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L. Lacroix
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MINI 07 - ChemoRT and Translational Science (ID 110)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Treatment of Locoregional Disease – NSCLC
- Presentations: 1
- Moderators:D. Raben, B. Kavanagh
- Coordinates: 9/07/2015, 16:45 - 18:15, 201+203
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MINI07.08 - Mutation Profile Prognostic Value in Stage III Non Small Cell Lung Cancer (NSCLC) Patients Treated with Chemo-Radiotherapy (CRT) (ID 2262)
17:25 - 17:30 | Author(s): L. Lacroix
- Abstract
- Presentation
Background:
Molecular profiling is a standard procedure in advanced non squamous NSCLC. Gene alteration in EGFR, BRAF or ALK gene can lead to prescription of targeted therapies and prolongs survival. The influence of molecular abnormalities on the survival of stage III NSCLC patients definitely treated by CRT is unknown.
Methods:
We reviewed all consecutive patients that received CRT or RT with a curative intent for stage III NSCLC in a single institution. Paraffin embedded tissue block were collected. DNA was extracted for gene mutation analysis by next generation sequencing and ALK, ROS1 and RET rearrangements were detected by FISH analysis. Kaplan-Meier methods, log-rank test, and Cox proportional hazards models were used for survival analysis, adjusting for performance status (0, ≥1), stage (IIIA, IIIB) and thoracic surgery (yes, no). Median follow-up was estimated by the Schemper method.
Results:
Between January2002 and June 2013, clinical data from 190 patients were collected. Median dose of RT was 66 Gy (46-70). Platinum-based chemotherapy was administrated concomitantly in 108 patients, as induction/consolidation treatment in 170 patients, and 15 patients did not receive any chemotherapy. Seventy-eight patients were evaluable for mutation profile, 20 (26%) were female, 47 (60%) were current smoker, 40 (51%) had adenocarcinoma and there were 47/31 stage IIIA/IIIB. Mutations were positive as follow: EGFR 12% (9/78), KRAS 15% (12/78), BRAF 5% (3/66), PI3KCA 2% (1/58), HER2 0% (0/65), NRAS 3% (1/32), CTNNB1 3% (1/32). FISH was positive for ALK in 5% (3/56) of the NSCLC. In 32 NSCLC for which the test was performed, there was no alteration in ROS1, RET, HRAS and AKT1. Median Follow-up was 3.1 years (minimum 0.9 year). EGFR mutated or ALK+ (EGFR/ALK) group (n=11) and other mutation group (n=17) had a poorer progression free survival (median 0.8[95%CI: 0.6 ; 0.9] year and 0.5 [0.4 ; 0.8] year ; multivariate hazard ratio (HR)= 1.8 [0.8 ; 3.8] and 2.8 [1.5 ; 5.1] respectively, p=0.004) compared to the wild group (n=50) (median 1 year [0.9;1.3]). There was no significant difference (p=0.23, multivariate Cox) in overall survival: median 2.4 years [1.3 ; NR] for EGFR/ALK group, 1.1 [0.6 ; 2.5] for other mutation group and 1.9 [1.5 ; 2.5] for wild type. In multivariate analysis, only the dose of radiotherapy was significantly associated with overall survival (HR=0.5 [0.3 ; 1.0], p=0.04 in contrast with performance status or stage.
Conclusion:
This study suggests that selected gene alterations could be associated with a poorer survival in stage III NSCLC patients treated by combined modality treatment or radiotherapy alone. Their prognostic and/or predictive value should be further evaluated in a larger population.
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ORAL 06 - Next Generation Sequencing and Testing Implications (ID 90)
- Event: WCLC 2015
- Type: Oral Session
- Track: Biology, Pathology, and Molecular Testing
- Presentations: 1
- Moderators:G. De Lima Lopes, V. Miller
- Coordinates: 9/07/2015, 10:45 - 12:15, Mile High Ballroom 1a-1f
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ORAL06.05 - Molecular Tumor Board (MTB) in Non-Small Cell Lung Cancers (NSCLC) to Optimize Targeted Therapies: 4 Years' Experience at Gustave Roussy (ID 2563)
11:48 - 11:59 | Author(s): L. Lacroix
- Abstract
- Presentation
Background:
Molecular biology has changed the treatment of advanced NSCLC, leading to many small subgroups of patients (pts) eligible for targeted therapies, many of them being not approved. Since 2010 we created a monthly MTB dedicated to NSCLC pts with potential driving molecular abnormalitie(s). MTB includes expert physicians from the lung tumor board and phase I unit, radiation therapists, researchers, geneticists, pathologists and biologists. A medical report summarizes the findings and treatment recommendations for each pts. We report 4 years of activity of MTB at Gustave-Roussy.
