Over 70 percent of patients in the first-line subgroup responded to amivantamab plus chemotherapy with most responses lasting beyond 16 months
Notable responses were also seen in patients with liver metastases, who often face poorer outcomes with this disease
RARITAN, NJ, January 10, 2026 – Johnson & Johnson (NYSE:JNJ) today announced new longer follow-up results from the investigational Phase 1b/2 OrigAMI-1 study evaluating amivantamab-vmjw, a bispecific antibody targeting epidermal growth factor receptor (EGFR) and MET, in combination with FOLFOX or FOLFIRI chemotherapy in patients with RAS/BRAF wild-type metastatic colorectal cancer. The encouraging anti-tumor activity, durable responses, and low rates of treatment-related discontinuations observed in this study support further investigation in ongoing Phase 3 studies in first- and second-line colorectal cancer. Results were presented during a poster session at the 2026 American Society of Clinical Oncology Gastrointestinal Cancers (ASCO GI) Symposium (Abstract #166).1
“These results show the potential of amivantamab combined with chemotherapy to deliver meaningful and durable benefit for people with advanced colorectal cancer, including for those with liver metastases who have historically faced poorer outcomes,” said Dr. Filippo Pietrantonio,* M.D., Head of the Gastrointestinal Oncology Unit, IRCCS Foundation, National Cancer Institute, Milan, Italy. “Seeing patients maintain responses for extended periods, some beyond two years, is a powerful sign of progress in a disease where sustained efficacy has been hard to achieve and speaks to the promise of this treatment approach.”
Colorectal cancer is the third most commonly diagnosed cancer worldwide, and a leading cause of cancer-related death.2 While traditionally seen in older adults, incidence is rising in people under 50.3 More than half of patients will eventually develop metastatic disease, with liver involvement in roughly 70 percent of cases. In this setting, resistance to current first-line therapies often develops early, shortening the time patients can benefit.4 For those with RAS/BRAF wild-type metastatic colorectal cancer with disease progression, second-line options remain limited, with historical response rates of 32 to 36 percent and median progression-free survival (PFS) of 5.4 to 6.4 months using EGFR inhibitors and chemotherapy.5,6,7,8,9,10 Research has shown that MET alterations are a frequent cause of resistance to EGFR-inhibition, highlighting a need for new approaches that target both pathways simultaneously.11
Detailed Study Results
Cohorts D and E of the Phase 1b/2 OrigAMI-1 study evaluated intravenous amivantamab as monotherapy or in combination with either FOLFOX or FOLFIRI chemotherapy in patients with RAS/BRAF wild-type metastatic colorectal cancer. Patients were confirmed to be negative for KRAS, NRAS, BRAF and EGFR mutations, and did not have HER2 amplification. They could have received one prior line of systemic therapy in the metastatic setting, and prior treatment with an EGFR inhibitor was not permitted. The primary endpoint was safety, and secondary endpoints included overall response rate (ORR), duration of response (DOR), clinical benefit rate, and PFS. Overall survival was assessed as an exploratory endpoint.1
At a median follow-up of 16 months (range, 1.2-29.5), amivantamab plus FOLFOX (n=20) or FOLFIRI (n=23) achieved a confirmed ORR of 51 percent (95 percent confidence interval [CI], 36-67) across the study, with responses observed early and a median time to first response of 8.3 weeks (range, 7.3-20.3), along with a median DOR of 9.3 months (95 percent CI, 5.8-14.7). Median PFS was 9.2 months (95 percent CI, 5.4-12.9), and median overall survival was not estimable (NE) (95 percent CI, 16.2-NE). In the first-line subgroup, ORR was 73 percent (95 percent CI, 53-86), with median DOR not yet reached at the time of data cutoff (95 percent CI, 7.3-NE). Among 11 patients treated in the first-line subgroup, four were able to proceed to curative intent surgery. In the second-line subgroup (n=32), ORR was 44 percent (95 percent CI, 26-62) and median DOR was 7.4 months (95 percent CI, 5.4-14.5). More than one-third of patients treated in the second-line setting remained on therapy for over one year, and three patients have stayed on amivantamab treatment for more than two years. In patients with liver metastases (n=30), the study showed notable activity, with an ORR of 57 percent (95 percent CI, 37-75) and a median PFS of 11.3 months (95 percent CI, 5.9-16.4).1
The safety profile remained consistent with prior reports of amivantamab plus chemotherapy in colorectal cancer and with the known safety profiles of the individual agents. Treatment-emergent adverse events were primarily related to EGFR and MET inhibition and known chemotherapy-associated effects. Four patients (9 percent) discontinued therapy due to treatment-related adverse events. The most common Grade 3 or higher event was neutropenia, and no new safety signals were observed.1
“Treatment for metastatic colorectal cancer has remained largely unchanged for many years, underscoring the need for new strategies,” said Kiran Patel, M.D., Vice President, Global Head, Solid Tumor Clinical Development and Companion Diagnostics, Johnson & Johnson Innovative Medicine. “We are drawing on our scientific leadership in EGFR-driven lung cancer to evaluate the potential of amivantamab, and its dual-targeting of EGFR and MET, in colorectal cancer and other solid tumors driven by these pathways.”
