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N. Baize



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    MO07 - NSCLC - Targeted Therapies II (ID 114)

    • Event: WCLC 2013
    • Type: Mini Oral Abstract Session
    • Track: Medical Oncology
    • Presentations: 1
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      MO07.09 - Feasibility and clinical impact of re-biopsy in advanced non-small cell lung cancer: a prospective multicentric study in real world setting (GFPC study 12-01) (ID 1045)

      16:15 - 17:45  |  Author(s): N. Baize

      • Abstract
      • Presentation
      • Slides

      Background
      In case of progression under initial treatment, repeat biopsy is a new option procedure in advanced non-small cell lung cancer (NSCLC). Its justification is based on the assessment of biological markers (comparison to the initial status, emergence of resistance to chemotherapy or new biomarkers). The aim of this pragmatic prospective multicenter study was to assess feasibility and clinical utility of re-biopsy in real world setting in advanced NSCLC.

      Methods
      Patient’s main inclusion criteria was advanced NSCLC with an indication of repeat biopsy by the referent clinician. The primary outcome was the percentage of successful procedures; secondary outcomes were localization of the new biopsy, type of procedure, new biological status (comparison to initial status, new biomarkers, resistance biomarkers) and tolerance of the procedure.

      Results
      From May 2012 to May 2013, 18 centers included 102 patients. The characteristics of the 67 first patients were: male: 40%; age: 64.8 ± 10.9 years; PS 0/1: 87%; adenocarcinoma: 85%; EGFR mutated: 46.2%; no biological available assessment: 16.4%; controlled disease as best response to first line: 70%. Repeat biopsy was possible in 80.6%. The main failure reasons were: inaccessible lesion: 4.5%, medical contraindications: 14.9%. Main procedures were: bronchial endoscopy: 48.1%, trans thoracic needle biopsy: 24.1%. The procedure permits to find, in EGFR wild type population, 3 patients with a driver oncogene (1 HER2, 1 Ros1, 1 EML4 ALK); in EGFR mutated patients, 2 T790M mutations and to obtain in 3 patients with no biological data’s at the diagnosis, a biological profile. Complications were very low: 2 cases of moderate bleeding and 1 case of pneumothorax.

      Conclusion
      Repeat biopsy is a feasible procedure with acceptable adverse events. Recommendations should be realized on the indications of re-biopsy, the timing and the recommended site (primary versus metastasis, progressive target versus no progressive). Analysis of the complete population (n=102) will be presented at the meeting. Supported by an academic grant from Boehringer Ingelheim Company and Hoffmann-La Roche Company.

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    O15 - NSCLC - Chemotherapy II (ID 109)

    • Event: WCLC 2013
    • Type: Oral Abstract Session
    • Track: Medical Oncology
    • Presentations: 2
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      O15.02 - The Spanish Lung Cancer Group (SLCG) BRCA1-RAP80 Expression Customization (BREC) randomized phase III trial of customized chemotherapy in advanced non-small-cell lung cancer (NSCLC) patients with wild-type epidermal growth factor receptor (EGFR) (NCT00617656/GECP-BREC) (ID 1157)

      10:30 - 12:00  |  Author(s): N. Baize

      • Abstract
      • Presentation
      • Slides

      Background
      RAP80, a component of the BRCA1 complex, influenced outcome both in p with low BRCA1 expression treated with cisplatin (cis)/gemcitabine (gem) and in p with intermediate/high BRCA1 levels treated with cis/docetaxel (doc) or with doc alone in the SLCG phase II customized chemotherapy trial (NCT00883480). Based on these findings, the SLCG and the French Lung Cancer Group performed a prospective, randomized phase III trial in metastatic NSCLC patients to compare non-customized cis/doc with customized therapy customized according to BRCA1 and RAP80 mRNA expression levels.

      Methods
      From 2008 to 2013, patients with wild-type EGFR were randomized 1:1 to the control or experimental arm. Planned accrual was 391 patients. Treatment in the control arm was cis/doc, while patients in the experimental arm received treatment according to their BRCA1 and RAP80 levels: 1) those with low RAP80, regardless of BRCA1 levels, received cis/gem; 2) those with intermediate/high RAP80 and low/intermediate BRCA1 received cis/doc; and 3) those with intermediate/high RAP80 and high BRCA1 received doc alone. The primary endpoint was progression-free survival (PFS).

