Hall 406 Proffered Paper session
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Location
Hall 406
Chairs
  • Myung-Ju Ahn
  • Pilar Garrido Lopez
  • Sanjay Popat
Proffered paper session - Thoracic cancers Proffered Paper session

LBA15 - Overall survival with first-line durvalumab plus platinum-etoposide in patients with extensive-stage (ES)-SCLC in CASPIAN: Subgroup findings from Asia

Presentation Number
LBA15
Lecture Time
02:30 PM - 02:42 PM
Speakers
  • Makoto Nishio
Location
Hall 406, Singapore, Singapore, Singapore
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Authors
  • Makoto Nishio
  • Jun Ho Ji
  • Katsuyuki Hotta
  • Chao-Hua Chiu
  • Jong-Seok Lee
  • Koichi Azuma
  • Sang-We Kim
  • Shang-Yin Wu
  • Mikhail Dvorkin
  • Dmytro Trukhin
  • Libor Havel
  • Maximilian J. Hochmair
  • Mustafa Özgüroğlu
  • Jair Bar
  • Yuanbin Chen
  • Jonathan W. Goldman
  • Natalie Byrne
  • Peter J. Laud
  • Norah Shire
  • Luis Paz-Ares

Abstract

Background

CASPIAN is an open-label, phase 3 study of first-line durvalumab (D), ± tremelimumab (T), plus etoposide and either cisplatin or carboplatin (EP) for the treatment of pts with ES-SCLC. In a planned interim analysis of the overall global population, D+EP significantly improved OS vs EP alone (primary endpoint; HR 0.73 [95% CI 0.59–0.91]; p=0.0047). We report interim analysis exploratory results from Asia (prespecified subgroup).

Background

CASPIAN is an open-label, phase III study of first-line durvalumab (D), ± tremelimumab (T), plus etoposide and either cisplatin or carboplatin (EP) for the treatment of pts with ES-SCLC. In a planned interim analysis (IA), D+EP significantly improved OS vs EP alone (primary endpoint; HR 0.73 [95% CI 0.59–0.91]; p = 0.0047). We report prespecified exploratory results at this IA for pts recruited in Asia.

Methods

Treatment-naïve pts with ES-SCLC were randomised (1:1:1) to D 1500 mg + EP q3w; D 1500 mg + T 75 mg + EP q3w; or EP q3w. Pts in the immunotherapy arms received up to 4 cycles of EP followed by maintenance D q4w until progression. Pts in the EP arm received up to 6 cycles of EP and PCI (investigator’s discretion). Investigator’s choice of cisplatin or carboplatin (stratification factor) was permitted. Data cutoff: 11 March 2019.

Results

Of the 537 pts in the D+EP and EP arms, 76 (14.2%) were randomised in Japan, South Korea, Taiwan or China (Asia subgroup). Some differences were observed in baseline characteristics between the Asia subgroup and overall population. Median OS for D+EP vs EP in the Asia subgroup was 14.8 vs 11.9 months (HR 0.87 [95%CI 0.45, 1.64]). More pts in the Asia subgroup vs the overall population received subsequent anticancer therapy (63.2 vs 43.2%; balanced between arms). Incidence of any cause SAEs was higher in the Asia subgroup vs the overall population regardless of treatment; AEs leading to discontinuation was less. In the Asia subgroup, for D+EP vs EP, the incidence of any cause grade 3/4 AEs was 62.9 vs 76.9%; respective incidences of SAEs and AEs leading to discontinuation were: 42.9 vs 48.7% and 5.7 vs 7.7%. The D+T+EP arm continues to final analysis.

Table: LBA15

Durvalumab + EP
EP
Overall (n = 268)Asia subgroup (n = 35)Overall (n = 269)Asia subgroup (n = 41)
Baseline characteristics
 Median age, years (range)62 (28–82)65 (40–82)63 (35–82)67 (46–82)
 Male, %70.985.768.482.9
 Ever/never smoker, %91.8/8.297.1/2.994.4/5.695.1/4.9
 WHO PS 0/1, %36.9/63.131.4/68.633.5/66.519.5/80.5
 Disease stage III/IV, %10.4/89.611.4/88.68.9/91.12.4/97.6
OS
 Median OS, mo (95% CI)13.0 (11.5–14.8)14.8 (10.3–NR)10.3 (9.3–11.2)11.9 (8.0–18.9)
 OS HR* (95% CI)0.73 (0.59–0.91) p = 0.00470.87 (0.45–1.64)--
 18-mo OS rate, % (95% CI)33.9 (26.9–41.0)39.2 (19.9–58.2)24.7 (18.4–31.6)32.1 (14.6–51.1)

Stratified Cox proportional hazards;

Primary endpoint

Conclusions

In the CASPIAN overall population, D+EP improved OS vs EP; results were consistent in this prespecified subgroup of patients recruited in Asia. The safety profile of D+EP in the Asia subgroup was also consistent with the overall population, with no new signals identified.