Pivotal Phase 3 studies, including the global, randomized OrigAMI-2 and OrigAMI-3 studies evaluating subcutaneous amivantamab with FOLFOX and FOLFIRI, are underway to further evaluate the potential of amivantamab-based regimens in both first- and second-line colorectal cancer.
About the OrigAMI-1 Study
OrigAMI-1 (NCT05379595) is an open-label, Phase 1b/2 study assessing the efficacy and safety of RYBREVANT® plus mFOLFOX6 or FOLFIRI in anti-EGFR-naïve RAS/BRAF WT mCRC. Eligible patients were wild-type (WT) for KRAS, NRAS or BRAF genes based on circulating tumor DNA testing. Additionally, patients were required to have no amplification of the ERBB2/HER2 gene. In the RYBREVANT® and chemotherapy cohorts, patients were either treatment-naïve or had received at least one prior line in the metastatic setting (no EGFR inhibitor treatment). The primary endpoint of the combination cohorts was to characterize the safety and confirm the dose of RYBREVANT® plus mFOLFOX6 or FOLFIRI. Response was assessed by the investigator per RECIST v1.1.12
About Colorectal Cancer
Colorectal cancer is the third most common cancer worldwide, accounting for approximately 10 percent of all cancer cases, and is the second leading cause of cancer-related deaths worldwide.2 While it predominantly affects older individuals, recent research suggests that colorectal cancer is now being diagnosed in adults under the age of 50 at record rates.3
Left-sided colorectal cancer, which represents approximately 65 percent of cases, often has distinct characteristics that influence treatment strategies. Around half of colorectal cancer patients have mutations in the RAS genes, with KRAS being the most common mutation. While tumors with normal RAS and BRAF genes generally respond better to EGFR inhibitors, those with RAS and BRAF mutations – particularly on the left side – are associated with poorer outcomes.13
About RYBREVANT®
RYBREVANT® (amivantamab-vmjw), a fully-human bispecific antibody targeting EGFR and MET with immune cell-directing activity, is approved in the U.S., Europe and other markets around the world as monotherapy for the treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 20 insertion mutations, as detected by an FDA-approved test, whose disease has progressed on or after platinum-based chemotherapy.14
RYBREVANT® is approved in the U.S., Europe and other markets around the world in combination with chemotherapy (carboplatin and pemetrexed) for the first-line treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 20 insertion mutations, as detected by an FDA-approved test.
RYBREVANT® is approved in the U.S., Europe and other markets around the world in combination with LAZCLUZE® (lazertinib) for the first-line treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or exon 21 L858R substitution mutations, as detected by an FDA-approved test.
RYBREVANT® is approved in the U.S., Europe and other markets around the world in combination with chemotherapy (carboplatin-pemetrexed) for the treatment of adult patients with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or L858R substitution mutations, whose disease has progressed on or after treatment with an EGFR TKI.