      Results
      At 15 October 2012, 279 patients had been included and the planned interim analysis was performed. PFS was 5.49 months (m) in the control and 4.38 m in the experimental arm (P=0.07). Overall survival (OS) was 12.66 m in the control and 8.52 m in the experimental arm (P=0.006). Response rate (RR) was 37.3% in the control and 27% in the experimental arm (P=0.07). In the multivariate analysis including PS, treatment arm, BRCA1, RAP80, histology, smoking status and metastatic site, only extrathoracic metastases were associated with an increased risk of progression (HR, 1.78; P=0.02). In a post hoc analysis restricted to patients with ECOG PS 0, PFS was 3.91 m in the control and 7.47 m in the experimental arm (P=0.01) for those with low RAP80 levels (experimental group 1). PFS for patients in experimental groups 1, 2 and 3 was 7.47, 7.01 and 3.22 m, respectively (P=0.02). OS for patients in experimental groups 1, 2 and 3 was 28.88, 15.86 and 11.81 m, respectively (P=0.04).

      Conclusion
      Based on the negative results for PFS at the interim analysis, accrual was closed on this study. The negative results may be due to the poor predictive capacity of RAP80 and/or to the inclusion of doc alone as a treatment in the experimental arm. In addition, doc/cis may not have been the ideal combination for the control arm. Customized chemotherapy could be further encouraged in oncogene-driven pan-negative patients with PS 0.

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      O15.03 - Phase III, randomized, multicenter study comparing in elderly patients (≥70 years) with stage IV non small-cell lung cancer (NSCLC) a standard strategy of treatment allocation (carboplatin based bi-therapy or monotherapy with docetaxel) based on performance status (PS) and age with an experimental strategy allocating the same chemotherapies or best supportive care (BSC) according to a comprehensive geriatric assessment (CGA) - Study ESOGIA-GFPC-GECP 08-02. (ID 694)

      10:30 - 12:00  |  Author(s): N. Baize

      • Abstract
      • Presentation
      • Slides

      Background
      Incidence of advanced NSCLC in the elderly is increasing. The use of a CGA is recommended to detect the patient’s vulnerability but its integration in treatment decision making has never been prospectively evaluated. The main objective of this study was to show that, compared to a standard strategy based on PS and age, the use of a CGA can improve the management of NSCLC in first line.

      Methods
      Randomized, multicentric, prospective phase III study in patients ≥70 y, PS 0-2 with stage IV NSCLC. We compared in arm A a standard algorithm of chemotherapy allocation based on PS and age: carboplatin based doublet in PS≤1 and age ≤75y, mono-therapy in PS =2 or age >75y with in arm B an experimental strategy of treatment allocation based on CGA: carboplatin based doublet for fit patients, mono-therapy for vulnerable patients and BSC for frail patients. Carboplatin (AUC5,d1), was associated to pemetrexed (500 mg/m2,d1) in non-squamous tumors and to gemcitabine (1000 mg/m2, d1-8) in squamous tumors, monotherapy was docetaxel 38 mg/m2 (d1-8). Four cycles of chemotherapy were to be given every three weeks. The main endpoint was time to failure treatment (TTF=duration between the date of randomization and the date the patient was withdrawn from treatment for any reason (progression, toxicity, death), secondary endpoints were Overall Response Rate (ORR), overall survival (OS), toxicity and quality of life (QoL), survival adjusted on QoL .

