MARIPOSA

Podcasts, YouTube videos and X posts in our index that name this trial. A report screens them, searches for more and cites what clinicians said when it is built. Commentary is thin so far, so the report would be short.

Official title

A Phase 3, Randomized Study of Amivantamab and Lazertinib Combination Therapy Versus Osimertinib Versus Lazertinib as First-Line Treatment in Patients With EGFR-Mutated Locally Advanced or Metastatic Non-Small Cell Lung Cancer.

Phase

Phase 3

Status

Active not recruiting

Conditions

Carcinoma, Non-Small-Cell Lung

Interventions

Amivantamab; Osimertinib; Lazertinib; Placebo

Arms

• Treatment Arm A (Open-label): Amivantamab and Lazertinib · Experimental
• Treatment Arm B (Double-blind): Osimertinib+Placebo Lazertinib · Active comparator
• Treatment Arm C (Double-blind): Lazertinib+Placebo Osimertinib · Experimental

Enrollment

1,074

Primary outcomes

• Progression-Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 as Assessed by Blinded Independent Central Review (BICR)

Sponsor

Janssen Research & Development, LLC

Start

Sep 30, 2020

Primary completion

Aug 11, 2023

Results posted

Yes

Registry record

NCT04487080 · updated Sep 28, 2026

• Yang JC, Lu S, Hayashi H, Felip E, Spira AI, Girard N, Kim YJ, Lee SH, Ostapenko Y, Danchaivijitr P, Liu B, Alip A, Korbenfeld E, Mourao Dias J, Besse B, Passaro A, Lee KH, Xiong H, How SH, Cheng Y, Chang GC, Yoshioka H, Thomas M, Nguyen D, Ou SI, Mukhedkar S, Prabhash K, D'Arcangelo M, Alatorre-Alexander J, Vazquez Limon JC, Alves S, Stroyakovskiy D, Peregudova M, Sendur MAN, Yazici O, Califano R, Gutierrez Calderon V, de Marinis F, Kim SW, Gadgeel SM, Owen S, Xie J, Sun T, Mehta J, Venkatasubramanian R, Ennis M, Fennema E, Daksh M, Roshak A, Man J, Knoblauch RE, Bauml JM, Baig M, Shah S, Sethi S, Cho BC; MARIPOSA Investigators. Overall Survival with Amivantamab-Lazertinib in EGFR-Mutated Advanced NSCLC. N Engl J Med. 2025 Oct 30;393(17):1681-1693. doi: 10.1056/NEJMoa2503001. Epub 2025 Sep 7. PubMed 40923797
• Lee SH, Lu S, Hayashi H, Felip E, Spira AI, Girard N, Kim YJ, Ostapenko Y, Danchaivijitr P, Liu B, Alip A, Korbenfeld E, Dias JM, Lee KH, Xiong H, How SH, Cheng Y, Chang GC, Chih-Hsin Yang J, Besse B, Thomas M, Shah S, Baig M, Curtin JC, Zhang J, Xie J, Sun T, Sethi S, Wang M, Fennema E, Daksh M, Ennis M, Bauml JM, Cho BC. Lazertinib Versus Osimertinib in Previously Untreated EGFR-Mutant Advanced NSCLC: A Randomized, Double-Blind, Exploratory Analysis From MARIPOSA. J Thorac Oncol. 2025 Nov;20(11):1655-1668. doi: 10.1016/j.jtho.2025.06.030. Epub 2025 Jul 3. PubMed 40617394
• Cho BC, Lu S, Felip E, Spira AI, Girard N, Lee JS, Lee SH, Ostapenko Y, Danchaivijitr P, Liu B, Alip A, Korbenfeld E, Mourao Dias J, Besse B, Lee KH, Xiong H, How SH, Cheng Y, Chang GC, Yoshioka H, Yang JC, Thomas M, Nguyen D, Ou SI, Mukhedkar S, Prabhash K, D'Arcangelo M, Alatorre-Alexander J, Vazquez Limon JC, Alves S, Stroyakovskiy D, Peregudova M, Sendur MAN, Yazici O, Califano R, Gutierrez Calderon V, de Marinis F, Passaro A, Kim SW, Gadgeel SM, Xie J, Sun T, Martinez M, Ennis M, Fennema E, Daksh M, Millington D, Leconte I, Iwasawa R, Lorenzini P, Baig M, Shah S, Bauml JM, Shreeve SM, Sethi S, Knoblauch RE, Hayashi H; MARIPOSA Investigators. Amivantamab plus Lazertinib in Previously Untreated EGFR-Mutated Advanced NSCLC. N Engl J Med. 2024 Oct 24;391(16):1486-1498. doi: 10.1056/NEJMoa2403614. Epub 2024 Jun 26. PubMed 38924756
• Cho BC, Felip E, Hayashi H, Thomas M, Lu S, Besse B, Sun T, Martinez M, Sethi SN, Shreeve SM, Spira AI. MARIPOSA: phase 3 study of first-line amivantamab + lazertinib versus osimertinib in EGFR-mutant non-small-cell lung cancer. Future Oncol. 2022 Feb;18(6):639-647. doi: 10.2217/fon-2021-0923. Epub 2021 Dec 16. PubMed 34911336