Abstract 5068
Background
Pembrolizumab significantly improves progression-free survival (PFS) (median 10.3 months) and overall survival (OS) (median 30.0 months) in selected patients with previously untreated advanced non–small-cell lung cancer (NSCLC) with a PD-L1 tumor proportion score (TPS) ≥ 50% and without EGFR/ALK aberrations. Data in real life conditions are missing.
Methods
This was a cross-sectional, retrospective study of untreated advanced NSCLC patients with TPS ≥ 50% and without EGFR/ALK aberrations, from 9 French hospitals in Brittany area. The study included 115 patients and analysis focused on 108 patients. At index, the main characteristics of our cohort were: median age [range] 66.7 [37 to 87] years, 71 % male, 23.1 % performans status (P.S) 2, 88.8 % current or former smokers. 87.1 % had Stage IV at diagnosis and 9.2 % had untreated brain metastasis. 23.4% had mutations (KRAS, MET, BRAF and ROS 1). We used Kaplan-Meier analysis for PFS and described tolerability.
Results
With a median follow-up of 7.1 months, median PFS was 10.1 months (95% confidence interval [CI], 8.8 to 11.4), (range, and 0.6 to 18.5 months). The objective response rate was 58,2% (complete response: 2.7 % and partial response: 55.5 %). Disease control rate was 72.1%. The estimated rate of OS at 6 months was 86.6 %. Treatment-related adverse events of grade 3 (AE) occurred in 7.4% of patients. There was no grade 4 or 5 AE and mean time between first administration of pembrolizumab and clinico-biological AE was 13.9 (± 9.7) weeks. Our data are immature to appreciate OS.
Conclusions
In a real life cohort of patients (PS 2, untreated brain metastasis), with advanced NSCLC and PD-L1 expression on at least 50% of tumor cells, pembrolizumab demonstrates similar PFS with KEYNOTE-024 phase III trial.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
Renaud Descourt.
Funding
Association Bretonne de Cancérologie Thoracique (ABCT).
Disclosure
R. Corre: Travel / Accommodation / Expenses, Officer / Board of Directors: bms. G. Robinet: Advisory / Consultancy: MSD; Research grant / Funding (institution), Travel / Accommodation / Expenses: AstraZeneca; Advisory / Consultancy, Research grant / Funding (institution): BMS; Research grant / Funding (institution): Roche. R. Descourt: Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: Roche; Advisory / Consultancy, Research grant / Funding (institution), Travel / Accommodation / Expenses: takeda; Advisory / Consultancy, Travel / Accommodation / Expenses: Lilly; Advisory / Consultancy: Novartis; Advisory / Consultancy: BMS; Travel / Accommodation / Expenses: Pfizer. All other authors have declared no conflicts of interest. Linguistic correction
Resources from the same session
5011 - LCSCAF1 maintains cancer stem-like traits by stabilizing c-Myc protein and promotes metastasis and recurrence in lung cancer
Presenter: Tao Guo
Session: Poster Display session 1
Resources:
Abstract
4955 - XAF1 Enhances Temozolomide Induced Autophagic Cell Death through AMPK signaling pathway
Presenter: Mingoo Lee
Session: Poster Display session 1
Resources:
Abstract
5616 - The effect of cortisol on methylation patterns in breast cancer cell lines
Presenter: Haya Intabli
Session: Poster Display session 1
Resources:
Abstract
4649 - Global and sex-specific epigenome-wide association studies for the identification of the main methylated loci related to smoking in a Mediterranean population
Presenter: Judith Begona Ramirez Sabio
Session: Poster Display session 1
Resources:
Abstract
4984 - Whole transcriptomics analyses of mimicking Circulating Tumor Cells (CTCs) by single-cell RNA sequencing (scRNAseq)
Presenter: Jessica Garcia
Session: Poster Display session 1
Resources:
Abstract
5926 - Comparison of enzymatic- and bisulfite conversion to map the plasma cell-free methylome in cancer
Presenter: Nicole Lambert
Session: Poster Display session 1
Resources:
Abstract
5454 - Detection of low mutations in hepatocellular carcinoma by using circulating tumor DNA
Presenter: Esl Kim
Session: Poster Display session 1
Resources:
Abstract
4428 - Variants in the JAK1 and JAK2 genes in the risk and prognosis of patients with cutaneous melanoma
Presenter: Bruna Carvalho
Session: Poster Display session 1
Resources:
Abstract
4409 - P-Rex1 expression in breast cancer patients.
Presenter: Angela Lara Montero
Session: Poster Display session 1
Resources:
Abstract
4185 - Modulation of Risk of Cutaneous Melanoma Patients by Variants in STAT3 Gene and Functional Analysis
Presenter: Gabriela Gomez
Session: Poster Display session 1
Resources:
Abstract