RYBREVANT FASPRO™ (amivantamab and hyaluronidase-lpuj) is approved in the U.S., Europe and other markets around the world in combination with LAZCLUZE® for the first-line treatment of adult patients with advanced NSCLC with EGFR exon 19 deletions or exon 21 L858R substitution mutations, and as a monotherapy for the treatment of adult patients with advanced NSCLC with activating EGFR exon 20 insertion mutations after failure of platinum-based therapy.
The National Comprehensive Cancer Network® (NCCN®) Clinical Practice Guidelines in Oncology (NCCN Guidelines®)§15 include amivantamab-vmjw (RYBREVANT®) across multiple treatment settings, including its recent inclusion as a NCCN Category 1 preferred option when used with lazertinib (LAZCLUZE®) for first-line treatment of people with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or exon 21 L858R mutations; see the latest NCCN Guidelines® for NSCLC for complete information. †‡
The NCCN Guidelines for Central Nervous System Cancers also identify amivantamab-vmjw (RYBREVANT®)-based regimens, including the combination with lazertinib (LAZCLUZE®), as the only NCCN-preferred combination options for patients with EGFR-mutated NSCLC and brain metastases.†‡
In addition to the Phase 1b/2 OrigAMI-1 study, RYBREVANT® is being studied in multiple clinical trials, including:
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The Phase 3 MARIPOSA (NCT04487080) study assessing RYBREVANT® in combination with LAZCLUZE® versus osimertinib and versus LAZCLUZE® alone in the first-line treatment of patients with locally advanced or metastatic NSCLC with EGFR ex19del or substitution mutations.16
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The Phase 3 MARIPOSA-2 (NCT04988295) study assessing the efficacy of RYBREVANT® (with or without LAZCLUZE®) and carboplatin-pemetrexed versus carboplatin-pemetrexed alone in patients with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or L858R substitution mutations after disease progression on or after osimertinib.17
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The Phase 3 PAPILLON (NCT04538664) study assessing RYBREVANT® in combination with carboplatin-pemetrexed versus chemotherapy alone in the first-line treatment of patients with advanced or metastatic NSCLC with EGFR exon 20 insertion mutations.18
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The Phase 3 PALOMA-3 (NCT05388669) study assessing LAZCLUZE® with subcutaneous (SC) amivantamab compared to RYBREVANT® in patients with EGFR-mutated advanced or metastatic NSCLC.19
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The Phase 2 PALOMA-2 (NCT05498428) study assessing SC amivantamab in patients with advanced or metastatic solid tumors including EGFR-mutated NSCLC.20
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The Phase 1 PALOMA (NCT04606381) study assessing the feasibility of SC amivantamab based on safety and pharmacokinetics and to determine a dose, dose regimen and formulation for SC amivantamab delivery.21
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The Phase 1 CHRYSALIS (NCT02609776) study evaluating RYBREVANT® in patients with advanced NSCLC.22
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The Phase 1/1b CHRYSALIS-2 (NCT04077463) study evaluating RYBREVANT® in combination with LAZCLUZE® and LAZCLUZE® as a monotherapy in patients with advanced NSCLC with EGFR mutations.23
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The Phase 1/2 METalmark (NCT05488314) study assessing RYBREVANT® and capmatinib combination therapy in locally advanced or metastatic NSCLC.24
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The Phase 1/2 swalloWTail (NCT06532032) study assessing RYBREVANT® and docetaxel combination therapy in patients with metastatic NSCLC.25
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The Phase 1/2 PolyDamas (NCT05908734) study assessing RYBREVANT® and cetrelimab combination therapy in locally advanced or metastatic NSCLC.26
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The Phase 2 SKIPPirr (NCT05663866) study exploring how to decrease the incidence and/or severity of first-dose infusion-related reactions with RYBREVANT® in combination with LAZCLUZE® in relapsed or refractory EGFR-mutated advanced or metastatic NSCLC.27