Clinical trial identification

NCT03043872 (Release date, 6 February 2017) EudraCT number: 2016-001203-23.

Editorial acknowledgement

Rebecca Douglas, PhD of Cirrus Communications (Macclesfield, UK), an Ashfield company, funded by AstraZeneca.

Legal entity responsible for the study

AstraZeneca PLC.

Funding

AstraZeneca.

Disclosure

M. Nishio: Honoraria (self): Ono Pharmaceutical; Honoraria (self): Bristol-Myers Squibb; Honoraria (self): Pfizer; Honoraria (self): Chugai Pharmaceutical; Honoraria (self): Eli Lilly; Honoraria (self): Taiho Pharmaceutical; Honoraria (self): AstraZeneca; Honoraria (self): MSD; Honoraria (self): Novartis; Honoraria (self): Boehringer Ingelheim; Honoraria (self): Sankyo Healthcare; Honoraria (self): Merck Serono; Research grant/Funding (self): Ono Pharmaceutical; Research grant/Funding (self): Bristol-Myers Squibb; Research grant/Funding (self): Pfizer; Research grant/Funding (self): Chugai Pharmaceutical; Research grant/Funding (self): Eli Lilly; Research grant/Funding (self): Taiho Pharmaceutical; Research grant/Funding (self): AstraZeneca; Research grant/Funding (self): MSD; Research grant/Funding (self): Novartis; Research grant/Funding (self): Astellas, All outside the submitted work. K. Hotta: Research grant / Funding (self), Grants and personal fees: AstraZeneca / Lilly / Bristol-Myers Squibb; Travel / Accommodation / Expenses, Personal fees: MSD / Ono / Nipponkayaku / Taiho / Boehringer Ingelheim / Chugai. C-H. Chiu: Honoraria (self): AstraZeneca; Honoraria (self): Boehringer Ingelheim; Honoraria (self): Bristol-Myers Squibb; Honoraria (self): Chugai Pharmaceutical; Honoraria (self): Eli Lilly; Honoraria (self): Merck Sharp & Dohme; Honoraria (self): Novartis; Honoraria (self): Ono Pharmaceutical; Honoraria (self): Pfizer; Honoraria (self): Roche; Honoraria (self): Takeda. K. Azuma: Honoraria (self), Lecture fees: Ono Pharmaceutical Co Ltd / Bristol-Myers Squibb / AstraZeneca KK / Chugai Pharmaceutical. M. Özgüroğlu: Advisory / Consultancy: Janssen / Sanofi / Astellas; Honoraria (self): Novartis / Roche / Janssen / Sanofi / Astellas; Travel / Accommodation / Expenses: Bristol-Myers Squibb / Janssen. J. Bar: Research grant / Funding (institution): MSD / AstraZeneca / Roche / BMS / Takeda / AbbVie / Pfizer; Travel / Accommodation / Expenses, Personal fees: AstraZeneca / MSD / Boehringer Ingelheim / Roche / BMS / Takeda / AbbVie / Pfizer / VBL. Y. Chen: Research grant / Funding (self): AstraZeneca / Ipsen / Roche / Bristol-Myers Squibb; Travel / Accommodation / Expenses, Personal fees: AstraZeneca / Genentech / Bristol-Myers Squibb / Merck / Novartis / Takeda / Eli Lilly / Guardant Health / Pfizer / Array Biopharma. J.W. Goldman: Research grant / Funding (self): AstraZeneca/MedImmune / Eli Lilly / Genentech / Bristol-Myers Squibb / Array BioPharma; Research grant / Funding (self): Celgene / AbbVie; Advisory / Consultancy: AstraZeneca / Genentech; Advisory / Consultancy: Lilly; Speaker Bureau / Expert testimony, Speakers\' Bureau: Merck. N. Byrne: Full / Part-time employment, Contractor: AstraZeneca; Shareholder / Stockholder / Stock options: AstraZeneca. P.J. Laud: Full/Part-time employment: AstraZeneca, Contractor. N. Shire: Full / Part-time employment: AstraZeneca; Shareholder / Stockholder / Stock options: AstraZeneca. L. Paz-Ares: Honoraria (self): Roche/Genentech / Lilly / Pfizer/ Boehringer Ingelheim / BMS / MSD / AstraZeneca / Merck Serono; Honoraria (self): PharmaMar / Novartis / Celgene / Sysmex / Amgen / Incyte; Travel / Accommodation / Expenses: Roche / AstraZeneca / AstraZeneca Spain / MSD / BMS / Lilly / Pfizer; Leadership role, Myself: Genomica; Leadership role, An immediate family member: European Medicines Agency; Spouse / Financial dependant, Other relationship: Novartis / Ipsen / Pfizer / Servier / Sanofi / Roche / Amgen / Merck.

