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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05257967
Other study ID # LUEGFRLM
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date July 18, 2022
Est. completion date December 31, 2024

Study information

Verified date July 2023
Source British Columbia Cancer Agency
Contact Cheryl Ho, MD
Phone 604.877.6000
Email cho@bccancer.bc.ca
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Leptomeningeal disease is malignant seeding of the leptomeninges and presents with a variety of symptoms frequently impacting quality of life. With improvement in treatment options, rates of leptomeningeal disease are increasing and currently found in up to 9% of EGFR mutant NSCLC. Systemic therapy may be more effective if it can target the correct molecular aberration. The molecular characterization of central nervous system disease may differ from disease outside of the central nervous system. The aim of this pilot trial is to evaluate for molecular differences between cerebral spinal fluid (CSF) and blood circulating tumor DNA (ctDNA) through the use of ddPCR and BC Cancer NGS panel molecular testing.


Description:

The aim of this pilot trial is to evaluate the concordance/discordance of molecular profiling of CSF and plasma ctDNA after the development of leptomeningeal disease in EGFR mutant NSCLC. Patients with EGFR mutant NSCLC who develop leptomeningeal disease on a first, second or third generation tyrosine kinase inhibitor are potentially eligible for this clinical trial. This is a prospective pilot study designed to accrue 10 patients. Baseline MRI brain and spine must be completed prior to enrolment to insure that a lumbar puncture can be completed safely. All eligible subjects will be consented for ddPCR and Canexia Follow It plasma and CSF based molecular testing. Patients will have baseline information collected and will complete baseline quality of life (QoL) questionnaires. QoL questionnaires will be obtained every 12 weeks +/- 2 weeks and survival will be measured through chart review. There will be no treatment intervention; however we will collect information on treatment received after enrolment in trial. Volume of leptomeningeal disease will be scored by number of gadolinium enhancing sites in 8 predetermined locations.


Recruitment information / eligibility

Status Recruiting
Enrollment 10
Est. completion date December 31, 2024
Est. primary completion date December 31, 2024
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Subject age is greater than or equal to 18 years at the time of signature of informed consent. - Histologically or cytologically confirmed metastatic EGFR mutant NSCLC. - Leptomeningeal disease based on brain MRI or CSF cytology. - ECOG 0-3. - Life expectancy of at least 8 weeks. - Adequate hematologic and end organ function for testing. - Ability to give informed consent for the study procedures defined in this protocol. Exclusion Criteria: - Inability to undergo a lumbar puncture due to thrombocytopenia, bleeding disorders, as well as inability to cooperate or consent to procedure. - Subjects who are otherwise felt by the treating clinician to be unfit to proceed with this protocol. - MRI spine demonstrating spinal leptomeningeal disease preventing a safe lumbar puncture.

Study Design


Intervention

Diagnostic Test:
Lumbar puncture and Phlebotomy
Sampling of cerebral spinal fluid and plasma.

Locations

Country Name City State
Canada BC Cancer Vancouver British Columbia

Sponsors (1)

Lead Sponsor Collaborator
British Columbia Cancer Agency

Country where clinical trial is conducted

Canada, 

References & Publications (2)

Nevel KS, DiStefano N, Lin X, Skakodub A, Ogilvie SQ, Reiner AS, Pentsova E, Boire A. A retrospective, quantitative assessment of disease burden in patients with leptomeningeal metastases from non-small-cell lung cancer. Neuro Oncol. 2020 May 15;22(5):675 — View Citation

White MD, Klein RH, Shaw B, Kim A, Subramanian M, Mora JL, Giobbie-Hurder A, Nagabhushan D, Jain A, Singh M, Kuter BM, Nayyar N, Bertalan MS, Stocking JH, Markson SC, Lastrapes M, Alvarez-Breckenridge C, Cahill DP, Gydush G, Rhoades J, Rotem D, Adalsteinsson VA, Mahar M, Kaplan A, Oh K, Sullivan RJ, Gerstner E, Carter SL, Brastianos PK. Detection of Leptomeningeal Disease Using Cell-Free DNA From Cerebrospinal Fluid. JAMA Netw Open. 2021 Aug 2;4(8):e2120040. doi: 10.1001/jamanetworkopen.2021.20040. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Concordance of molecular profiling of CSF and plasma in EGFR mutation positive NSCLC patients with leptomeningeal disease To determine the concordance rate of molecular alterations detected in the CSF and plasma of EGFR mutation positive NSCLC patients with leptomeningeal disease 36 months
Secondary Concordance of treatment recommendations based on ctDNA and CSF To determine the concordance and discordance between physician treatment recommendations based on ctDNA versus CSF molecular profiling. 36 months
Secondary Molecular profiling comparison To assess concordance/discordance rates between ddPCR and Canexia Follow It completed on CSF and plasma based testing. 36 months
Secondary Molecular profiling descriptive comparison of patients treated with first/second generation versus 3rd generation EGFR TKIs To identify molecular aberrations in the ctDNA and CSF of patients who progress on first/second EGFR TKIs and third generation EGFR TKIs to perform a descriptive comparison of shared and unique mutations identified based on prior exposure to first/second versus third generation EGFR TKI 36 months
Secondary Correlation between MRI and CSF To correlate burden of leptomeningeal disease found on MRI and CSF positivity for tumor DNA. 36 months
Secondary Overall survival To determine overall survival from time of developing leptomeningeal disease. 36 months
Secondary Quality of life with leptomeningeal disease To assess the quality of life using the validated instrument, EuroQol 5 Dimension (EQ5D) (Scale of 0-100 where 0 is worst health and 100 is best health) 36 months
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