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The Phase 2 COPERNICUS (NCT06667076) study combining developments in treatment administration and prophylactic supportive care in representative US patients with common EGFR-mutated NSCLC treated with SC amivantamab in combination with LAZCLUZE® or chemotherapy.28
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The Phase 2 COCOON (NCT06120140) study assessing the effectiveness of a proactive dermatologic management regimen given with first-line RYBREVANT® and LAZCLUZE® in patients with EGFR-mutated advanced NSCLC.29
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The Phase 3 OrigAMI-2 (NCT06662786) study assessing subcutaneous amivantamab and mFOLFOX6 or FOLFIRI in patients with KRAS/NRAS and BRAF wild-type unresectable or metastatic left-sided colorectal cancer.30
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The Phase 3 OrigAMI-3 (NCT06750094) study assessing subcutaneous amivantamab and FOLFIRI in patients with KRAS/NRAS and BRAF wild-type recurrent, unresectable or metastatic colorectal cancer after disease progression on chemotherapy.31
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The Phase 1b/2 OrigAMI-4 (NCT06385080) study assessing RYBREVANT® monotherapy and in addition to standard-of-care therapeutic agents in patients with recurrent/metastatic head and neck squamous cell carcinoma.32
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The Phase 3 OrigAMI-5 (NCT07276399) study assessing SC amivantamab with pembrolizumab and carboplatin in patients with recurrent/metastatic head and neck squamous cell carcinoma.33
The legal manufacturer for RYBREVANT® is Janssen Biotech, Inc.
About Johnson & Johnson
At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow and profoundly impact health for humanity.
Footnotes
*Dr. Filippo Pietrantonio, M.D. has served as a consultant to Johnson & Johnson; he has not been paid for any media work.
§The NCCN Content does not constitute medical advice and should not be used in place of seeking professional medical advice, diagnosis or treatment by licensed practitioners. NCCN makes no warranties of any kind whatsoever regarding their content, use or application and disclaims any responsibility for their application or use in any way.
†See the NCCN Guidelines for detailed recommendations, including other treatment options.
‡The NCCN Guidelines for NSCLC provide recommendations for certain individual biomarkers that should be tested and recommend testing techniques but do not endorse any specific commercially available biomarker assays or commercial laboratories.
1 Chen E, et al. Amivantamab plus FOLFOX or FOLFIRI in RAS/BRAF wild-type metastatic colorectal cancer: Long-term follow-up from the phase 1b/2 OrigAMI-1 study. Presented at: 2026 American Society of Clinical Oncology (ASCO) Gastrointestinal Cancers Symposium; January 10, 2026; San Franscico, California.
2 Cervantes A, Adams R, et al. Metastatic colorectal cancer: ESMO Clinical Practice Guideline for diagnosis, treatment and follow-up. Ann Oncol. 2023;34(1):10-32. doi:10.1016/j.annonc.2022.10.003
3 Virostko J, et al. Recent trends in the age at diagnosis of colorectal cancer in the US National Cancer Data Base, 2004-2015. Cancer. 2019;125:3828-3835. https://doi.org/10.1002/cncr.32347
4 Patel RK, Rahman S, Schwantes IR, et al. Updated management of colorectal cancer liver metastases: scientific advances driving modern therapeutic innovations. Cell Mol Gastroenterol Hepatol. 2023;16(6):881-894. doi:10.1016/j.jcmgh.2023.08.012
5 Grothey A, Lenz HJ. Exploring new treatments for advanced colorectal cancer: current standards and future directions. Cancer Treat Rev. 2020;86:102017. doi:10.1016/j.ctrv.2020.102017
6 Kumar A, Gautam V, et al. Current and emerging therapeutic approaches for colorectal cancer: A comprehensive review. World J Gastrointest Surg. 2023;15(4):495-519. doi:10.4240/wjgs.v15.i4.495
7 Iwamoto S, Hazama S, Kato T, et al. Multicenter phase II study of second-line cetuximab plus folinic acid/5-fluorouracil/irinotecan (FOLFIRI) in KRAS wild-type metastatic colorectal cancer: the FLIER study. Anticancer Res. 2014;34(4):1967-1973.
