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N. Martinez-Banaclocha



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    MO25 - NSCLC - Combined Modality Therapy II (ID 112)

    • Event: WCLC 2013
    • Type: Mini Oral Abstract Session
    • Track: Mesothelioma
    • Presentations: 1
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      MO25.01 - Interim analysis of the Spanish Lung Cancer Group (SLCG) randomized phase II trial of thoracic radiotherapy (RT) concurrent with cisplatin (P) plus oral vinorelbine (OV) or etoposide (E) for unresectable locally advanced (LA) stage III non-small cell lung cancer (NSCLC). (GECP10/02). (ID 2658)

      10:30 - 10:35  |  Author(s): N. Martinez-Banaclocha

      • Abstract
      • Presentation
      • Slides

      Background
      Chemoradiation is the standard of care for the treatment of unresectable LA-NSCLC. Cisplatin plus either etoposide or vinorelbine are two of the chemotherapy (CT) regimens widely used for the disease concurrently with radiotherapy. Oral vinorelbine is a formulation which has achieved comparable results to the IV vinorelbine. The purpose of the study is to evaluate the efficacy and safety of cisplatin when combined with etoposide or oral vinorelbine with radical radiation for the management of stage III NSCLC.

      Methods
      Patients (pts) between 18 and 75 years, with histologically proven untreated and unresectable LA stage IIIA/IIIB NSCLC, adequate bone marrow, hepatic and renal function, ECOG PS 0-1, were randomized to: Arm OV-P: OV 60 mg/m[2] D1, D8 cycle 1 and 80 mg/m[2] cycle 2 (if no grade 3-4 toxicity) plus P 80 mg/m[2] D1 every 3 weeks for 2 cycles as induction; patients without progression received OV 40 mg/m[2] D1, D8, and P 80 mg/m[2] D1 every 3 weeks for 2 more cycles (4 cycles in total). Arm E-P: E 50 mg/m[2] intravenously D1 to D5 plus P 50 mg/m[2] D1, D8 every 4 weeks for 2 cycles. Both regimens administered with concurrent RT 66 Gy in 6.5 weeks. The primary endpoint was progression free survival using RECIST 1.1, and secondary endpoints were overall response rate, overall survival, and safety profile. To guarantee an overall type-1 α error (one side) no greater than 0.05 and a type II (β) error 0.1 for the primary endpoint of PFS, a sample size of 134 pts allocated in a 1:1 ratio is planned.

      Results
      Since August 2011 77 pts have been recruited. 46 pts have been included in the interim analysis, 23 pts have been randomly allocated to each treatment arm. Patient’s characteristics were: Male 91.3%; median age 64 (range 44-75); PS1 56.5%; smokers 46.8%; adenocarcinoma 40.4% / squamous 55.3%; stage IIIA 46.8% / IIIB 53.2%. Median of months between initial diagnosis and study start was 1 (range 0.3-15.7). Safety: 118 cycles (cy) were analysed, 79 in arm OV-P and 39 in arm E-P. Hematological toxicities arms OV-P/E-P (% cy): grade (g) 3/4 neutropenia 8.9%/13.1%; g3 thrombocytopenia 0%/5.3%; g3 anemia 0%/2.6%; febrile neutropenia 3 cases on OV-P arm (all during induction CT on cy 1) and 1 case on E-P arm (during concurrent chemoradiation). Non-hematological toxicities arms OV-P/E-P (% cy): g3 esophagitis/mucositis 1.3%/15.5%; g3 infection without neutropenia 1.3%/5.1%. No treatment-related deaths were reported. There was no remarkable difference in other toxicities between both arms. 39 pts completed the treatment as per protocol, 19 in arm OV-P and 20 in arm E-P. Overall response rates were 73.7% and 50% for the OV-P and the E-P arm, respectively.

      Conclusion
      This interim analysis shows that OV-P and E-P when administered concurrently with RT have a manageable safety profile with efficacy. Safety data is consistent with other studies reported for both chemoradiation regimens. Based on these positive results for safety, accrual is ongoing. Clinical trial information EudraCT 2010-022927-31.

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    P1.06 - Poster Session 1 - Prognostic and Predictive Biomarkers (ID 161)

    • Event: WCLC 2013
    • Type: Poster Session
    • Track: Biology
    • Presentations: 1
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      P1.06-058 - The PHALCIS Trial (PHarmacogenomic ALimta CISplatin): A clinical trial in progress by The Spanish Lung Cancer Group (ID 3425)

