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T. Takahashi
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MA 17 - Locally Advanced NSCLC (ID 671)
- Event: WCLC 2017
- Type: Mini Oral
- Track: Locally Advanced NSCLC
- Presentations: 1
- Moderators:S. Jheon, Georgios Stamatis
- Coordinates: 10/17/2017, 15:45 - 17:30, F203 + F204 (Annex Hall)
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MA 17.06 - Safety Data from Randomized Phase II Study of CDDP+S-1 vs CDDP+PEM Combined with TRT for Locally Advanced Non-Squamous NSCLC (ID 8296)
15:45 - 17:30 | Author(s): T. Takahashi
- Abstract
- Presentation
Background:
Both cisplatin (CDDP)+S-1 and CDDP+pemetrexed (PEM) can be given at full systemic doses with thoracic radiotherapy (TRT) in locally advanced non-small cell lung cancer (NSCLC), and CDDP+PEM is one of the standard chemotherapy regimens in patients with advanced non-squamous (non-sq) NSCLC. This multicenter, randomized, open-label, phase II study (SPECTRA) compared the efficacy and safety of the two above-mentioned promising regimens combined with TRT in patients with unresectable locally advanced non-sq NSCLC.
Method:
Patients were randomly assigned to receive CDDP+S-1 (CDDP 60mg/m2, d1, and S-1 80mg/m2, d1-14, q4w, up to 4 cycles) or CDDP+PEM (CDDP 75mg/m2, d1, and PEM 500mg/m2, d1, q3w, up to 4 cycles) combined with TRT 60Gy in 30 fractions. The primary endpoint was 2-year progression-free survival (PFS) rate. If the 2-year PFS rate is assumed to be 25% in the inferior therapy group and 15% higher in the superior therapy group of this study, the sample size needed for selection of the optimum treatment group at a probability of approximately 95% will be 51 cases/group with the Simon’s selection design. The sample size was set at 100 patients.
Result:
Between Jan 2013 and Oct 2016, 102 patients were enrolled in this study from 9 institutions in Japan. All 102 patients were eligible and assessable, of whom 52 were assigned to CDDP+S-1 and 50 to CDDP+PEM. Baseline characteristics were similar (CDDP+S-1/CDDP+PEM): median age (range) 64.5 (39-73)/63.5 (32-74) years; women, n=17 (33%)/n=17 (34%); stage IIIB, n=21 (40%)/n=20 (40%); ECOG PS of 1, n=14 (27%)/n=14 (28%); never smoker, n=12 (23%)/n=12 (24%); and adenocarcinoma, n=47(90%)/n=45(90%). Completion rate of TRT (60Gy) and chemotherapy (4 cycles) was 92%/98% and 73%/86%, respectively. Response rate was 60%/64%. Grade 3 or higher toxicities included febrile neutropenia (12%/2%), anorexia (8%/16%), diarrhea (8%/0%), esophagitis (6%/8%), pneumonia (4%/4%), neutropenia (38%/52%), anemia (8%/12%), thrombocytopenia (4%/6%), and hyponatremia (12%/12%). Grade 1 radiation pneumonitis was observed in 8 (15%)/2 (4%) patients on the basis of the data collected 30 days or less after the discontinuation of protocol treatment. No treatment-related death was observed. The data on PFS and overall survival are immature.
Conclusion:
Response rate was similar between the two arms. Toxicities were tolerable and manageable in both arms; however febrile neutropenia was more frequently observed in the CDDP+S-1 arm. We will present the updated safety data of this study at the conference. Survival data will be analyzed in late 2018.
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MA 19 - Mesothelioma: Bench to Bedside (ID 680)
- Event: WCLC 2017
- Type: Mini Oral
- Track: Mesothelioma
- Presentations: 1
- Moderators:Dean A Fennell, Hedy Lee Kindler
- Coordinates: 10/18/2017, 11:00 - 12:30, Room 315
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MA 19.01 - A Phase II Study of Nivolumab: A Multicenter, Open-Label, Single Arm Study in Malignant Pleural Mesothelioma (MERIT) (ID 9111)
11:00 - 12:30 | Author(s): T. Takahashi
- Abstract
- Presentation
Background:
Malignant pleural mesothelioma (MPM) is a rare and highly aggressive malignancy with poor prognosis and limited treatment options beyond progression after platinum-based combination with pemetrexed chemotherapy. Nivolumab (anti-PD-1, ONO-4538, BMS-936558), a humanized monoclonal antibody, PD-1 immune-checkpoint inhibitor, has demonstrated antitumor activity and a manageable safety profile in several advanced malignancies. Here, we report the preliminary results of a phase II study to evaluate the efficacy and safety of Nivolumab in previously treated Japanese MPM patients (pts): ONO-4538-41/JapicCTI-No.163247.
