Navigating Management and Dosing Considerations for Amivantamab in NSCLC

In the first edition of a special podcast series, CancerNetwork^® spoke with Daniel Morgensztern, MD; Mary Ellen Flanagan, NP; and Janelle Mann, PharmD, BCOP, about best practices for implementing recently approved bispecific antibodies into cancer care. Their initial discussion focused on the clinical trial results, administration protocols, and toxicity management strategies related to the use of amivantamab-vmjw (Rybrevant) for patients with EGFR-mutated non–small cell lung cancer (NSCLC).

Morgensztern is a professor of Medicine and clinical director of Thoracic Oncology in the Division of Oncology at Washington University School of Medicine in St. Louis. Flanagan is a nurse practitioner in the Division of Thoracic Oncology at Washington University in St. Louis. Mann is a clinical oncology pharmacist at Siteman Cancer Center of Washington University School of Medicine in St. Louis and manager of Clinical Pharmacy Services at Barnes-Jewish Hospital.

Morgensztern began by giving an overview of amivantamab’s mechanism of action and highlighting supporting data for the agent when administered alone or in combination with other agents.

The FDA initially approved amivantamab monotherapy for patients with EGFR exon 20 insertion–mutant NSCLC in May 2021 based on data from the phase 1 CHRYSALIS trial (NCT02609776).¹ Furthermore, the agency approved amivantamab/chemotherapy as frontline treatment for patients with NSCLC harboring EGFR exon 20 insertion mutations in March 2024 based on data from the phase 3 PAPILLON trial (NCT04538664).² Findings from the phase 3 MARIPOSA trial (NCT04487080) also supported the FDA approval of amivantamab plus lazertinib (Lazcluze) for those with EGFR-mutant NSCLC in August 2024.³

Additionally, Mann reviewed key dosing considerations as patients receive amivantamab via intravenous infusion. She detailed the use of premedication such as diphenhydramine (Benadryl) to supplement amivantamab while monitoring for toxicities during the initial infusion period, which may necessitate additional dosing adjustments. Flanagan added to the conversation surrounding infusion-related reactions by describing strategies for mitigating the risk of venous thromboembolism, cutaneous toxicities, and other adverse effects.

References

1. RYBREVANT^TM (amivantamab-vmjw) receives FDA approval as the first targeted treatment for patients with non-small cell lung cancer with EGFR exon 20 insertion mutations. News release. The Janssen Pharmaceutical Companies of Johnson & Johnson. May 21, 2021. Accessed January 29, 2025. https://tinyurl.com/3d8wtu4m
2. FDA approves amivantamab-vmjw for EGFR exon 20 insertion-mutated non-small cell lung cancer indications. News release. FDA. March 1, 2024. Accessed January 29, 2025. https://tinyurl.com/msw4u5yk
3. RYBREVANT® (amivantamab-vmjw) plus LAZCLUZE™ (lazertinib) approved in the U.S. as a first-line chemotherapy-free treatment for patients with EGFR-mutated advanced lung cancer. News release. Johnson & Johnson. August 20, 2024. Accessed January 29, 2025. https://tinyurl.com/yxc8u8t4