Methods:
All consecutive files discussed in MTB for a NSCLC were reviewed. MTB included pts with at least one molecular alteration based on a 75 gene panel (NGS analysis and FISH for ALK, HER2, MET, FGFR1, ROS1 and RET). Tumor and pts characteristics were collected as well as treatments. Pts outcome was calculated from the MTB date. Kaplan-Meier methods, and Cox proportional hazards models were used for survival analysis, adjusting for sex, histology, smoking status, metastasis at diagnosis, number of line(s) before MTB.
Results:
502 files were discussed between 02/2010 and 09/2014. Median age was 60 yrs (25–88 yrs), 53% were male, 86% Caucasian, 26% never-smokers, and 93% had PS ≤1. Initial clinical stage was III-IV in 417 pts (84%) and 79%/10%/11% were adenocarcinomas/squamous cell carcinomas/others NSCLC. Median number of treatment-lines before MTB was 1 (0-10), 86% were previously treated by a platinum-based chemotherapy regimen, 17% in a therapeutic trial, and median time from diagnosis to MTB was 5 months. Biopsy for Molecular Analysis (MoA) mostly came from CT guided biopsies (62%), surgery (21%) or endoscopy (16%). Biopsy was repeated in 19% of pts to get enough material for MoA. The MoA results were ALK rearrangement in 11%, exon 18/19/20/21 EGFR mutation (mut) in 2/14/4/7% respectively, KRAS mut in 32%, PI3KCA mut in 3%, BRAF mut in 5%, HER2 mut (Exon 20) in 2%, HER2 amplification in 2%, FGFR1 amplification in 3%, MET amplification in 3% and other rare mutations in 27%. MTB recommended a targeted therapy in 344 pts (68%) either within clinical trials (57%), EMA approved therapy (23%), an off label drug (9%), or an expanded access program (11%). 162pts (47%) actually received the recommended therapy, 141 (41%) did not and 41 (12%) might receive it at the time of progression. Median follow-up was 24 months (1-24; follow-up censored after 24 months). Median OS was 13.1 months [95%CI: 8.8; 18.2] for non-oriented pts, and 14.3 months [11.5; 16.7] for oriented pts (p=0.39). We observed a significant difference between EGFR/ALK/ROS1 mutated/rearranged pts (median 23.8 months) vs. pts with KRAS (8.6 months) or others mutations (11.1 months) or non-oriented pts (13.1 m; p=0.0008, HR=0.56, 1.15 and 0.97 respectively compared to non-oriented).
Conclusion:
MTB is feasible in daily practice with treatment recommendations in a majority of NSCLC pts (68%), enrichment in clinical trials or expanded access programs, and limitation of off-label drugs use. Benefit on survival for all oriented pts has to be clarified based on the type of molecular abnormality. Update results will be presented at the meeting.
