This open-label, single-arm, multi-center study will evaluate the progression-free survival in participants with histologically documented, advanced and/or metastatic chemotherapy naive, non-small cell lung cancer (NSCLC) with Epidermal Growth Factor Receptor (EGFR) positive mutations and receiving erlotinib treatment. The anticipated time on study treatment is until disease progression, unacceptable toxicity, withdrawal due to any reason or death.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
23
Erlotinib 150 mg oral doses will be administered daily.
County Hospital Alba; Oncology
Alba Iulia, Romania
Institut of Oncology Al. Trestioreanu Bucharest; Oncology
Bucharest, Romania
Institute Of Oncology Bucharest; Medical Oncology
Bucharest, Romania
Spitalul de Boli Cronice Sf. Luca
Bucharest, Romania
Emergency University Bucharest Hospital; Oncology Department
Bucharest, Romania
Oncology Inst. Cluj-Napoca; Cancer Dept
Cluj-Napoca, Romania
Uni Hospital St. Spiridon; Clinica Oncologie-Radiotherapie
Iași, Romania
S.C. Life Search S.R.L; Medical Oncology Clinic
Timișoara, Romania
ONCOMED - Medical Centre
Timișoara, Romania
Progression-Free Survival (PFS), as Assessed by Investigator Using Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1)
PFS was the time from inclusion in the study to the date of first documented PD or death from any cause, whichever occurred first. Participants without event were censored at the date of the last tumor assessment where non-progression was documented. If a participant received a second anti-cancer therapy without prior documentation of disease progression, the participant was censored at the date of last tumor assessment before starting new chemotherapy. Analysis was performed using Kaplan-Meier method. PD was defined as at least a 20% increase in the sum of LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started or the appearance of 1 or more new lesions.
Time frame: Baseline up to approximately 4 years
Time to Disease Progression, as Assessed by Investigator Using RECIST v1.1
Time to disease progression was defined as the time from baseline evaluation to the first date PD was recorded. Participants without progression were censored at the date of last tumor assessment where non-progression was documented. PD was defined as at least a 20% increase in the sum of LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started or the appearance of 1 or more new lesions.
Time frame: Baseline up to approximately 4 years
Percentage of Participants With Complete Response (CR) And Partial Response (PR) as Assessed by the Investigator Using RECIST v1.1
CR was defined as the disappearance of all target lesions, and PR was defined as at least a 30% decrease in the sum of the longest diameter compared to baseline.
Time frame: Baseline up to approximately 4 years
Percentage of Participants Who Were Alive One Year After Study Treatment Initiation
Time frame: Year 1
Percentage of Participants by Localization of PD, as Assessed by Investigator Using RECIST v1.1
PD was assessed using RECIST v1.1. PD was defined as at least a 20% increase in the sum of LD of target lesions, taking as reference the smallest sum LD recorded since the treatment started or the appearance of 1 or more new lesions. Percentage of participants by localization of PD were reported. Localization included: Left lung inferior lobe; Para-aortic; Left lung upper lobe; Right lung inferior lobe; and Infracranial.
Time frame: Baseline up to approximately 4 years
Number of EGFR Positive Participants Classified Based on Smoking Status
Participants were asked: "Have you smoked at least 100 cigarettes in your entire life?" and "Do you now smoke cigarettes every day, some days, or not at all?" Responses were grouped into three categories: Current Smoker, Former Smoker, and Non-Smoker. Participants who reported smoking at least 100 cigarettes in their lifetime and who, at the time of survey, smoked either every day or some days were defined as 'Current smoker'. Participants who reported smoking at least 100 cigarettes in their lifetime and who, at the time of the survey, did not smoke at all were defined as 'Former smoker'. Participants who reported never having smoked 100 cigarettes were defined as 'Non-smoker'.
Time frame: Day 1
Number of EGFR Positive Participants Classified Based on Type of EGFR Mutations
Participants with NSCLC have tumor associated with EGFR mutations. These mutations occur within EGFR Exons 18-21, which encodes a portion of the EGFR kinase domain.
Time frame: Day 1
Percentage of Similar EGFR Mutations Between Matched Plasma and Tumor Tissue Samples
Time frame: Baseline up to approximately 4 years
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