Osimertinib With Bevacizumab for Leptomeningeal Metastasis From EGFR-mutation Non-Small Cell Lung Cancer

Last updated: June 9, 2020
Sponsor: Second Affiliated Hospital of Nanchang University
Overall Status: Active - Recruiting

Phase

2

Condition

Non-small Cell Lung Cancer

Neoplasm Metastasis

Treatment

N/A

Clinical Study ID

NCT04425681
20161BBG70210
  • Ages 18-80
  • All Genders

Study Summary

Leptomeningeal metastasis (LM) is a fatal complication of advanced non-small cell lung cancer (NSCLC) associated with poor prognosis and rapid deterioration of performance status. The incidence of LM is increasing, reaching 3.8% in molecularly unselected NSCLC patients, being more frequent in adenocarcinoma subtype and up to 9% in epidermal growth factor receptor mutation (EGFRm) lung cancer patients, one-third of patients have concomitant brain metastasis . This increased incidence may in part be conducive to the increased survival of patients with EGFRm advanced NSCLC since the introduction of EGFR-tyrosine kinase inhibitions (TKIs).Currently, no standard therapeutic regimen for LM has been established because of its rarity and heterogeneity[11], and no approved therapies exists to specifically target LM in patients with EGFRm NSCLC. TKIs therapy is the first-line treatment of patients with EGFRm of NSCLC. The leptomeningeal space is a sanctuary site for tumour cells and therapeutic agents due to the presence of an active blood-brain barrier (BBB), so CSF concentration is an important factor affecting treatment of LM by TKIs. Standard-dose first- and second-generation EGFR-TKIs have good systemic efficacy but sub-optimal CNS penetration, as evidenced by preclinical studies of brain distribution and clinical reports of CSF penetration[15, 16]. Osimertinib is a third-generation EGFR-TKI, irreversible, oral EGFR-TKI that potently and selectively inhibits both EGFR-TKI sensitizing and EGFR T790M resistance mutations, which has demonstrated efficacy in NSCLC CNS metastasis[17-22]. Preclinical, I/II clinical studies and AURA program (AURA extension, AURA2, AURA17 and AURA3) have shown that Osimertinib has higher brain permeability than the first- and second-generation.

Bevacizumab is a recombinant humanized monoclonal antibody against vascular endothelial growth factor (VEGF), animal studies and autopsy specimens show that VEGF plays an important role in LM. VEGF and EGFR share many overlapping and parallel downstream pathways. The biological rationale shows that inhibiting of EGFR and VEGR signaling pathways could improve the efficacy of antitumor and remove the resistance of EGFR inhibition. Besides, preclinical researches have shown the similar results. Based on these, numbers of clinical trials have confirmed that VEGF inhibitors in combination with EGFR-TKI significantly prolong patients' survival.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • Age in 18-80 years

  • Pathologically proven NSCLC

  • EGFR mutation , the EGFR status was identified from primary lung tumors using theamplification refractory mutation system (ARMS) or next-generation sequencing (NGS)analysis.

  • LM diagnosis was based on the detection of malignant cells in the CSF, the focal ordiffuse enhancement of leptomeninges, and nerve roots or the ependymal surface ongadolinium-enhanced MRI .

  • No severe abnormal liver and kidney function;

  • No other severe chronic diseases;

  • Signed informed consent form

Exclusion

Exclusion Criteria:

  • Patients with the clinical manifestation of nervous system failure including severeencephalopathy, grade III-IV white matter lesions confirmed by imaging examination,moderate or severe coma, and glasgow coma score less than 9 points;

  • Allergic to osimertinib or bevacizumab

  • Any of the following: Pregnant women ;Nursing women ;Men or women of childbearingpotential who are unwilling to employ adequate contraception

  • History of myocardial infarction or other evidence of arterial thrombotic disease (angina), symptomatic congestive heart failure (New York Heart Association ≥ grade 2),unstable angina pectoris, or cardiac arrhythmia; Note: allowed only if patient has noevidence of active disease for at least 6 months prior to randomization;

  • History of cerebral vascular accident (CVA) or transient ischemic attack (TIA)≤ 6months prior to randomization

  • History of bleeding diathesis or coagulopathy

  • History of hemoptysis da≥ grade 2 (defined as bright red blood of at least 2.5 mL) ≤3months prior to randomization

  • Leukocytes below 210^9/L, neutrophils below 110^9/L; platelets below 50*10^9/L;

  • Had major surgery within 60 days;

  • History of arteriovenous thrombosis

  • Gastrointestinal perforator in the past 6 months

  • Inadequately controlled hypertension (systolic blood pressure of > 150 mmHg ordiastolic pressure > 100 mmHg on anti-hypertensive medications); Note: history ofhypertensive crisis or hypertensive encephalopathy not allowed

  • Grade 4 proteinuria

Study Design

Total Participants: 20
Study Start date:
October 01, 2017
Estimated Completion Date:
June 01, 2021

Study Description

This is a phase II pilot study to evaluate the efficacy and safety of osimertinib with bevacizumab for LM from EGFRm NSCLC patients. ALL patients were treated with Osimertinib 80mg oral daily and bevacizumab 7.5mg/kg intravenous every 3 weeks. Study therapy continued until disease progression, unacceptable adverse event, or withdrawal of consent.

Connect with a study center

  • The Second Afiliated Hospital of Nanchang University

    Nanchang, Jiangxi 330006
    China

    Active - Recruiting

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