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NCT Number: NCT07348965

Pulsatile High-dose Furmonertinib in EGFR-mutant NSCLC With Leptomeningeal Metastasis

The goal of this clinical trial is to clarify the efficacy and safety of the high-dose alternate-day furmonertinib in NSCLC with leptomeningeal metastasis. It will also explore the mechanism by which the high-dose alternate-day administration regimen enhances efficacy from a pharmacokinetic perspective, and investigate the impact of co-occurring mutations on the efficacy and prognosis of furmonertinib in the treatment of EGFR-mutant NSCLC with leptomeningeal metastasis. The main questions it aims to answer are:

Does the high-dose alternate-day administration regimen have definite efficacy? Does the high-dose alternate-day administration regimen have favorable safety? Does the high-dose alternate-day administration regimen improve efficacy by increasing the cerebrospinal fluid (CSF) concentration and CSF penetration rate of the drug? Which co-occurring mutations may affect the efficacy and prognosis of patients with EGFR-mutant NSCLC and leptomeningeal metastasis? Participants will enter Cohort A (320mg qod po) or Cohort B (160mg qd po) to receive furmonertinib based on their own willingness and the clinician's decision, until disease, progression or uncontrollable adverse reactions occur. All patients in Cohort A will undergo efficacy and safety evaluation, with some also participating in pharmacokinetic study; patients in Cohort B will only undergo pharmacokinetic study.

Efficacy and safety evaluation will be conducted through imaging examinations, neurological function assessment scales, quality of life self-assessment scales, and adverse event records. Pharmacokinetic study will be carried out by detecting the plasma concentrations and CSF concentrations of furmonertinib and its active metabolites, and calculating the CSF penetration rate for evaluation.

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Key information

Conditions

NSCLC (Advanced Non-small Cell Lung Cancer) Bronchial Neoplasms Carcinoma, Bronchogenic Carcinoma, Non-Small-Cell Lung Central Nervous System Neoplasms EGFR Activating Mutation Furmonertinib Leptomeningeal Metastasis Lung Diseases Lung Neoplasms Meningeal Carcinomatosis Meningeal Neoplasms Neoplasms Neoplasms by Site Nervous System Diseases Nervous System Neoplasms Respiratory Tract Diseases Respiratory Tract Neoplasms Thoracic Neoplasms

Age range

18 year–75 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Guangdong Provincial Hospital of Chinese Medicine

Guangzhou, Guangdong, 510120, China

Location status: Recruiting

Location contact

Yanjuan Zhu, M.D.

CONTACT

[email protected]

02081887233

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patients with non-small cell lung cancer (NSCLC) confirmed by histopathological or cytopathological examination
  • Patients with EGFR exon 19 deletion or exon 21 L858R mutation
  • Patients with leptomeningeal metastasis (LMD) confirmed by positive cerebrospinal fluid (CSF) cytology (within 28 days prior to the first dose administration) and with at least 1 LMD lesion that can be repeatedly evaluated by magnetic resonance imaging (MRI)
  • Patients with disease progression after first-line tyrosine kinase inhibitor (TKI) treatment
  • Aged ≥18 years and ≤85 years, with no gender restrictions.
  • Sufficient organ function, defined as: absolute neutrophil count ≥ 1.5×10⁹/L, platelet count ≥ 75×10⁹/L, hemoglobin ≥ 90g/L total bilirubin ≤ 1.5×upper limit of normal (ULN) alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5×ULN (for patients with liver metastasis, total bilirubin can be relaxed to ≤ 3×ULN, and ALT/AST can be relaxed to ≤ 5×ULN) serum creatinine ≤ 1.5×ULN or creatinine clearance ≥ 50 mL/min (calculated by the Cockcroft-Gault formula)
  • For patients enrolled in the pharmacokinetic study: no prior treatment with furmonertinib (either in combination or as monotherapy)
  • Patients who have signed the informed consent form, are willing to receive treatment under this protocol, can adhere to medication administration, and have good compliance.

Exclusion criteria

  • Unable to complete the baseline assessment form
  • Complicated with severe or uncontrolled systemic diseases, including active infection, electrolyte disturbance, bleeding tendency, etc.
  • Pregnant or lactating women, or those with planned pregnancy during the study or within 6 months after the study ends
  • Presence of central nervous system complications requiring emergency neurosurgical intervention
  • Suffering from other malignant tumors or having a history of other malignant tumors
  • Complicated with severe brain diseases or mental illnesses that affect the patient's ability to report symptoms by themselves
  • Individuals without legal capacity, or those for whom medical or ethical reasons affect the continuation of the study
  • Other circumstances deemed unsuitable for participation in this study by the researcher.
  • Patients with a severe allergic diathesis, especially those who have experienced severe drug allergies or other serious adverse reactions during previous treatment with tyrosine kinase inhibitors (TKIs).

