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Firmonertinib Mesilate

Phase 3

EGFR | Small molecule | Oncology |ArriVent BioPharma, Inc.|Last Updated: Feb 12, 2026

Target and mechanism

Molecular targetEGFR
Target classInhibitor
ModalitySmall molecule

Also known as Firmonertinib Mesilate Tablets

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment300

FDA Designations

BREAKTHROUGH_THERAPYORPHAN_DRUG

Clinical trial landscape

Firmonertinib Mesilate · 1 trial · 2 indications

Phase 3 1
NCT06956001Firmonertinib Versus Platinum Based Chemotherapy as First-line Treatment for NSCLC With EGFR PACC or EGFR l861q MutationEGFR
RECRUITING300 Analytics
PHASE3RECRUITING
Firmonertinib Versus Platinum Based Chemotherapy as First-line Treatment for NSCLC With EGFR PACC or EGFR l861q Mutation
EGFRUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression-free survival (PFS) assessed by the Independent Review Committee (BICR) according to RECIST v1.1.
Up to 3 years

The time from the date of randomization to the date of first documentation of disease progression (assessed according to RECIST v1.1 criteria) or death from any cause, whichever occurred first.

Secondary Endpoints

Overall survival (OS)
Up to 3 years
The incidence and severity of adverse events (AES) were determined according to NCI CTCAE V5.0
Up to 3 years
Patient Reported Outcomes by EORTC QLQ LC13 questionnaire
Up to 3 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
FirmonertinibEXPERIMENTALOral administration, 240mg, QD。
chemotherapyACTIVE_COMPARATORPemetrexed Disodium for Injection: 500mg/m2, intravenous infusion. Cisplatin for injection:75 mg/m2, intravenous infusion. Carboplatin Injection:administered according to the AUC of 5 mg/ml, intravenous infusion.

Interventions

NameTypeDescription
Firmonertinib Mesilate TabletsDRUGUsage and dosage: oral, 240mg, QD。 Medication duration: 21 days as a cycle, until intolerable toxicity, loss of clinical benefit, disease progression (confirmed by BICR), death or other anti-tumor treatment (whichever occurs first).
Pemetrexed Disodium for InjectionDRUGUsage and dosage: 500mg/m2, intravenous infusion. Medication duration: 21 days as a cycle, D1 administration, until the occurrence of intolerable toxicity, loss of clinical benefit, disease progression (confirmed by BICR), death or other anti-tumor treatment (whichever occurs first).
Cisplatin for injectionDRUGUsage and dosage: 75 mg/m2, i.v. Medication duration: 21 days as a cycle, D1 administration, up to 4 cycles.
Carboplatin InjectionDRUGUsage and dosage: give the drug according to AUC 5 mg/ml, intravenous drip. Medication duration: 21 days as a cycle, D1 administration, up to 4 cycles.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: 1. Voluntarily sign the informed consent form (ICF). 2. Age ≥18 years at the time of ICF signing. 3. At least one measurable lesion per RECIST v1.1, meeting the following: * No prior local therapy (e.g., radiotherapy) * Not used for biopsy during screening 4. Histological...

Countries:China
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Recent Changes (Last 90 Days)

LOWMay 24, 2026NCT06956001studyFirstPostDate: changed

Frequently asked questions about Firmonertinib Mesilate

What is Firmonertinib Mesilate used for?

Firmonertinib Mesilate is an investigational small molecule being studied for the treatment of advanced non-small cell lung cancer (NSCLC) with EGFR mutations, specifically EGFR PACC or EGFR L861Q mutations. It is currently in Phase 3 clinical development as a first-line treatment.

What does Firmonertinib Mesilate target?

Firmonertinib Mesilate targets the epidermal growth factor receptor (EGFR), acting as an inhibitor. It is being evaluated in patients with advanced NSCLC who have specific EGFR mutations, including PACC and L861Q mutations, which are biomarkers for patient selection in the ongoing trial.

Who makes Firmonertinib Mesilate?

Firmonertinib Mesilate is being developed by ArriVent BioPharma, Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol AVBP. The company is conducting a Phase 3 clinical trial for this investigational drug.

What phase is Firmonertinib Mesilate in?

Firmonertinib Mesilate is in Phase 3 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The FDA has granted it Breakthrough Therapy and Orphan Drug designations for its intended use in EGFR-mutant NSCLC.

What clinical trials is Firmonertinib Mesilate in?

Firmonertinib Mesilate is being studied in a Phase 3 trial with the identifier NCT06956001. This randomized, active-controlled trial compares Firmonertinib to platinum-based chemotherapy as first-line treatment for advanced NSCLC with EGFR PACC or EGFR L861Q mutations. The trial is recruiting 300 participants in China.

Is Firmonertinib Mesilate the same as Firmonertinib Mesilate Tablets?

Yes, Firmonertinib Mesilate is also known as Firmonertinib Mesilate Tablets. The tablet formulation is the oral dosage form being investigated in clinical trials for the treatment of EGFR-mutant advanced non-small cell lung cancer.