 2026
Actual (reported)Primary Completion
December 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
December 2031
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Background:KRAS mutations are the most common genetic alterations in colorectal cancer (CRC), associated with aggressive tumor biology and poor prognosis. For metastatic CRC harboring KRAS mutations, first-line standard treatment is chemotherapy plus bevacizumab. However, its anti-angiogenic effects contraindicate perioperative use. KRAS G12C, the first druggable KRAS target, accounts for \~3% of CRC KRAS mutations. KRAS G12C inhibitor monotherapy shows efficacy in post-standard-therapy metastatic CRC, while combination with RAS-MAPK pathway blockade demonstrates superior efficacy. Based on promising frontline data combining KRAS G12C inhibitors with anti-EGFR antibodies in metastatic CRC, we evaluate neoadjuvant fulzerasib plus cetuximab N01 in locally advanced KRAS G12C-mutated CRC, with or without resectable metastases. Methods:Single-arm, multicenter, phase II trial (N=40). Eligibility: age 18-80 years, ECOG 0-1, histologically confirmed colorectal adenocarcinoma (stages T4N0-2M0, T3N2M0, T0-4N0-2M1a \[resectable metastases confirmed by multidisciplinary discussion\]), KRAS G12C mutation, NRAS/BRAF wild-type, pMMR/MSS. Neoadjuvant therapy: fulzerasib (qd, po, d1-28) plus cetuximab N01 (500 mg/m², IV, q2w) for 2 months. Safety assessments (CBC, liver/renal function, QoL) every 2 weeks; CEA monthly. Tumor response assessed by CT chest/abdomen and rectal MRI at 2 months. Radical surgery for responders (cCR patients may choose watchful waiting). Adjuvant therapy per pathological response. Follow-up: CEA every 3 months, CT every 6 months. Primary endpoint: overall response rate (pCR or cCR). Secondary endpoints: ORR, 1-year DFS, 3-year DFS, QoL. RECIST v1.1 for disease assessment; NCI-CTCAE v5.0 for adverse events. Hypothesis:This chemotherapy-free neoadjuvant regimen combining a KRAS G12C inhibitor with cetuximab N01 may enhance perioperative safety and improve prognosis and quality of life in patients with KRAS G12C-mutated CRC.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2031
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
April 30, 2026
Actual (reported)May 6, 2026
Actual (reported)May 12, 2026
Actual (reported)December 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
December 2031
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
overall response rate
the proportion of patients achieving pCR or cCR after neoadjuvant therapy
1 year
objective response rate
1 year
1-year disease -free survival rate
1 year
3-year disease -free survival rate
3 years
neoadjuvant therapy with fulzerasib and cetuximab N01
Eligible subjects will receive neoadjuvant therapy comprising fulzerasib ((qd, po, d1-28) and cetuximab N01 (500 mg/m², IV, q2w) for two months
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
These entries preserve how the registry describes the intervention. Their treatment roles are shown separately from molecular identities.
Grouped treatment entry
fulzerasib; cetuximab N01
The registry names several treatments. This does not confirm that participants received them together or that they form a single product.
View registry recordSecond Affiliated Hospital, Zhejiang University School of Medicine
Hangzhou, Zhejiang, 310000, China
Rona Yaeger et al. A phase 1b study of sotorasib combined with panitumumab as second-line treatment of KRAS G12C-mutated colorectal cancer. JCO 42, 128-128(2024).
Ying Yuan et al. Efficacy and safety of IBI351 (GFH925) monotherapy in metastatic colorectal cancer harboring KRASG12C mutation: Preliminary results from a pooled analysis of two phase I studies. JCO 41, 3586-3586(2023).
Kuboki Y, Fakih M, Strickler J, Yaeger R, Masuishi T, Kim EJ, Bestvina CM, Kopetz S, Falchook GS, Langer C, Krauss J, Puri S, Cardona P, Chan E, Varrieur T, Mukundan L, Anderson A, Tran Q, Hong DS. Sotorasib with panitumumab in chemotherapy-refractory KRASG12C-mutated colorectal cancer: a phase 1b trial. Nat Med. 2024 Jan;30(1):265-270. doi: 10.1038/s41591-023-02717-6. Epub 2024 Jan 4.
Kefeng Ding, PhD
Second Affiliated Hospital, Zhejiang University, School of Medicine
First Submitted
May 6, 2026
First Posted
May 12, 2026
Study Start
April 30, 2026
Actual (reported)Primary Completion
December 2028
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Contact the study team to confirm eligibility.
Yuan Y, Deng Y, Jin Y, Guo Z, Pan Y, Wang C, Wang Z, Hu Y, Hua D, Meng X, Zhang Z, Zhao M, Dong X, Huang D, Li X, Liu L, Sun M, Wang H, Wang X, Yang N, Zhang M, Hu S, Wu D, Huang J, Zhang S, Huang M, Ding K. Efficacy and safety of IBI351 (fulzerasib) monotherapy in KRASG12C inhibitor-naive Chinese patients with KRASG12C-mutated metastatic colorectal cancer: a pooled analysis from phase I part of two studies. Signal Transduct Target Ther. 2025 Jul 25;10(1):241. doi: 10.1038/s41392-025-02315-7.
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Study Completion
December 2031
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
May 12, 2026
Record last verified: 2026-05
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Source: ClinicalTrials.gov.
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