Median overall survival, a secondary endpoint, reached nearly 3.5 years with Johnson & Johnson's RYBREVANT® plus LAZCLUZE® in atypical EGFR-mutated disease
Consistent responses observed across atypical EGFR mutation subgroups, including those historically associated with poorer outcomes
ASCO 2026 results reinforce the significance of RYBREVANT®-based regimens for patients across EGFR mutations
May 29, 2026 -- Johnson & Johnson (NYSE:JNJ) today announced updated results from the Phase 1/1b CHRYSALIS-2 study evaluating intravenous RYBREVANT® (amivantamab-vmjw) in combination with LAZCLUZE® (lazertinib) in patients with advanced non-small cell lung cancer (NSCLC) with atypical epidermal growth factor receptor (EGFR) mutations. The analysis showed encouraging long-term outcomes with RYBREVANT® plus LAZCLUZE® in this difficult-to-treat population. Median overall survival, a secondary endpoint, was nearly 3.5 years.1 The primary endpoint of objective response rate was previously reported.2 These results add to the growing body of evidence demonstrating the potential of RYBREVANT® plus LAZCLUZE® to deliver durable survival outcomes across both common and atypical EGFR-mutated advanced NSCLC in the first-line setting. Data were presented in an oral session at the 2026 American Society of Clinical Oncology (ASCO) Annual Meeting (Abstract #8501).1
Patients with atypical EGFR-mutated NSCLC tend to have poorer outcomes than those with common EGFR mutations (exon 19 deletions and L858R substitutions), and effective first-line treatment options remain limited.3,4 These mutations represent approximately 10-20 percent of all EGFR-mutated cases.5 Median overall survival with current standard of care single-agent therapies remains under two years, highlighting a significant unmet need for treatments that can deliver more durable benefit in this setting.6,7 RYBREVANT® is designed to dual target EGFR and mesenchymal-epithelial transition (MET), while engaging the immune system.8,9,10,11 These complementary mechanisms play a central role in tumor growth and treatment resistance and may help address the underlying drivers of disease.
"For patients with non-small cell lung cancer harboring atypical EGFR-mutations, first-line treatment decisions are often clouded by uncertainty regarding the efficacy of currently available EGFR tyrosine kinase inhibitors," said Joel Neal,* M.D., Ph.D., principal investigator of the Phase 1/1b CHRYSALIS-2 study. "The responses we've seen in this trial suggest the potential for more durable disease control, and the overall survival data reinforce that picture. These long-term outcomes begin to change how we think about treatment options in managing this subtype of lung cancer." Neal is also a Professor of Medicine in the Division of Oncology at Stanford Medicine.
"Disease progression and molecular resistance remain critical barriers in EGFR-mutated non-small cell lung cancer," said Yusri Elsayed, M.D., M.H.Sc., Ph.D., Global Therapeutic Area Head, Oncology, Johnson & Johnson. "RYBREVANT-based combinations demonstrate the power of changing the biology by addressing multiple disease drivers from the start rather than relying on single-pathway strategies. With strong outcomes across all known EGFR mutations, this approach is raising the bar for what first-line treatment can achieve."
In Cohort C of the CHRYSALIS-2 study, RYBREVANT® plus LAZCLUZE® was evaluated as a first-line treatment in patients with atypical EGFR-mutated advanced NSCLC, excluding EGFR exon 20 insertion mutations (n=49). The most common atypical EGFR mutations included G719X (55 percent), S768X (27 percent) and L861X (24 percent), with 35 percent of patients harboring multiple atypical mutations. The study previously reported an objective response rate of 57 percent (primary endpoint).1,2
Median overall survival with RYBREVANT® plus LAZCLUZE® reached nearly 3.5 years (41.0 months; 95 percent confidence interval [CI], 27.7-not estimable) at a median follow-up of 31.3 months. Overall survival rates were 55 percent at three years and 46 percent at four years.1
Consistent clinical activity was observed across atypical EGFR mutation subgroups, as well as across patient and disease characteristics such as central nervous system metastases and TP53 status. Patients were also able to remain on treatment long-term across mutation groups and baseline characteristics. Notably, 41 percent of patients remained on RYBREVANT® for two years or longer, further supporting the durable survival observed with this combination.1
The safety profile of RYBREVANT® plus LAZCLUZE® was consistent with previous reports, with no new safety signals observed with longer follow-up. Most adverse events were Grade 1 or 2. The most common treatment-emergent adverse events occurring in more than 30 percent of patients included paronychia (78 percent), rash (65 percent), hypoalbuminemia (61 percent) and infusion-related reactions (61 percent).1
RYBREVANT®-based regimens are approved for patients with EGFR-mutated advanced NSCLC across common (exon 19 deletions and exon 21 L858R substitution mutations) and exon 20 insertion mutations, including in the first-line setting.12 These results further define long-term outcomes with first-line RYBREVANT® plus LAZCLUZE® for patients with atypical EGFR mutations. Additional data being presented at ASCO 2026 in lung, head and neck, and colorectal cancers underscore the broader potential of RYBREVANT® across tumor types.