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ORAL 36 - Translational Science/Radiation (ID 151)
- Event: WCLC 2015
- Type: Oral Session
- Track: Treatment of Locoregional Disease – NSCLC
- Presentations: 1
- Moderators:E. Vokes, B. Kavanagh
- Coordinates: 9/09/2015, 16:45 - 18:15, Mile High Ballroom 2c-3c
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ORAL36.02 - Efficacy of Chemo-Radiotherapy (CRT) in Stage III Non-Small Cell Lung Cancer (NSCLC) and PD-L1 Expression (ID 2432)
16:56 - 17:07 | Author(s): L. Lacroix
- Abstract
- Presentation
Background:
Inhibition of the PD1/PD-L1 axis has been successfully developed in advanced NSCLC, and its role in locally advanced NSCLC is under investigation. The prognostic and predictive values of PD-L1 expression is still debated in advanced NSCLC and unknown in stage III NSCLC patients definitely treated by CRT
Methods:
We reviewed all consecutive patients that received CRT or RT with a curative intentfor stage III NSCLC in a single institution. Paraffin embedded tissue block were collected, immunohistochemistry was performed on a Ventana Benchmarck Ultra platform using the E1L3N clone (Cell Signaling Technologies). All tumors were centrally reviewed and tumor cells were scored accordingly (Herbst et al., Nature 2014).Kaplan-Meier methods, log-rank test, and Cox proportional hazards models were used for survival analysis, adjusting for performance status (0, ≥1), stage (IIIA, IIIB) and thoracic surgery (yes, no). Median follow-up was estimated by the Schemper method
Results:
Between January 2002 and June 2013, clinical data from 190 patients were collected. Median dose of RT was 66 Gy (46-70). Chemotherapy, mostly based on doublets with platin salt was administrated concomitantly in 108 patients, as induction/consolidation treatment in 170 patients, and 15 patients did not receive any chemotherapy. Fifty NSCLC were evaluable for PD-L1 expression, 22 (44%) being positive. Fourteen (28%) were female, 24 (48%) were current-smoker, 17 (34%) had adenocarcinoma and there were 23/27 stage IIIA/IIIB. Evaluable and unevaluable populations for PD-L1 were not different. There were no clinical or pathological factors related to PD-L1 positivity. Median follow-up was 7.6 years (minimum: 0.7 year). Median OS was 1.1year(95% confidence interval (CI) 0.6-1.5) in PD-L1 positive (pos) and 2.0 years (95% CI 1.5-3.8) in PD-L1 negative (neg) (p=0.01), HR=2.3 (95% CI 1.2-4.5, p=0.01). Median PFS was 0.7 year (95% CI 0.6-0.8) in PD-L1pos and 1.0 year (95% CI 0.8-1.5) in PD-L1neg (p=0.04), HR=2.1 (95% CI1.1-4.0, p=0.03). There was no difference in terms of acute toxicity according to PD-L1 status (positive or negative):25 had oesophagitis (grade≥2) and 16 had pneumonitis (p=0.57 and p=0.23 respectively).
Conclusion:
PD-L1 positivity was associated to a poorer survival in stage III NSCLC patients treated by definitive chemo-radiotherapy. Its prognostic and/or predictive value should be further evaluated in this population.
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P3.04 - Poster Session/ Biology, Pathology, and Molecular Testing (ID 235)
- Event: WCLC 2015
- Type: Poster
- Track: Biology, Pathology, and Molecular Testing
- Presentations: 1
- Moderators:
- Coordinates: 9/09/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)
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P3.04-053 - SPECTAlung: Screening Patients with Thoracic Tumors for Efficient Clinical Trial Access (ID 1386)
09:30 - 09:30 | Author(s): L. Lacroix
- Abstract
Background:
The identification of molecular alteration and its targeting has completely changed the treatment and prognosis of lung cancer. However, designing and implementing clinical trials in small subsets of patients with a particular molecular alteration is challenging because of lack of uniform screening program. Across Europe, screening for molecular alterations is center or country dependent and, generally limited to a small subset of genes. SPECTAlung is the first European standardized, quality-assured molecular screening program of the European Organization for the Research and Treatment of Cancer (EORTC) in collaboration with the European Thoracic Oncology Platform (ETOP) to facilitate clinical trial access for patients with thoracic tumors. It is expected to test 500 to 1000 patients each year with the overall goal of offering patients clinical trials with targeted agents.
Methods:
Patients sign the informed consent for their tumor tissue to be collected, centralized and processed according to defined international quality control standards at Gustave Roussy Biobank (Villejuif, France). Next Generation Sequencing (NGS) is performed at Sanger Institute (Cambridge, UK) where a panel of about 360 genes is analyzed for mutation, rearrangements and gene copy number. Eligible patients will be those having a pathological diagnosis of any thoracic tumor (lung cancer, malignant pleural mesothelioma and thymic malignancies) at any stage of disease, availability of tumor tissue, age at least 18 years, PS 0-2, life expectancy > 3 months, no active malignancy in the 5 years before study entry and absence of any exclusion criteria that may prevent inclusion into clinical trials. A molecular report will be released to the investigator highlighting identified molecular alterations and also the trials for which the patients might be eligible. The study has been submitted to ethical committees of 15 selected highly specialized and qualified thoracic centres in 12 countries in Europe. EORTC and ETOP will promote the implementation of clinical trials in molecularly selected groups of patients at the SPECTAlung centers. SPECTAlung offers innovative and attractive models of collaboration with commercial and research organizations, by improving patient access to novel therapeutic clinical trial and support the development of personalized medicine. Clinical trial registry number NCT02214134.
Results:
Not applicable
Conclusion:
Not applicable