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Proffered paper session - Thoracic cancers Proffered Paper session

474O - Efficacy and safety of first-line durvalumab (D) ± tremelimumab (T) vs chemotherapy (CT) in Asian patients with metastatic NSCLC: Results from MYSTIC

Presentation Number
474O
Lecture Time
02:42 PM - 02:54 PM
Speakers
  • Myung-Ju Ahn
Location
Hall 406, Singapore, Singapore, Singapore
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Authors
  • Byoung Chul Cho
  • Ki Hyeong Lee
  • Myung-Ju Ahn
  • Sarayut Lucien Geater
  • Tran Van Ngoc
  • Chin-Chou Wang
  • Eun Kyung Cho
  • Jong Seok Lee
  • Virote Sriuranpong
  • Quang Bui
  • Stephen Clarke
  • Shoichi Kuyama
  • Kazuhiko Nakagawa
  • Feng Liu
  • Delyth Clemett
  • Urban Scheuring
  • Solange Peters
  • Naiyer Rizvi

Abstract

Background

In MYSTIC, an open-label, phase 3 trial of first-line D (anti-PD-L1) ± T (anti-CTLA-4) vs CT, while not statistically significant, a clinically meaningful improvement in overall survival (OS) was seen with D vs CT in patients with tumour cell PD-L1 expression ≥25% (TC ≥ 25% [primary analysis population]; D vs CT, HR 0.76 [97.54% CI 0.56–1.02]; D+T vs CT, HR 0.85 [98.77% CI 0.61–1.17]). Here we report results in a subpopulation of Asian patients.

Methods

Immunotherapy/CT-naïve patients with metastatic NSCLC were randomized (1:1:1) to D (20 mg/kg q4w); D (20 mg/kg q4w) + T (1 mg/kg q4w ≤4 doses); or CT. In this analysis in a subpopulation of Asian patients, efficacy outcomes were evaluated in patients with PD-L1 TC ≥25%; safety was evaluated in all treated patients (regardless of PD-L1 expression).

Results

Of the 488 patients in the primary analysis population (PD-L1 TC ≥25%), 156 (32%) were Asian (D, 59; D+T, 50; CT, 47). Baseline characteristics in the Asian population were balanced between treatment arms. OS was improved in Asian patients (PD-L1 TC ≥25%) with D vs CT (HR 0.69 [95% CI 0.43–1.09]) and D+T vs CT (HR 0.64 [95% CI 0.40-1.03]); more patients receiving D or D+T remained in response at 6 months vs CT (Table). Grade ≥3 treatment-related adverse events (TRAEs) and any grade TRAEs leading to discontinuation occurred in 19.7% and 9.0% (D); 23.9% and 14.5% (D+T); 23.4% and 7.2% (CT) patients in the Asian subpopulation, respectively.

Durvalumab
Durvalumab + tremelimumab
Chemotherapy
Overall (n = 163)Asian (n = 59)Overall (n = 163)Asian (n = 50)Overall (n = 162)Asian (n = 47)
Median OS, mo16.3 (12.2–20.8)18.8 (9.2–28.4)11.9 (9.0–17.7)17.7 (11.6–27.3)12.9 (10.5–15.0)10.6 (7.0–14.6)
24-mo OS rate, %38.343.835.442.022.722.3
OS HR vs CT (95% CI)0.76 (0.56–1.02)*0.69 (0.43–1.09)0.85 (0.61–1.17)0.64 (0.40–1.03)
ORR, n (%)58 (35.6)19 (32.2)56 (34.4)18 (36)61 (37.7)17 (36.2)
Patients remaining in response (%) at
6 mo66.968.467.652.732.434.3
12 mo61.362.254.926.318.0NR

Overall and Asian populations include patients with PD-L1 TC ≥25%;.

97.54% CI; †98.77% CI; ORR occurred on June 1, 2017; DoR, duration of response; NR, not reached; ORR, objective response rate; OS, overall survival.

Conclusions

Durvalumab resulted in a favourable HR for OS compared to CT in patients with PD-L1 TC≥25% in the Asian subpopulation, which was consistent with the primary analysis population. OS HR for D+T vs CT appeared to be more favourable in the Asian subpopulation compared to the primary analysis population, although results should be interpreted with caution due to small sample sizes. The safety profile of D±T in the subpopulation of Asian patients was manageable and consistent with the primary analysis population.

Clinical trial identification

NCT02453282.

Editorial acknowledgement

Medical writing support, which was in accordance with Good Publication Practice (GPP3) guidelines, was provided by Beena John, PhD of Cirrus Communications (Macclesfield, UK), an Ashfield company, and was funded by AstraZeneca.