CHRYSALIS-2 (NCT04077463) is an open-label Phase 1/1b study to evaluate the safety and pharmacokinetics of LAZCLUZE®, a third-generation EGFR-TKI, as monotherapy or in combinations with RYBREVANT®, a human bispecific EGFR and cMet antibody in participants with advanced NSCLC. The study enrolled 460 patients with advanced NSCLC.13
Cohort C of the ongoing CHRYSALIS-2 study evaluates patients with atypical EGFR-mutated advanced NSCLC, excluding exon 20 insertion and classical EGFR mutations, who are treatment-naïve or have received up to two prior lines of therapy. Patients received intravenous RYBREVANT® in combination with LAZCLUZE® administered orally once daily.13
Worldwide, lung cancer is one of the most common cancers, with NSCLC making up 80 to 85 percent of all lung cancer cases.14,15 The main subtypes of NSCLC are adenocarcinoma, squamous cell carcinoma, and large cell carcinoma.16 Among the most common driver mutations in NSCLC are alterations in EGFR, which is a receptor tyrosine kinase controlling cell growth and division.17 EGFR mutations are present in 10 to 15 percent of Western patients with NSCLC with adenocarcinoma histology and occur in 40 to 50 percent of Asian patients.14,15,18,19,20,21 EGFR ex19del or EGFR L858R mutations are the most common EGFR mutations.22 The five-year survival rate for all people with advanced NSCLC and EGFR mutations treated with EGFR tyrosine kinase inhibitors (TKIs) is less than 20 percent.23,24 EGFR exon 20 insertion mutations are the third-most prevalent activating EGFR mutation.25 Patients with EGFR exon 20 insertion mutations have a real-world five-year overall survival (OS) of eight percent in the frontline setting, which is worse than patients with EGFR ex19del or L858R mutations, who have a real-world five-year OS of 19 percent.26
RYBREVANT FASPRO™ (amivantamab and hyaluronidase-lpuj) received U.S. FDA approval in December 2025 and is approved in multiple markets worldwide for the treatment of adults with EGFR-mutated non-small cell lung cancer (NSCLC), including those with exon 19 deletions, exon 21 L858R substitution mutations, and exon 20 insertion mutations. It is the only subcutaneous therapy approved in these populations and can be used as monotherapy or in combination with LAZCLUZE® (lazertinib) or chemotherapy in the front- and second-line settings, offering convenient monthly† or bi-weekly dosing. RYBREVANT FASPRO™ is co-formulated with recombinant human hyaluronidase PH20 (rHuPH20), Halozyme's ENHANZE® drug delivery technology.
RYBREVANT® (amivantamab-vmjw), administered intravenously, received U.S. FDA approval in March 2024 and is approved for the same indications as RYBREVANT FASPRO™ across multiple markets. RYBERVANT® is a first-in-class, fully human bispecific antibody targeting EGFR and MET, designed to inhibit tumor growth while engaging the immune system.
The effectiveness of RYBREVANT FASPRO™ is supported by the established clinical profile of RYBREVANT®, including data from multiple Phase 3 studies such as MARIPOSA, which demonstrated improvements in progression-free and overall survival when used in combination with LAZCLUZE® in first-line advanced EGFR-mutated NSCLC.