8 Peeters M, Price TJ, Cervantes A, et al. Final results from a randomized phase 3 study of FOLFIRI {+/-} panitumumab for second-line treatment of metastatic colorectal cancer. Ann Oncol. 2014;25(1):107-116. doi:10.1093/annonc/mdt523
9 Santini A, Lenz HJ, Eng C, et al. Extended RAS analysis of the phase III EPIC trial: irinotecan plus cetuximab versus irinotecan as second-line treatment for patients with metastatic colorectal cancer. Oncologist. 2021;26(2):e261-e269. doi:10.1002/onco.13591
10 Peeters M, Oliner KS, Price TJ, et al. Analysis of KRAS/NRAS Mutations in a Phase III Study of Panitumumab with FOLFIRI Compared with FOLFIRI Alone as Second-line Treatment for Metastatic Colorectal Cancer. Clin Cancer Res. 2015;21(24):5469-5479. doi:10.1158/1078-0432.CCR-15-0526
11 Feldt SL, Bestvina CM. The Role of MET in Resistance to EGFR Inhibition in NSCLC: A Review of Mechanisms and Treatment Implications. Cancers (Basel). 2023;15(11):2998. doi:10.3390/cancers15112998
12 ClinicalTrials.gov. A Study of Amivantamab Monotherapy and in Addition to Standard-of-Care Chemotherapy in Participants With Advanced or Metastatic Colorectal Cancer (OrigAMI-1). https://clinicaltrials.gov/study/NCT05379595?tab=history&a=1. Accessed January 2026.
13 Lieu CH, et al. Integrating biomarkers and targeted therapy into colorectal cancer management. Am Soc Clin Oncol Educ Book. 2019;39:207-215. doi:10.1200/EDBK_240839
14 RYBREVANT® Prescribing Information. Horsham, PA: Janssen Biotech, Inc.
15 Referenced with permission from the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) for Non-Small Cell Lung Cancer V.3.2026 © National Comprehensive Cancer Network, Inc. All rights reserved. To view the most recent and complete version of the guideline, go online to NCCN.org. Accessed January 2026.
16 ClinicalTrials.gov. A Study of Amivantamab and Lazertinib Combination Therapy Versus Osimertinib in Locally Advanced or Metastatic Non-Small Cell Lung Cancer (MARIPOSA). https://classic.clinicaltrials.gov/ct2/show/NCT04487080. Accessed January 2026.
17 ClinicalTrials.gov. A Study of Amivantamab and LAZCLUZE® in Combination With Platinum-Based Chemotherapy Compared With Platinum-Based Chemotherapy in Patients With Epidermal Growth Factor Receptor (EGFR)-Mutated Locally Advanced or Metastatic Non-Small Cell Lung Cancer After Osimertinib Failure (MARIPOSA-2). Available at: https://classic.clinicaltrials.gov/ct2/show/study/NCT04988295. Accessed January 2026.
18 ClinicalTrials.gov. A Study of Combination Amivantamab and Carboplatin-Pemetrexed Therapy, Compared With Carboplatin-Pemetrexed, in Participants With Advanced or Metastatic Non-Small Cell Lung Cancer Characterized by Epidermal Growth Factor Receptor (EGFR) Exon 20 Insertions (PAPILLON). Available at: https://clinicaltrials.gov/ct2/show/NCT04538664. Accessed January 2026.
19 ClinicalTrials.gov. A Study of LAZCLUZE® With Subcutaneous Amivantamab Compared With Intravenous Amivantamab in Participants With Epidermal Growth Factor Receptor (EGFR)-Mutated Advanced or Metastatic Non-small Cell Lung Cancer (PALOMA 3). https://clinicaltrials.gov/ct2/show/NCT05388669. Accessed January 2026.
20 ClinicalTrials.gov. A Study of Amivantamab in Participants With Advanced or Metastatic Solid Tumors Including Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer (PALOMA-2). https://clinicaltrials.gov/ct2/show/NCT05498428. Accessed January 2026.
