scholarly journals Afatinib in EGFR TKI-naïve patients (pts) with locally advanced/metastatic NSCLC harbouring EGFR mutations: An interim analysis of a phase IIIB trial

2019 ◽  
Vol 30 ◽  
pp. ii48-ii49 ◽  
Author(s):  
A. Passaro ◽  
K.K. Laktionov ◽  
A. Poltoratskiy ◽  
I. Egorova ◽  
M. Hochmair ◽  
...  
Keyword(s):  
Interim Analysis ◽  
Locally Advanced ◽  
Egfr Mutations ◽  
Metastatic Nsclc ◽  
Phase Iiib ◽  
Egfr Tki

scholarly journals Interim analysis from a phase IIIb, open-label study of afatinib in EGFR TKI-naïve patients (pts) with EGFR mutation-positive (EGFRm+) NSCLC

2019 ◽  
Vol 30 ◽  
pp. ix161-ix162
Author(s):  
F. De Marinis ◽  
K.K. Laktionov ◽  
A. Poltoratskiy ◽  
I. Egorova ◽  
M. Hochmair ◽  
...  
Keyword(s):  
Interim Analysis ◽  
Egfr Mutation ◽  
Open Label ◽  
Open Label Study ◽  
Label Study ◽  
Phase Iiib ◽  
Egfr Tki

Circulating tumor cells and T790M in metastatic non-small cell lung cancer patients with EGFR mutations and acquired resistance to TKI.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e18127-e18127
Author(s):  
Kazutoshi Isobe ◽  
Yoshinobu Hata ◽  
Keita Sato ◽  
Keishi Sugino ◽  
Go Sano ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Acquired Resistance ◽  
Stage Iv ◽  
Distant Metastases ◽  
Egfr Mutations ◽  
Cellsearch System ◽  
Metastatic Nsclc ◽  
Nsclc Patients ◽  
Egfr Tki

e18127 Background: This study assessed correlations between the presence of circulating tumor cells (CTCs), detection of T790M in organs with metastases or circulating-free DNA (cfDNA), and prognosis in metastatic NSCLC patients with acquired resistance to EGFR-TKI. Methods: Metastatic NSCLC patients with activating EGFR mutations, who initially responded but subsequently experienced disease progression while on EGFR-TKI treatment, were defined as having ‘acquired resistance’. Blood samples were collected after development of such acquired resistance and CTCs were counted using the CellSearch system (Veridex). At the same time, T790M in affected organs or cfDNA was analyzed with cycleave real-time PCR assay and fragment analysis. Results: : Six men and 14 women with a mean age of 63.5 yrs (22-84) were enrolled. Histological subtypes were adenocarcinoma in 19 and squamous cell carcinoma in the remaining one. Clinical stages were stage IV in 14 and recurrence with distant metastases after surgical resection in 6. EGFR mutations in tumors at the primary site were G719C in 1, exon 19 deletion in 7, L858R in 10, and G791C + L858R in 2. CTCs were detected in 8 (40%). Numbers of CTCs (per 7.5 ml blood) were 1 in 4 cases, and 3, 4, 8, and 24 in 1 case each. Patients without CTCs survived significantly longer than those with CTCs (≥1 per 7.5 ml). Mean survival time from first detection of CTCs was 3.0 months in patients with CTCs and not reached in patients without CTCs (p < 0.001). T790M was detected in 6 cases (30%). T790M was found in 75% (n = 6/8) of patients without CTCs but in 0% (n = 0/12) of those with CTCs (p < 0.05). Conclusions: The presence of CTCs was correlated with poorly prognosis and lack of T790M in affected organs or cfDNA. The presence of CTCs was informative for distinguishing patients with or without T790M.

