ArriVent Initiates Pivotal Phase 3 Trial for Firmonertinib in Non-Small Cell Lung Cancer
On December 22, 2025, ArriVent BioPharma, Inc. (Nasdaq: AVBP) announced a significant milestone in the fight against non-small cell lung cancer (NSCLC), as the first patient has been dosed in its global pivotal Phase 3 ALPACCA study. This trial evaluates the efficacy of firmonertinib, an innovative oral therapy targeting EGFR PACC mutant NSCLC.
Overview of the ALPACCA Trial
The ALPACCA trial (FURMO-006) aims to assess firmonertinib as a once-daily, oral monotherapy for patients with EGFR PACC mutations, a distinct group within the EGFR mutant NSCLC population. The study is designed to support potential accelerated and full regulatory approvals for this underserved patient demographic.
- Trial Design: Randomized, global Phase 3 study
- Comparator Treatment: Investigator's choice of either osimertinib or afatinib
- Primary Endpoints: Overall response rate (ORR) and progression-free survival (PFS) assessed by blinded independent central review (BICR)
Adopting a firmonertinib dosage of 240 mg once daily, the trial is built upon prior findings which demonstrated a 16-month median PFS and a confirmed 68% ORR in earlier studies.
CEO Commentary and Market Need
Bing Yao, Ph.D., the Chairman and CEO of ArriVent, emphasized the importance of this trial in addressing unmet medical needs. “Patients with EGFR PACC mutant NSCLC currently have limited treatment options,” stated Dr. Yao. He believes firmonertinib is poised to fill this gap, noting its favorable safety profile and broad clinical activity in patients with PACC mutations.
- Market Incidence: Estimated 42,000 patients globally (excluding China) with EGFR PACC mutations, while 6,200 patients are projected in the U.S.
About Firmonertinib and Its Role in Cancer Treatment
Firmonertinib is a highly brain-penetrant, mutation-selective EGFR inhibitor effective against both classical and uncommon EGFR mutations, including PACC. It was first approved in China for advanced NSCLC with EGFR exon 19 deletion or L858R mutations and has since received FDA Breakthrough Therapy Designation for further indications.
The ongoing ALPACCA trial, along with studies like FURVENT, underscores ArriVent's commitment to developing firmonertinib further. This innovative treatment may emerge as a cornerstone therapy for a spectrum of EGFR mutant NSCLC patients.
Understanding EGFR Mutations and the PACC Group
Globally, lung cancer remains the leading cause of cancer-related deaths, with NSCLC accounting for approximately 85% of these cases. EGFR mutations are a frequent and early event in NSCLC development, divided into classical and uncommon types.
- Uncommon Mutations: PACC mutations, representing around 12% of all EGFR mutations, highlight a critical need for targeted therapies.
Patients with PACC mutations typically face poorer outcomes with existing treatment options, further emphasizing the urgency of the ALPACCA trial.
Conclusion and Future Outlook
As ArriVent progresses with the ALPACCA trial, the potential for firmonertinib to redefine treatment standards for EGFR PACC mutant NSCLC patients becomes increasingly evident. With promising data supporting its effectiveness and a clear regulatory pathway ahead, AVBP could signify a significant advancement in oncology.