The National Comprehensive Cancer Network® (NCCN®) Clinical Practice Guidelines in Oncology (NCCN Guidelines®)‡ 27 include amivantamab-vmjw (RYBREVANT®) across its FDA-approved treatment settings, including as a Category 1 preferred option in combination with lazertinib (LAZCLUZE®) for first-line treatment of patients with locally advanced or metastatic NSCLC with EGFR exon 19 deletions or exon 21 L858R mutations. Subcutaneous amivantamab and hyaluronidase-lpuj (RYBREVANT FASPRO™) may be substituted for IV amivantamab-vmjw (RYBREVANT®) where appropriate. See the latest NCCN Guidelines® for NSCLC for complete information.§ ||
The NCCN Guidelines for Central Nervous System Cancers also include amivantamab (RYBREVANT®)-based regimens, including in combination with lazertinib (LAZCLUZE®), as the only NCCN-preferred combination options for patients with EGFR-mutated NSCLC and brain metastases.
Beyond NSCLC, RYBREVANT-based therapies are being investigated across other solid tumors, including head and neck and colorectal cancers.
In 2018, Janssen Biotech, Inc., entered into a license and collaboration agreement with Yuhan Corporation for the development of LAZCLUZE® (marketed as LECLAZA in South Korea). LAZCLUZE® is an oral, third-generation, brain-penetrant EGFR TKI that targets both the T790M mutation and activating EGFR mutations while sparing wild-type EGFR. An analysis of the efficacy and safety of LAZCLUZE® from the Phase 3 LASER301 study was published in The Journal of Clinical Oncology in 2023.28
The legal manufacturer for LAZCLUZE® is Janssen Biotech, Inc. and Yuhan Corporation.INDICATIONS
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.
Source: Johnson & Johnson
1 Neal JW, et al. Overall survival of first-line amivantamab plus lazertinib in atypical EGFR-mutated advanced NSCLC: Updated results from the CHRYSALIS-2 study. Presented at: 2026 ASCO Annual Meeting; 2026; Chicago, IL.
2 Tomasini P, Wang Y, Li Y, et al. Amivantamab Plus Lazertinib in Atypical EGFR-Mutated Advanced Non-Small Cell Lung Cancer: Results From CHRYSALIS-2. J Clin Oncol. 2026;44(1):54-65. doi:10.1200/JCO-24-02835
3 Kim EY, Cho EN, Park HS, et al. Compound EGFR mutation is frequently detected with co-mutations of actionable genes and associated with poor clinical outcome in lung adenocarcinoma. Cancer Biol Ther. 2016;17(3):237-245. doi:10.1080/15384047.2016.1139235
4 Patil T, Mushtaq R, Marsh S, et al. Clinicopathologic characteristics, treatment outcomes, and acquired resistance patterns of atypical EGFR mutations and HER2 alterations in stage IV non-small-cell lung cancer. Clin Lung Cancer. 2020;21(3):e191-e204. doi:10.1016/j.cllc.2019.11.008
5 Fabrizio FP, Attili I, de Marinis F. Uncommon and Rare EGFR Mutations in Non-Small Cell Lung Cancer Patients with a Focus on Exon 20 Insertions and the Phase 3 PAPILLON Trial: The State of the Art. Cancers. 2024; 16(7):1331. https://doi.org/10.3390/cancers16071331
6 Yang JC, Sequist LV, Geater SL, et al. Clinical activity of afatinib in patients with advanced non-small-cell lung cancer harbouring uncommon EGFR mutations: a combined post-hoc analysis of LUX-Lung 2, LUX-Lung 3, and LUX-Lung 6. Lancet Oncol. 2015;16(7):830-838. doi:10.1016/S1470-2045(15)00026-1