      Results
      493 patients were randomized from 01/2010 to 01/2013 by 45 centers. Patients characteristics were: male: 74%, median age: 77 (70-91) years, non-squamous histology: 71.8%, PS 0-1: 81.4%, ADL<6:13.9%, IADL<4:27.5%, Charlson’s index ≥2: 23%, score GDS 5≥3:2.5%. The 2 arms were well-balanced for patients characteristics except for ADL<6 (17.4% in arm A vs 10.3% in arm B). Respectively in arms A and B, 34.4% and 47% patients received a carboplatin based doublet, 65.6% and 31.5% received docetaxel and in arm B 21.5% received BSC. There was no significant difference in terms of TTF, respectively for arm A and arm B: median TTF was 99 days (d), 95%CI:[89; 126] vs. 98 d, 95%CI:[81;135], p=0.7149 and in terms of mOS: 196 d in arm A, 95%CI [171;231] vs. 185 d in arm B ,95%CI [148;235], p=0.7784. All grades toxicities were significantly less frequent in arm B than in arm A (93% vs.86.2%, p=0.016), but there was no difference in terms of grade 3-4 toxicities. All the secondary endpoints data will be updated at time of the meeting.

      Conclusion
      this large phase III study failed to show a superiority of a CGA based strategy of treatment allocation in terms of TTF. In experimental arm, 21.5% of frail patients according to Balducci’s criteria were enrolled and received an exclusive BSC management. Carboplatin-based doublets with pemetrexed and gemcitabine according to histology are feasible with a good profile of tolerance in selected elderly patients. This study will help to precise the most relevant geriatric tools and their cut-off in order to improve the management of the elderly with advanced NSCLC.

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    O18 - Cancer Control and Epidemiology II (ID 133)

    • Event: WCLC 2013
    • Type: Oral Abstract Session
    • Track: Prevention & Epidemiology
    • Presentations: 1
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      O18.04 - Impact of Passive Smoking on molecular pattern in Never Smokers with Non-Small Cell Lung Cancer: Findings from the BioCAST / IFCT-1002 Study (ID 3305)

      10:30 - 12:00  |  Author(s): N. Baize

      • Abstract
      • Presentation
      • Slides

      Background
      EGFR and HER2 mutations are usually associated with never-smokers while KRAS and BRAF mutations are thought to be link with smoking behavior in Non-Small Cell Lung Cancer (NSCLC). Passive smoking exposure is a well-known risk factor for lung cancer. Only EGFR and KRAS mutations were investigated in association with passive smoking and showed conflicting results. We aimed to investigate mutation rate of EGFR, HER2, KRAS, BRAF and ALK in a cohort of never smokers regarding their passive smoke exposure.

      Methods
      The BioCAST / IFCT-1002 study is a prospective cohort of NSCLC patients diagnosed in French never-smokers patients (less than 100 cigarettes in lifetime) between November 2011 and January 2013, Passive smoking exposure was evaluated through standardized questionnaire. We obtained biomarkers mutation results through routine testing. We used Fisher, Chi-square, median test and Mann-Whitney U test for comparisons as appropriate. We used logistic regression to calculate adjusted odds ratio for risk of each mutations.

      Results
      Out of the 384 patients included in the BioCAST database, 334 (87.0%) had available data on passive smoking exposure. Among them, 219 patients (65.6%) were ever exposed to passive smoking in their lifetime. 198 (59.3%) reported a domestic exposure (122 during childhood at least) and 60 (18.0%) a workplace exposure. Result of at least one biomarker mutation was available in 313 patients (93.7%). including 128 EGFR mutations in 297 patients, 8/174 HER2 mutations, 18/256 KRAS mutations, 10/196 BRAF mutations, and 20/171 ALK gene rearrangements. We found no difference in mutation rate according to passive smoke exposure (cf. Table 1). There was no difference when comparing cumulative year of exposure, smoker-year or passive-pack year (as continuous variable) to the mutation rate, for any biomarker. When considered as categorical variable – after division in quartiles – we found also no difference. Results were similar when focusing on domestic (childhood versus adulthood included) and workplace exposure only. Finally, we found no significant increased risk for mutation for any biomarker in logistic regression adjusted for most of other lung cancer risk factors.