Treatment and study plan

Furmonertinib 320mg qod po

Drug

furmonertinib 320mg qod po until disease, progression or uncontrollable adverse reactions occur.

Furmonertinib 160mg qd po

Drug

furmonertinib 160mg qd po until disease, progression or uncontrollable adverse reactions occur.

Primary outcomes

  1. LM-DCR

    Time frame: From date of first administration of the study drug until the date of first documented leptomeningeal disease progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Leptomeningeal metastasis-disease control rate, calculated as the proportion of patients with leptomeningeal metastasis who achieve remission or stable disease, which will be determined based on the modified imaging assessment method formulated by the RANO-LM working group with imaging assessments.

Secondary outcomes

  1. LM-ORR

    Time frame: From date of first administration of the study drug until the date of first documented leptomeningeal disease progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Leptomeningeal metastasis objective response rate, calculated as the proportion of patients with leptomeningeal metastasis who achieve remission, which will be determined based on the modified imaging assessment method formulated by the RANO-LM working group with imaging assessments.

  2. neurological function

    Time frame: From date of first administration of the study drug until the date of first documented leptomeningeal disease progression or date of death from any cause, whichever came first, assessed up to 3 years.

    measured by NANO-LM standardized neurological examination

  3. iDoR

    Time frame: From date of first administration of the study drug until the date of first documented leptomeningeal disease progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Intracranial duration of response means the time from the first achievement of intracranial disease remission to the first disease progression or death from any cause. Investigators will assess lesions other than leptomeningeal metastases according to the modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1), while investigators and neuroradiological Independent Central Review (ICR) will evaluate the response of leptomeningeal metastases based on the modified neuroradiological criteria formulated by the RANO-LM working group.

  4. iPFS

    Time frame: From date of enrollment until the date of first documented leptomeningeal disease progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Intracranial progression-free survival means the time from the date of enrollment to the first occurrence of intracranial disease progression or death from any cause. Investigators will assess lesions other than leptomeningeal metastases according to the modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1), while investigators and neuroradiological Independent Central Review (ICR) will evaluate the response of leptomeningeal metastases based on the modified neuroradiological criteria formulated by the RANO-LM working group.

  5. PFS

    Time frame: From date of enrollment until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Progression-free survival means the time from the date of enrollment to the first occurrence of disease progression or death from any cause. Investigators will assess lesions other than leptomeningeal metastases according to the modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1), while investigators and neuroradiological Independent Central Review (ICR) will evaluate the response of leptomeningeal metastases based on the modified neuroradiological criteria formulated by the RANO-LM working group.

  6. OS

    Time frame: From date of enrollment until the date of death from any cause, assessed up to 5 years.

    Overall survival refers to the time from the date of enrollment to the date of death from any cause.

  7. Quality of life evaluation

    Time frame: From date of enrollment until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Patient self-assessments of quality of life will be conducted using the Chinese versions of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30). The EORTC QLQ-C30 is a 30-item questionnaire comprising 5 functional scales, 3 symptom scales, 1 global health/QoL scale and 6 single items. The score of this questionnaire ranges between 1 and 4 in functional scales, symptom scales, and single items. The score ranges between 1 and 7 in global health/QoL scale. The higher score indicates the worse quality of life.

  8. Quality of life evaluation

    Time frame: From date of enrollment until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Patient self-assessments of quality of life will be also conducted using the Chinese versions of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Brain Cancer Module (EORTC QLQ-BN20). The QLQ-BN20 is a 20-item questionnaire that assesses future uncertainty, visual disorder, motor dysfunction, and communication deficit, as well as seven single items (headaches, seizures, drowsiness, hair loss, itchy skin, weakness of legs, bladder control). The score of this questionnaire ranges between 1 and 4. The higher score indicates the worse quality of life.

  9. AEs

    Time frame: From date of enrollment until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 3 years.

    Adverse events will be recorded according to Common Terminology Criteria for Adverse Events version 6.0 (CTCAE v6.0)

  10. CSF Penetration Rate

    Time frame: Patients will undergo twice of specimen collection: the first before treatment (-14 to 0 days) and the second 4 weeks after treatment (4weeks ±7 days).

    Cerebrospinal fluid penetration rate refers to the ratio of the drug's concentration in cerebrospinal fluid to its concentration in plasma.

  11. Gene Mutation

    Time frame: at baseline and date of progression (assessed up to 3 years)

    Testing the gene mutation of plasma, CSF and the tumor tissue by NGS

Study contacts

Contact information is provided by the study sponsor or research team.

Yanjuan Zhu, M.D.

CONTACT

[email protected]

86-20-81887233 ext. 34830

Sponsors and collaborators

Lead sponsor

Guangzhou University of Traditional Chinese Medicine

Other

Registry information

Important dates

Study start
2026
Primary completion
2028
Study completion
2028
First posted
Jan 16, 2026
Registry last updated
Apr 2, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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