Lazertinib and Chemotherapy Combination in EGFR-mutant NSCLC Patients Without ctDNA Clearance After lead-in Lazertinib Monotherapy
CHAMELEON
A Randomized, Phase 2 Trial of Lazertinib and Chemotherapy Combination in EGFR-mutant NSCLC Patients Without ctDNA Clearance After lead-in Lazertinib Monotherapy (CHAMELEON)
1 other identifier
interventional
129
1 country
1
Brief Summary
Lazertinib is an oral third-generation irreversible tyrosine kinase inhibitor (TKI) that has proved to selectively inhibit EGFR-TKI sensitizing mutations (exon 19 deletion or exon 21 L858R) and be effective in patients with central nervous system (CNS) metastases. However, all patients eventually experience disease progression. For patients with MRD, lazertinib plus cytotoxic anticancer drug can prolong the duration of response or even induce complete cure, indicating this combined treatment strategy is considered the safest and most effective. The objective of this phase 2 prospective two-arm clinical trial is to evaluate the safety and efficacy of lazertinib alone or in combination with cytotoxic chemotherapy in EGFR-mutant (exon 19 deletion or exon 21 L858R) NSCLC patients without ctDNA clearance after lead-in lazertinib. If anticancer drugs are used only for patients with MRD, the risk of resistance development will decrease, improving PFS. Hypothesis: to evaluate the efficacy defined as the PFS rate of lazertinib alone or in combination with a cytotoxic anticancer drug in EGFR-mutant NSCLC patients without ctDNA clearance after lead-in lazertinib monotherapy.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Sep 2023
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 27, 2023
CompletedFirst Posted
Study publicly available on registry
September 1, 2023
CompletedStudy Start
First participant enrolled
September 1, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
September 1, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2025
CompletedSeptember 1, 2023
August 1, 2023
1 year
August 27, 2023
August 31, 2023
Conditions
Outcome Measures
Primary Outcomes (1)
Progression-free survival
PFS is measured from the date of start of study to the date of disease progression or death from any cause.
From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 100 months
Study Arms (3)
A
EXPERIMENTALLazertinib + chemotherapy combination
B
ACTIVE COMPARATORLazertinib monotherapy
C
ACTIVE COMPARATORLazertinib monotherapy
Interventions
Arm A will receive Lazertinib and Pemetrexed, Carboplatin combination. Lazertinib will be given 240 mg once a day daily PO until disease progression or unacceptable toxicity. Pemetrexed(500 mg/m2) will be administered IV infusion on Day 1 of each 21-day cycle until disease progression or unacceptable toxicity. Carboplatin(AUC5) will be administered IV infusions on Day 1 of each 21-day cycle until 4 cycles.
Lazertinib will be given 240 mg once a day daily PO until disease progression or unacceptable toxicity.
Eligibility Criteria
You may qualify if:
- Patients with histologically confirmed recurrent or metastatic non-squamous NSCLC without previous treatment experience
- Presence of the sensitising EGFR-mutation (exon 19 deletion and/or L858R) detected by an accredited laboratory.
- Measurable disease as defined according to RECIST v1.1
- Age ≥19 years
- ECOG performance status 0-2
- Life expectancy ≥12 months
- Adequate haematological function:
- Haemoglobin ≥90 g/L
- Absolute neutrophil count (ANC) ≥ 1.5× 109/L
- Platelet count ≥100× 109/L
- Adequate renal function:
- Serum creatinine ≤1.5x ULN or creatinine clearance ≥50 mL/min (calculated according to Cockcroft-Gault formula, see below).
- Confirmation of creating clearance is only required when serum creatinine is \>1.5x ULN.
- Cockcroft-Gault formula:"mL" /"min" "=" ("140-age" \["years" \])"×actual body weight " \["kg" \]/("72×" 〖"Creatinine" 〗\_"serum" " " ("mg" /"dL" ) ) "(×0.85 if female)"
- Adequate liver function:
- +4 more criteria
You may not qualify if:
- Presence of leptomeningeal metastases
- Symptomatic spinal cord compression
- Currently receiving (or unable to stop use prior to receiving the first dose of lazertinib treatment) medications or herbal supplements known to be potent CYP3A4 inducers that cannot be stopped before enrolment and for the duration of the trial.
- Any evidence of severe or uncontrolled systemic diseases, including uncontrolled hypertension and active bleeding diatheses, which in the investigator's opinion makes it undesirable for the patient to participate in the trial or which would jeopardise compliance with the protocol, or active infection including hepatitis B, hepatitis C and human immunodeficiency virus (HIV). Screening for chronic conditions is not required.
- Patients with a resolved or chronic HBV infection are eligible if they are:
- Negative for HBsAg and positive for hepatitis B core antibody \[anti-HBc IgG\]; or
- Positive for HBsAg, negative for HBeAg but for \>6 months have had transaminases levels below ULN and HBV DNA levels below 2000 IU/mL (i.e., are in an inactive carrier state).
- Refractory nausea and vomiting, chronic gastrointestinal diseases, inability to swallow the formulated product or previous significant bowel resection that would preclude adequate absorption of lazertinib
- Any of the following cardiac criteria:
- QTcF \>470 msec obtained from 3 ECGs, using the screening clinic ECG machine derived QTc value (QTcF: corrected QT interval using Fridericia's formula).
- Any clinically important abnormalities in rhythm, conduction or morphology of resting ECG (e.g., complete left bundle branch block, third degree heart block or second-degree heart block).
- Any factors that increase the risk of QTc prolongation or risk of arrhythmic events such as heart failure, hypokalaemia, congenital long QT syndrome, family history of long QT syndrome or unexplained sudden death under 40 years of age in first degree relatives or any concomitant medication known to prolong the QT interval and cause Torsades de Pointes (TdP).
- Past medical history of ILD, drug induced ILD, interstitial pneumonitis which required steroid treatment, or any evidence of clinically active ILD
- History of hypersensitivity to active or inactive excipients of lazertinib or drugs with a similar chemical structure or class to lazertinib.
- Patients who should not participate in the trial at the investigator's discretion as they are unlikely to comply with trial procedures, restrictions, and requirements for pregnant or lactation women.
- +1 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Yonsei University Health System, Severance Hospital
Seoul, South Korea
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Sun Min Lim
Yonsei University Health System, Severance Hospital
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 27, 2023
First Posted
September 1, 2023
Study Start
September 1, 2023
Primary Completion
September 1, 2024
Study Completion
December 1, 2025
Last Updated
September 1, 2023
Record last verified: 2023-08
Data Sharing
- IPD Sharing
- Will not share