Lungful: An observational prospective study to assess the molecular epidemiology of EGFR mutations upon progression on or after first line EGFR-TKI therapy, in real-life clinical settings in Greece.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e21641-e21641
Author(s):  
Giannis Socrates Mountzios ◽  
Dimitrios Mavroudis ◽  
Epaminondas Samantas ◽  
Anna Koumarianou ◽  
Evangelos Georgios Konstantinos Fergadis ◽  
...  
Keyword(s):  
Molecular Epidemiology ◽  
Second Generation ◽  
Egfr Mutation ◽  
Locally Advanced ◽  
Real Life ◽  
Egfr Mutations ◽  
Liquid Biopsies ◽  
T790m Mutation ◽  
Nsclc Patients ◽  
Egfr Tki

e21641 Background: Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) are the gold standard 1st line strategy for non-small-cell lung cancer (NSCLC) patients with activating EGFR mutations (EGFRm), associated with improved survival outcomes and quality of life compared to chemotherapy. Despite the high response rate with first- and second- generation TKIs, most patients develop resistance to treatment and progress. The acquisition of T790M mutation in exon 20 is considered the most common resistance mechanism. This study aims to investigate the molecular epidemiology of EGFR resistance mutations, focusing on T790M in EGFRm NSCLC patients treated with TKIs. Methods: The study included patients with locally advanced/metastatic EGFRm NSCLC who have progressed on or after 1st line treatment with first- or second- generation TKI. Samples either from plasma-based liquid biopsy and/or tissue re-biopsy were analysed using the Cobas EGFR Mutation Test v2. All patients signed informed consent and were enrolled between July 2017 and September 2019. Statistical analyses were performed using SAS software, Version 9.4. Results: Ninety-six eligible patients were enrolled. At the time of progression, T790M mutation was detected in 16.7%of the patients using plasma-based liquid biopsies. Among patients with negative T790M result, in plasma, tissue re-biopsy was performed in 22,7% with evaluable/valid results in 72.2% of them. T790M mutation was identified in 38.5% of re-biopsy samples. According to Cobas EGFR Mutation test results (combined plasma and tissue), T790M mutation was identified in 21.9% of the patients. Of T790M-positive patients 42.9% had previously received first and 57.1% second generation EGFR-TKI. Conclusions: Results from this study in real world clinical setting in Greece, show that EGFR-T790M acquired resistance positivity rate in plasma is lower compared to previous reports. Moreover, these data underline the challenges of implementing precision medicine using tissue re-biopsy in advanced/metastatic NSCLC. Clinical trial information: D133FR00126. [Table: see text]

scholarly journals P2.14-58 A Phase IIIb, Open-Label Study of Afatinib in Caucasian EGFR TKI-Naïve Patients with EGFRm+ NSCLC: An Interim Analysis

2019 ◽  
Vol 14 (10) ◽  
pp. S853-S854
Author(s):  
F. De Marinis ◽  
K.K. Laktionov ◽  
A. Poltoratskiy ◽  
I. Egorova ◽  
M.J. Hochmair ◽  
...  
Keyword(s):  
Interim Analysis ◽  
Open Label ◽  
Open Label Study ◽  
Label Study ◽  
Phase Iiib ◽  
Egfr Tki

Early clearance of plasma EGFR mutations as a predictor of response to osimertinib and comparator EGFR-TKIs in the FLAURA trial.

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 9020-9020 ◽  
Author(s):  
Caicun Zhou ◽  
Fumio Imamura ◽  
Ying Cheng ◽  
Isamu Okamoto ◽  
Byoung Chul Cho ◽  
...  
Keyword(s):  
Egfr Mutation ◽  
Locally Advanced ◽  
Progression Free Survival ◽  
Digital Pcr ◽  
Phase Iii ◽  
Egfr Mutations ◽  
Treatment Naïve ◽  
To Receive ◽  
Egfr Tki ◽  
Egfr Tkis