Method:
This open-label study enrolled advanced or metastatic MPM pts previously treated with up to two regimens of chemotherapy including platinum-based combination therapy with pemetrexed. Enrollment criteria also included histologically-confirmed, unresectable MPM without prior surgery, measurable disease and ECOG performance status 0-1. There was no restriction of PD-L1 status. Pts received Nivolumab 240 mg flat dose Q2W until progression or unacceptable toxicity. The primary endpoint was the objective response rate (ORR) (modified RECIST by independent review committee, expected response rate was 19.2%); secondary endpoints included disease control rate (DCR), duration of response, progression-free survival (PFS), and overall survival (OS).
Result:
From July to October 2016, 34 pts were enrolled in 15 centers. Males: 85.2%, median age: 68.0 years (range 43-78), PS 1: 61.8%, epithelial/sarcomatoid/biphasic: 79.4%/8.8%/11.8%, 1 prior regimen: 70.6%. Median follow-up was 6.7 months. Independent review committee-assessed 6-month ORR was 29.4% (n=10, 95%CI: 16.8-46.2) and objective responses were observed across tissue types, epithelioid 7/27 (25.9%), sarcomatoid 2/3 (66.7%), biphasic 1/4 (25.0%). 13 pts (38.2%) had stable disease, resulting in a 6-month DCR of 67.6%. Median PFS was 6.1 months (95%IC: 2.9-NR). Median OS has not been reached. 6-month PFS and OS rates are 50.9% (95%CI: 32.7-66.5) and 85.3% (95%IC: 68.2-93.6). 23 (67.6%) pts experienced drug-related adverse event (DRAE), and 7 (20.6%) experienced grade 3/4 DRAEs. 2 pts required dose discontinuation because of pneumonitis (Grade2 and 3).
Conclusion:
Single-agent Nivolumab has significant activity in 2[nd]/3[rd] line MPM pts and met the primary endpoint, suggesting that Nivolumab has a potential to be a new therapeutic option for MPM.
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P2.15 - SCLC/Neuroendocrine Tumors (ID 716)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: SCLC/Neuroendocrine Tumors
- Presentations: 1
- Moderators:
- Coordinates: 10/17/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
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P2.15-008 - Genomic Analysis to Assess a Molecular Signature in Japanese Patients with Pulmonary High Grade Neuroendocrine Carcinoma (ID 8912)
09:30 - 16:00 | Author(s): T. Takahashi
- Abstract
Background:
Pulmonary neuroendocrine carcinoma, including small cell lung cancer (SCLC), large cell neuroendocrine carcinoma (LCNEC), and carcinoid tumor, is a highly malignant cancer with poor prognosis. Because of its rarity, the molecular information available to investigate suitable therapeutic targets is insufficient, and little advancement has been made in the development of molecular-targeted therapies for these patients. This study aimed to determine a molecular signature of pulmonary neuroendocrine carcinoma by genomic analysis to explore therapeutic targets.
Method:
Surgically resected primary tumor specimens obtained between January 2014 and June 2016 from 15 patients with neuroendocrine carcinoma [SCLC, 8; LCNEC, 6; typical carcinoid (TC), 1; categorized based on WHO classification] were subjected to whole-exome sequencing (WES) and gene-expression profiling (GEP). Corresponding peripheral blood samples were collected as controls to identify tumor-specific genetic alterations in WES. Written informed consent was obtained from all patients. WES was performed on an Ion Proton system. An Agilent SurePrint G3 Human Gene Expression 8×60K v2 Microarray was used to detect tumor-specific gene expression. Oncogenic fusions were detected by targeted RNA sequencing. Copy number alterations were detected by integrating copy numbers resulting from WES and GEP. Promising oncogenic genetic alterations were selected using the OncodriveFML and Cancer Genome Interpreter.