21 ClinicalTrials.gov. A Study of Amivantamab Subcutaneous (SC) Administration for the Treatment of Advanced Solid Malignancies (PALOMA). Available at: https://clinicaltrials.gov/study/NCT04606381. Accessed January 2026.
22 ClinicalTrials.gov. A Study of Amivantamab, a Human Bispecific EGFR and cMet Antibody, in Participants With Advanced Non-Small Cell Lung Cancer (CHRYSALIS). https://clinicaltrials.gov/ct2/show/NCT02609776. Accessed January 2026.
23 ClinicalTrials.gov. A Study of LAZCLUZE® as Monotherapy or in Combination With Amivantamab in Participants With Advanced Non-small Cell Lung Cancer (CHRYSALIS-2). https://clinicaltrials.gov/ct2/show/NCT04077463. Accessed January 2026.
24 ClinicalTrials.gov. A Study of Amivantamab and Capmatinib Combination Therapy in Unresectable Metastatic Non-small Cell Lung Cancer (METalmark). https://clinicaltrials.gov/study/NCT05488314. Accessed January 2026.
25 ClinicalTrials.gov. A Study of Combination Therapy With Amivantamab and Docetaxel in Participants With Metastatic Non-small Cell Lung Cancer (swalloWTail). https://clinicaltrials.gov/study/NCT06532032. Accessed January 2026.
26 ClinicalTrials.gov. A Study of Combination Therapy With Amivantamab and Cetrelimab in Participants With Metastatic Non-small Cell Lung Cancer (PolyDamas). https://clinicaltrials.gov/study/NCT05908734. Accessed January 2026.
27 ClinicalTrials.gov. Premedication to Reduce Amivantamab Associated Infusion Related Reactions (SKIPPirr). https://clinicaltrials.gov/study/NCT05663866. Accessed January 2026.
28 ClinicalTrials.gov. A Study of Amivantamab in Combination With Lazertinib, or Amivantamab in Combination With Platinum-Based Chemotherapy, for Common Epidermal Growth Factor Receptor (EGFR)-Mutated Locally Advanced or Metastatic Non-Small Cell Lung Cancer (NSCLC) (COPERNICUS). https://clinicaltrials.gov/study/NCT06667076. Accessed January 2026.
29 ClinicalTrials.gov. Enhanced Dermatological Care to Reduce Rash and Paronychia in Epidermal Growth Factor Receptor (EGRF)-Mutated Non-Small Cell Lung Cancer (NSCLC) Treated First-line With Amivantamab Plus Lazertinib (COCOON). https://www.clinicaltrials.gov/study/NCT06120140. Accessed January 2026.
30 ClinicalTrials.gov. A Study of Amivantamab and mFOLFOX6 or FOLFIRI Versus Cetuximab and mFOLFOX6 or FOLFIRI as First-line Treatment in Participants With KRAS/ NRAS and BRAF Wild-type Unresectable or Metastatic Left-sided Colorectal Cancer (OrigAMI-2). https://clinicaltrials.gov/study/NCT06662786. Accessed January 2026.
31 ClinicalTrials.gov. A Study of Amivantamab and FOLFIRI Versus Cetuximab/ Bevacizumab and FOLFIRI in Participants With KRAS/ NRAS and BRAF Wild-type Colorectal Cancer Who Have Previously Received Chemotherapy (OrigAMI-3). https://clinicaltrials.gov/study/NCT06750094. Accessed January 2026.
32 ClinicalTrials.gov. A Study of Amivantamab Alone or in Addition to Other Treatment Agents in Participants With Recurrent/ Metastatic Head and Neck Cancer (OrigAMI-4). https://clinicaltrials.gov/study/NCT06385080. Accessed January 2026.
33 ClinicalTrials.gov. A Study of Amivantamab in Addition to Standard of Care Agents (SOC) Compared With SOC Alone in Participants With Recurrent/ Metastatic Head and Neck Cancer (OrigAMI-5). https://clinicaltrials.gov/study/NCT07276399. Accessed January 2026.
34 LAZCLUZE® Prescribing Information. Horsham, PA: Janssen Biotech, Inc.