9020 Background: In the Phase III FLAURA trial (NCT02296125), osimertinib, a third generation EGFR-TKI, showed superior efficacy to comparator EGFR-TKIs as first line treatment for EGFR mutation-positive (EGFRm) advanced NSCLC. In an exploratory analysis, we investigated clinical outcomes associated with detection of plasma EGFRm at 3 or 6 weeks (wks) after start of treatment. Methods: Treatment-naïve patients (pts) with EGFRm (ex19del or L858R) locally advanced or metastatic NSCLC were randomized 1:1 to receive osimertinib 80 mg once daily (QD) or comparator EGFR-TKIs (gefitinib 250 mg QD or erlotinib 150 mg QD). Plasma EGFR mutation analysis was conducted at baseline (BL), wks 3 and 6 by droplet digital PCR. Clearance was defined as undetectable levels of EGFRm in ctDNA at wks 3/6, where they were detectable at BL. Progression-free survival (PFS) was investigated based on early clearance of EGFRm. Results: In total 489/556 (88%) pts (osimertinib: 244/279; comparator: 245/277) had evaluable ctDNA at BL and wks 3/6. Of these, 342/489 (70%; osimertinib: 168/244; comparator: 174/245) had detectable BL EGFRm and were included in this analysis. See table. Conclusions: Clearance of plasma EGFRm after 3/6 wks of EGFR-TKI therapy was associated with a numerical improvement in PFS. The efficacy of osimertinib was superior to comparator EGFR-TKIs regardless of clearance status. Clinical trial information: NCT02296125. [Table: see text]

scholarly journals P3.01-036 A Phase IIIb Open-Label, Single-Arm Study of Afatinib in EGFR TKI-Naïve Patients with EGFRm+ NSCLC: An Interim Analysis

2017 ◽  
Vol 12 (11) ◽  
pp. S2214 ◽  
Author(s):  
Y. Wu ◽  
H. Tu ◽  
J. Feng ◽  
M. Shi ◽  
J. Zhao ◽  
...  
Keyword(s):  
Interim Analysis ◽  
Open Label ◽  
Phase Iiib ◽  
Egfr Tki

scholarly journals A Real-World, Observational, Prospective Study to Assess the Molecular Epidemiology of Epidermal Growth Factor Receptor (EGFR) Mutations upon Progression on or after First-Line Therapy with a First- or Second-Generation EGFR Tyrosine Kinase Inhibitor in EGFR Mutation-Positive Locally Advanced or Metastatic Non-Small Cell Lung Cancer: The ‘LUNGFUL’ Study

Cancers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 3172
Author(s):  
Giannis Mountzios ◽  
Anna Koumarianou ◽  
Alexandros Bokas ◽  
Dimitrios Mavroudis ◽  
Epaminondas Samantas ◽  
...  
Keyword(s):  
Molecular Epidemiology ◽  
Disease Progression ◽  
Real World ◽  
Second Generation ◽  
Egfr Mutation ◽  
Kinase Inhibitor ◽  
Performance Status ◽  
Locally Advanced ◽  
Egfr Mutations ◽  
Egfr Tki

Background: Real-world data on the molecular epidemiology of EGFR resistance mutations at or after progression with first- or second-generation EGFR-TKIs in patients with advanced NSCLC are lacking. Methods: This ongoing observational study was carried out by 23 hospital-based physicians in Greece. The decision to perform cobas®EGFR Mutation Test v2 in tissue and/or plasma at disease progression was made before enrollment. For patients with negative/inconclusive T790M plasma-based results, tissue re-biopsy could be performed. Results: Ninety-six (96) eligible patients were consecutively enrolled (median age: 67.8 years) between July-2017 and September-2019. Of the patients, 98% were tested upon progression using plasma and 2% using tissue/cytology biopsy. The T790M mutation was detected in 16.0% of liquid biopsies. Tissue re-biopsy was performed in 22.8% of patients with a T790M-negative plasma result. In total, the T790M positivity rate was 21.9%, not differing between patients on first- or second-generation EGFR-TKI. Higher (≥2) ECOG performance status and longer (≥10 months) time to disease progression following EGFR-TKI treatment initiation were associated with T790M positivity. Conclusions: Results from plasma/tissue-cytology samples in a real-world setting, yielded a T790M positivity rate lower than previous reports. Fewer than one in four patients with negative plasma-based testing underwent tissue re-biopsy, indicating the challenges in routine care settings.

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