      09:30 - 09:30  |  Author(s): N. Martinez-Banaclocha

      • Abstract

      Background
      The inherent molecular heterogeneity prevents the efforts to improve outcomes for patients with non-small cell lung cancer (NSCLC). Platinum doublets are the standard option for the treatment of advanced NSCLC, but none of the platinum-based combinations used offer a significant advantage over the others. Pemetrexed is an antifolate antimetabolite that inhibits several key folate-dependent enzymes, mainly thymidylate synthase (TS). A phase III trial conducted in the first-line setting of advanced NSCLC demonstrated that survival was statistically superior for cisplatin plus pemetrexed in patients with adenocarcinoma (12.6 versus 10.9 months; HR 0.84, P = 0.03), and large-cell carcinoma (10.4 versus 6.7 months; HR 0.67; P = 0.0 3 compared with cisplatin plus gemcitabine (1). Preclinical data have indicated that overexpression of TS correlates with reduced sensitivity to pemetrexed (2). Baseline expression of the TS gene is superior in squamous cell carcinoma compared with adenocarcinoma (P < 0.0001) (3). BRCA1 is a component of multiple DNA repair pathways and functions as a molecular determinant of response to a range of cytotoxic chemotherapeutics agents. The analysis of BRCA expression levels in patients who had received neoadjuvant gemcitabine/cisplatin chemotherapy found that patients with low levels of BRCA1 had longer survival (P = 0.01) compared to those with high expression levels (4). RAP80 is an interacting protein that form complexes with BRCA1 and could modulate the effect of BRCA1. In patients with non-squamous lung carcinoma, survival was influenced by RAP80 expression (5). Taking into account this background, the Spanish Lung Cancer Group has started a phase IIA study of pemetrexed plus cisplatin as first line treatment for advanced/metastatic non-squamous lung carcinoma. The availability of tissue samples for analysis of expression of BRCA1, RAP80 and thymidylate synthase is mandatory. The primary objective is response rate adjusted for different expression levels of BRCA1, RAP80 and TS. Secondary objectives are OS, TTP and toxicity profile of the combination and its relationship with the biomarkers. The expected total number of patients accrued will be 90. Forty-nine patients have been included up to now. References Scagliotti GV, Parikh P, Pawel J, et al. Phase III study comparing cisplatin plus gemcitabine with cisplatin plus pemetrexed in chemotherapy-naïve patients with advanced-stage non–small-cell lung cancer. J Clin Oncol 2008. Sigmond J, Backus HH, Wouters D, et al. Induction of resistance to the multitarged antifolate pemetrexed in WiDr human colon cancer cells is associated with thymidylate synthase overexpression. Biochem Pharmacol 2003. Ceppi P, Volante M, Saviozzi S, et al. Squamous cell carcinoma of the lung compared with other histotypes shows higher messenger RNA and protein levels for thymidylate synthase. Cancer 2006. Taron M, Rosell R, Felip E, et al. BRCA1 mRNA expression levels as an indicator of chemoresistance in lung cancer. Hum Mol Genet 2004. Rosell R, Perez-Roca L, Sanchez JJ, et al. Customized treatment in non-small cell lung cancer based on EGFR mutations and BRCA1 expression. PLoS ONE 2009.

      Methods
      Not applicable

      Results
      Not applicable

      Conclusion
      Not applicable

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    P3.06 - Poster Session 3 - Prognostic and Predictive Biomarkers (ID 178)

    • Event: WCLC 2013
    • Type: Poster Session
    • Track: Biology
    • Presentations: 1
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      P3.06-035 - Study of the correlations between SNPs in angiogenic genes and treatment response/ outcome in patients with advanced NSCLC (non-squamous histology) treated in first line with carboplatin, paclitaxel and bevacizumab (CPB). The ANGIOMET study. (ID 2664)

      09:30 - 09:30  |  Author(s): N. Martinez-Banaclocha

      • Abstract

      Background
      It has been demonstrated that the addition of bevacizumab to paclitaxel plus carboplatin (CPB) in the treatment of advanced NSCLC improves survival. Even though, there is a high variability in drug efficacy between patients, leading to different response rates. ANGIOMET is an exploratory study promoted by the SLCG in advanced NSCLC, non-squamous histologies (NS-NSCLC) treated in first line with a combination scheme based in CPB, designed to investigate the relationship between angiogenic mediators and the outcome and response to treatment. The primary end-point was progression-free survival (PFS), and the secondary end-points are the follows: OS, response-rates and toxicity profiles.

      Methods
      In this multicentric study, patients with stage IIIB/IV NS-NSCLC (ECOG status 0–2) were included and treated in first line with CPB. Peripheral blood samples were collected before treatment administration and DNA was purified from the leukocyte fraction. Ten SNPs of VEGF-pathway genes were genotyped in 186 samples by RT-PCR in duplicate. SNPs were related to PFS and OS (Kaplan-Meir method, log-rank test) and to response rate.

      Results
      10 SNPs were determined in 186 DNA samples. In this preliminary analysis there were data from 108 patients valid for PFS and OS analysis. Baseline characteristics of the patients were: median age, 63 years [37-80]; 74.5% male; 94.1% ECOG PS 0-1; 14% never-smokers, 100% caucasian; 89.7% adenocarcinomas, 2.8% large cell carcinomas; median number of CPB cycles was 4. There was no response assessment in 27 patients (25%), 30.6% PR, 31.5% SD and 13.0% PD. The SNP rs833061 (CC) in VEGFA correlated with lower response rates to CPB than the other genotypes (p=0.07). SNPs in KRAS and VEGFR2 were associated with PFS and/or OS in our cohort. The KRAS SNP rs10842513 (TT+CT) was associated with shorter PFS compared with the CC genotype (median: 5.39 vs 6.81 months; p=0.04, respectively). The VEGFR2 SNP rs2071559 (AA) was significantly associated with longer PFS and OS (Table 1). No significant differences in PFS or OS were observed according to other SNPs analyzed. Table 1: PFS and OS for VEGFR2 SNPrs2071559.

      PFS
      % Median (months) 95%CI p
      VEGFR2 (rs2071559)
      AA 25.6 9,408 5,084 - 13,732 0.01
      GG+AG 74.0 5,724 4,902 - 6,546
      OS
      % Median (months) 95%CI p
      VEGFR2 (rs2071559)
      AA 25.6 NR ---- 0.001
      GG+AG 74.0 12,270 8,760 – 15.780

      Conclusion
      These preliminary data indicate that genetic variation in VEGFR2, SNP rs2071559 variant AA, is associated with prognosis in advanced NS-NSCLC patients treated with CPB and may have predictive implications as biomarkers in patients treated with chemotherapy with bevacizumab. On behalf of the Spanish Lung Cancer Group (SLCG)