      EGFR Mt (n=297) HER2 Mt (n=171) KRAS Mt (n=256) BRAF Mt (n=196) ALK Fusion (n=171)
      % % % % %
      Overall exposure Never 46.5 3.5 6.7 5.9 13.0
      Ever 41.3 5.1 7.2 4.7 11.1
      Domestic exposure Never 45.8 2.9 7.7 6.4 11.1
      Ever 41.3 5.7 6.6 4.2 12.0
      Exposure at workplace Never 43.3 5.5 7.0 5.4 12.2
      Ever 42.3 0 7.0 3.6 8.3
      Total 43.1 4.6 7.0 5.1 11.7
      Exposure in childhood Ever 40.5 3.0 6.5 2.7 14.7
      Only in adulthood 42.6 10.3 6.8 6.7 7.5

      Conclusion
      Although we report the largest and more comprehensive study focusing on this topic, we found no significant difference in the biomarker mutation profile of NSCLC occurring in French never-smokers regarding their exposure to passive smoking as compared with the pattern of mutations described never-smoker patients with any passive smoking.

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    P2.10 - Poster Session 2 - Chemotherapy (ID 207)

    • Event: WCLC 2013
    • Type: Poster Session
    • Track: Medical Oncology
    • Presentations: 1
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      P2.10-013 - Randomized non comparative multicenter phase II study of sequential erlotinib with docetaxel versus docetaxel alone in patients with non small cell lung cancer (NSCLC) after failure of first line chemotherapy (TARSEQ): a GFPC 10.02 study. (ID 972)

      09:30 - 16:30  |  Author(s): N. Baize

      • Abstract

      Background
      Erlotinib and docetaxel are approved in second line treatment of advanced NSCLC. Concomitant administration of a tyrosine kinase inhibitor (TKi) of EGFR with standard chemotherapy in first line did not improve survival compared to chemotherapy alone. Preliminary studies support a possible efficacy of sequential administration of EGFR TKi and chemotherapy. Objective: This open randomized phase II trial (Tarseq) was designed to assess the efficacy and tolerability of second-line sequential erlotinib plus docetaxel in advanced NSCLC.

      Methods
      Patients were randomized (1/1, stratified by center, disease status: recurrent or refractory (no response observed after 4 cycles of first-line chemotherapy))between sequential erlotinib 150 mg/d (day 2-16) + docetaxel (75 mg /m2 d1- 21) (arm A) versus docetaxel (75mg/m2 d1) alone (arm B) until disease progression or unacceptable toxicity. Primary endpoint was the rate of patients with progression-free survival at 15 weeks (PFS15) ; second endpoints included progression-free survival (PFS), overall survival (OS), overall response rate (ORR), and tolerability. Main eligibility criteria were advanced NSCLC, EGFR wild type or unknown, performance status 0 to 2, failure of first line cisplatin based chemotherapy; main exclusion criteria were more than 2 lines of treatment, previous anti-EGFR or docetaxel treatment. Statistical analysis was based on a Simon’s optimal two stage design . The primary endpoint is rejected if the number of efficacy is less 33 over 66 pts (25+ 41) at the end of the two stages.

      Results
      147 patients were randomized by 33 centers: median age: 60 ± 8 years, PS 0/1/2 (44/83/20 pts) ; male: 78%, EGFR status: wild type 66%, unknown: 34%; recurrent patients: 65% (arms A/B :66%/65%), nonsquamous: 86% (arms A/B : 84%/90%), smoking status: smokers 35%, formers 57,5%, never 7,5%. Baseline characteristics were balanced between 2 arms. In ITT, the primary objective was not meet with 18/66 pts without progression at 15 weeks in arm A, 17 /66 pts in arm B. In arm A and B, median PFS was 2,2 (CI95% 1,6-2,8) and 2,5 (CI 95% 1,7-2,8) months and median OS was 6,6 (CI 95% 4,3-10,3) and 8,4 (CI 95% 4,5-11,3) months respectively. Toxicity was acceptable in both arms with 60.2 % and 54% of G3/4 toxicity in arms A and B, respectively.

      Conclusion
      The sequential combination of erlotinib with docetaxel did not demonstrate any benefit in second-line treatment of EGFR wild type or unknown advanced NSCLC, despite acceptable toxicity. The Pharmacological hypothesis of synergism between erlotinib given sequentially and standard chemotherapy is not confirmed in the present study. Clinical trial information: NCT01350817 / Supported by an academic grant from Roche, Chugai, Sanofi Aventis,with the help of clinical research direction ( Limoges University Hospital)