7 GILOTRIF® (afatinib tablets), for oral use [package insert]. Boehringer Ingelheim Pharmaceuticals, Inc.; 2022.
8 Moores SL, Chiu ML, Bushey BS, et al. A Novel Bispecific Antibody Targeting EGFR and cMet Is Effective against EGFR Inhibitor-Resistant Lung Tumors. Cancer Res. 2016;76(13):3942-3953. doi:10.1158/0008-5472.CAN-15-2833
9 Vijayaraghavan S, Lipfert L, Chevalier K, et al. Amivantamab (JNJ-61186372), an Fc Enhanced EGFR/cMet Bispecific Antibody, Induces Receptor Downmodulation and Antitumor Activity by Monocyte/Macrophage Trogocytosis. Mol Cancer Ther. 2020;19(10):2044-2056. doi:10.1158/1535-7163.MCT-20-0071
10 Yun J, Lee SH, Kim SY, et al. Antitumor Activity of Amivantamab (JNJ-61186372), an EGFR-MET Bispecific Antibody, in Diverse Models of EGFR Exon 20 Insertion-Driven NSCLC. Cancer Discov. 2020;10(8):1194-1209. doi:10.1158/2159-8290.CD-20-0116
11 Asia-Pacific practical consensus in the management of adverse events related to amivantamab-based therapies in non-small cell lung cancer. Lung Cancer. Published online May 22, 2026. doi:10.1016/S0169-5002(26)00466-6.
12 RYBREVANT® Prescribing Information. Horsham, PA: Janssen Biotech, Inc.
13 ClinicalTrials.gov. A Study of Lazertinib as Monotherapy or in Combination With Amivantamab in Participants With Advanced Non-small Cell Lung Cancer (CHRYSALIS-2). Available at: https://clinicaltrials.gov/ct2/show/NCT04077463. Accessed May 2026.
14 The World Health Organization. Cancer. https://www.who.int/news-room/fact-sheets/detail/cancer. Accessed May 2026.
15 American Cancer Society. What is Lung Cancer? https://www.cancer.org/content/cancer/en/cancer/lung-cancer/about/what-is.html. Accessed May 2026.
16 Oxnard JR, et al. Natural history and molecular characteristics of lung cancers harboring EGFR exon 20 insertions. J Thorac Oncol. 2013 Feb;8(2):179-84. doi: 10.1097/JTO.0b013e3182779d18.
17 Bauml JM, et al. Underdiagnosis of EGFR Exon 20 Insertion Mutation Variants: Estimates from NGS-based Real World Datasets. Abstract presented at: World Conference on Lung Cancer Annual Meeting; January 29, 2021; Singapore.
18 Pennell NA, et al. A phase II trial of adjuvant erlotinib in patients with resected epidermal growth factor receptor-mutant non-small cell lung cancer. J Clin Oncol. 37:97-104.
19 Burnett H, et al. Epidemiological and clinical burden of EGFR exon 20 insertion in advanced non-small cell lung cancer: a systematic literature review. Abstract presented at: World Conference on Lung Cancer Annual Meeting; January 29, 2021; Singapore.
20 Zhang YL, et al. The prevalence of EGFR mutation in patients with non-small cell lung cancer: a systematic review and meta-analysis. Oncotarget. 2016;7(48):78985-78993.
21 Midha A, et al. EGFR mutation incidence in non-small-cell lung cancer of adenocarcinoma histology: a systematic review and global map by ethnicity. Am J Cancer Res. 2015;5(9):2892-2911.
22 American Lung Association. EGFR and Lung Cancer. https://www.lung.org/lung-health-diseases/lung-disease-lookup/lung-cancer/symptoms-diagnosis/biomarker-testing/egfr. Accessed May 2026.
23 Howlader N, et al. SEER Cancer Statistics Review, 1975-2016, National Cancer Institute. Bethesda, MD, https://seer.cancer.gov/csr/1975_2016/, based on November 2018 SEER data submission, posted to the SEER web site.
24 Lin JJ, et al. Five-Year Survival in EGFR-Mutant Metastatic Lung Adenocarcinoma Treated with EGFR-TKIs. J Thorac Oncol. 2016 Apr;11(4):556-65.
25 Arcila, M. et al. EGFR exon 20 insertion mutations in lung adenocarcinomas: prevalence, molecular heterogeneity, and clinicopathologic characteristics. Mol Cancer Ther. 2013 Feb; 12(2):220-9.
26 Girard N, et al. Comparative clinical outcomes for patients with NSCLC harboring EGFR exon 20 insertion mutations and common EGFR mutations. Abstract presented at: World Conference on Lung Cancer Annual Meeting; January 29, 2021; Singapore.
27 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 May 2026.
28 Cho BC, et al. Lazertinib versus gefitinib as first-line treatment in patients with EGFR-mutated advanced non-small-cell lung cancer: Results From LASER301. J Clin Oncol. 2023;41(26):4208-4217.
29 LAZCLUZE® Prescribing Information. Horsham, PA: Janssen Biotech, Inc.
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