Result:
Patient characteristics were: median age, 67 years; men, 67% (10/15); smokers, 93% (14/15); ratio of stage I/II/III/IV (%), 40/47/13/0. The median tumor mutational burden (TMB) in SCLC and LCNEC was 7.6 mutations (mt)/Mb (1.1–11.3) and 8.0 mt/Mb (3.5–12.6), respectively, which were significantly higher than that in lung adenocarcinoma (1.6 mt/Mb; p = 0.0025, p = 0.009), but not in lung squamous cell carcinoma (5.6 mt/Mb). One patient with TC showed low TMB (0.7 mt/Mb) and harbored a truncating mutation in MEN1, indicating a typical molecular signature of carcinoid tumor. The commonly altered genes (≥ 20%) were TP53 [60%, mut, 8; downregulation (down), 1], RB1 (53%, mut, 6; down, 2), CCNE1 [27%, amplification (amp), 4], APC (27%, mut, 3; down, 1), and BCL2 (20%, amp, 3). All genetic alterations detected in TP53, RB1, and APC were putative loss-of-functions. We observed no significant differences in frequency of alterations in the commonly altered genes between SCLC and LCNEC. One patient with LCNEC harbored EGFR-activating mutation, indicating possibility that this tumor was combined LCNEC with adenocarcinoma.
Conclusion:
This study revealed a molecular signature in Japanese patients with pulmonary neuroendocrine carcinoma, which could contribute to the development of novel molecular-targeted therapies.
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P3.01 - Advanced NSCLC (ID 621)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 10/18/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
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P3.01-072 - Dacomitinib Versus Gefitinib for First-Line Treatment of Advanced EGFR+ NSCLC in Japanese Patients (ARCHER 1050) (ID 8476)
09:30 - 16:00 | Author(s): T. Takahashi
- Abstract
Background:
Second-generation EGFR tyrosine-kinase inhibitor dacomitinib has shown encouraging activity as first-line therapy in patients with EGFR-activating mutation-positive (EGFR[+]) advanced NSCLC. We performed the first randomized, open-label phase 3 trial comparing dacomitinib with gefitinib as first-line therapy (NCT01774721) which demonstrated a clinically meaningful and statistically significant benefit of dacomitinib versus gefitinib (PFS per IRC: HR, 0.59 [95%CI, 0.47–0.74]; 1-sided P<0.0001; median PFS, 14.7 vs 9.2 months). We present results from Japanese patients enrolled in this ongoing study.
Method:
Patients with newly diagnosed stage IIIB/IV recurrent NSCLC harboring an EGFR-activating mutation (exon 19 deletion or exon 21 L858R ± exon 20 T790M) were randomized 1:1 to once-daily oral dacomitinib 45 mg or gefitinib 250 mg until disease progression or discontinuation. Patients with CNS mets excluded. Stratification was by race and EGFR mutation subtype. The primary endpoint was progression-free survival (PFS) per blinded independent review committee (IRC).
Result:
Among 452 patients enrolled in ARCHER 1050, 81 were Japanese. Slight imbalances in baseline characteristics were observed (Table). PFS and duration of response improvement in Japanese patients was consistent with global results.
Objective response rates per IRC were similar (dacomitinib, 75.0% [95%CI, 58.8–87.3]; gefitinib, 75.6% [95%CI, 59.7–87.6]; 2-sided P=0.9579). Overall survival data are not mature. All 81 patients received study treatment. No grade 4/5 adverse events (AEs were observed with dacomitinib, while 3 grade 4 AEs and 1 grade 5 AE (disease progression) occurred with gefitinib. The most common grade 3 AEs were dermatitis acneiform (27.5%) and paronychia (22.5%) with dacomitinib and alanine aminotransferase increased (12.2%) and abnormal hepatic function (7.3%) with gefitinib. No new safety signals were identified.Japanese Intention-to-Treat Population Dacomitinib (n = 40) n (%) Gefitinib (n = 41) n (%) Unstratified HR [95% CI] 1-sided p-value Male 15 (37.5) 20 (48.8) Age, years <65 ≥65 19 (47.5) 21 (52.5) 15 (36.6) 26 (63.4) Smoking status Never smoked Ex-smoker Smoker 19 (47.5) 20 (50.0) 1 (2.5) 24 (58.5) 16 (39.0) 1 (2.4) ECOG PS 0 1 28 (70.0) 12 (30.0) 21 (51.2) 20 (48.8) Median, months Median, months PFS per IRC 18.2 (95% CI, 11.0–31.3) 9.3 (95% CI, 7.4–14.7) 0.54 (95% CI, 0.31–0.95) P=0.0141 PFS per INV 18.3 (95% CI, 14.6–22.1) 10.2 (95% CI, 7.3–16.9) 0.61 (95% CI, 0.36–1.04) P=0.0334 DoR per IRC in responders # of responders=30 17.5 (95% CI, 10.2–34.3) # of responders=31 8.3 (95% CI, 5.6–12.9) 0.44 (95% CI, 0.22–0.84) P=0.0056 CI, confidence interval; DoR, duration of response; ECOG PS, Eastern Cooperative Oncology Group performance status; HR, hazard ratio; INV, investigator assessment.
Conclusion:
Dacomitinib significantly improved PFS and duration of response over gefitinib in first-line treatment of Japanese patients with advanced EGFR[+] NSCLC, with a manageable safety profile.
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P3.05 - Early Stage NSCLC (ID 721)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: Early Stage NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 10/18/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
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P3.05-006 - Integrated Genomic Analysis to Assess the Molecular Signature of Japanese Patients with Non-Small Cell Lung Cancer (ID 8950)
09:30 - 16:00 | Author(s): T. Takahashi
- Abstract
Background:
Increasing molecular evidences have led to the development of molecular-targeted cancer therapies for non-small cell lung cancer (NSCLC). Especially, clinical implementation of EGFR- and ALK-targeted therapies has improved clinical outcomes in lung adenocarcinoma (LUAD). However, not all patients with LUAD benefit from these therapies. Moreover, molecular-targeted therapies for lung squamous cell carcinoma (LUSC) have not progressed much, because definitive drug targets have not been identified. To further expand the range of molecular-targeted therapeutics for NSCLC, this study explored novel therapeutic targets by integrated genomic characterization.
Method:
Surgically resected primary tumor specimens obtained between January 2014 and June 2016 from 372 patients with NSCLC (LUAD, 296; LUSC, 76) were subjected to whole-exome sequencing (WES) and gene-expression profiling (GEP). Corresponding peripheral blood samples were collected as controls to identify tumor-specific genetic alterations in WES. Written informed consent was obtained from all patients. WES was performed on an Ion Proton system. An Agilent SurePrint G3 Human Gene Expression 8×60K v2 Microarray was used to detect tumor-specific gene expression. Oncogenic fusions were detected by a targeted RNA-sequencing. Copy number alterations were detected by integrating copy numbers resulting from WES and GEP. Promising oncogenic genetic alterations were selected with OncodriveFML and Cancer Genome Interpreter.
Result:
Patient characteristics (LUAD; LUSC) were as follows: median age (70; 73), men (52%; 87%), smokers (59%; 99%), ratio of stage I/II/III/IV (70/16/13/1%; 57/32/12/0%). The median tumor mutational burden (TMB) in LUAD and LUSC was 1.59 mutations (mt)/Mb (0.06–65.6) and 5.63 mt/Mb (0.32–26.2), respectively. Eleven and two patients showed a hypermutator phenotype (TMB ≥ 20 mt/Mb) in LUAD and LUSC, respectively. In LUAD, hypermutator had significantly more truncating somatic mutations in DNA repair genes than others (73% vs. 5%, p < 0.0001). Oncogenic fusions of EML4-ALK, KIF5B-RET and EZR-ROS1, and FGFR3-TACC3 were observed in 2.7%, 0.3%, and 0.3% of LUAD, and 2.6% of LUSC, respectively. Promising oncogenic mutations were detected in EGFR, KRAS, SMARCA4, RBM10, BAP1 and PBRM1 in LUAD; in KEAP1, PIK3CA, NFE2L2, KMT2D, NF1, ATM, RASA1 and PTEN in LUSC; and in TP53 and CDKN2A in both tumor types. Promising amplified genes include FRS2, MDM2, CDK4, MET, AURKA, CCNE1 and ERBB2 in LUAD; in SOX2 and CDK6 in LUSC; and in EGFR and TERT in both tumor types.
Conclusion:
Theses promising oncogenic genetic alterations of the patients with NSCLC revealed in this study could contribute to the development of novel molecular-targeted therapies.