Legal entity responsible for the study

AstraZeneca.

Funding

AstraZeneca.

Disclosure

B.C. Cho: Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca; Advisory / Consultancy, Research grant / Funding (institution): Novartis; Research grant / Funding (institution): Bayer; Research grant / Funding (institution): MOGAM Institute; Advisory / Consultancy: Boehringer Ingelheim; Advisory / Consultancy: Roche; Advisory / Consultancy: BMS; Advisory / Consultancy, Research grant / Funding (institution): Ono; Advisory / Consultancy, Research grant / Funding (institution): Yuhan; Advisory / Consultancy, Research grant / Funding (institution): Janssen; Research grant / Funding (institution): Champions Oncology; Research grant / Funding (institution): Dong-A ST; Research grant / Funding (institution): Dizal Pharma; Advisory / Consultancy, Research grant / Funding (institution): MSD; Advisory / Consultancy: Pfizer; Advisory / Consultancy: Eli Lilly; Advisory / Consultancy: Takeda; Shareholder / Stockholder / Stock options: TheraCanVac Inc. K.H. Lee: Honoraria (self), Advisory / Consultancy: AstraZeneca; Honoraria (self), Advisory / Consultancy: MSD; Honoraria (self), Advisory / Consultancy: BMS. S. Lucien Geater: Honoraria (self), Research grant / Funding (institution): AstraZeneca; Honoraria (self), Research grant / Funding (institution): Roche; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Boehringer Ingelheim; Research grant / Funding (institution): Novartis; Research grant / Funding (institution): Samsung. T.V. Ngoc: Research grant / Funding (institution): AstraZeneca; Research grant / Funding (institution): GSK; Research grant / Funding (institution): Novartis. S. Clarke: Advisory / Consultancy, Travel / Accommodation / Expenses: AstraZeneca. S. Kuyama: Speaker Bureau / Expert testimony, Lecture fees: AstraZeneca; Speaker Bureau / Expert testimony, Lecture fees: Pfizer; Speaker Bureau / Expert testimony, Lecture fees: Eli Lilly; Speaker Bureau / Expert testimony, Lecture fees: Boehringer Ingelheim; Speaker Bureau / Expert testimony, Lecture fees: MSD; Speaker Bureau / Expert testimony, Lecture fees: Taiho; Speaker Bureau / Expert testimony, Lecture fees: Chughai. K. Nakagawa: Honoraria (institution), Research grant / Funding (institution): MSD / Takeda / SymBio Pharmaceuticals / Daiichi Sankyo; Honoraria (self), Research grant / Funding (institution): Eli Lilly Japan; Honoraria (self), Research grant / Funding (institution): BMS; Honoraria (self), Research grant / Funding (institution): Taiho /Ono / Chughai; Honoraria (self), Research grant / Funding (institution): AstraZeneca / Astellas Pharma / Novartis / Nippon Boehringer Ingelheim / Pfizer Japan; Research grant / Funding (institution): Merck Serono / ICON Japan /PAREXEL / IQVIA Services Japan / A2 Healthcare / AbbVie; Research grant / Funding (institution): EP-CRSU / Linical / Otsuka Pharmaceuticals / EPS International / Quintiles / CMIC Shift Zero / Eisai / Kissei Pharmaceutical ; Research grant / Funding (institution): Kyowa Hakko Kirin / EPS Corporation / Bayer Yakuhin / inVentiv Health Japan / Gritstone Oncology / GSK / Yakult Honsha / Covance ; Honoraria (self): Kyorin Pharmaceutical / CareNet / Nichi-Iko Pharmaceutical / Hisamitsu Pharmaceutical / Yodosha / Clinical Trial / Reno Medical / Nanzando / Medical Review; Honoraria (self): Medicus Shuppan / Ayumi Pharmaceutical / Thermo Fisher Scientific / Yomiuri Telecasting Corporation / Nikkei Business Publications. F. Liu: Full / Part-time employment, Full-time employee: AstraZeneca. D. Clemett: Full / Part-time employment, Full-time employee: AstraZeneca. U. Scheuring: Full / Part-time employment, Full-time employee: AstraZeneca. S. Peters: Honoraria (self), Advisory / Consultancy: AbbVie; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Amgen; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): AstraZeneca / Pfizer; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Bayer / Seattle Genetics and Takeda; Honoraria (self), Advisory / Consultancy: Biocartis; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Boehringer Ingelheim; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): BMS; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Clovis; Honoraria (self), Advisory / Consultancy: Daiichi Sankyo / Regeneron / Sanofi; Honoraria (self), Advisory / Consultancy: Debiopharm; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony: Eli Lilly; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): F Hoffmann-La Roche; Honoraria (self), Advisory / Consultancy: Foundation Medicine; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Illumina; Honoraria (self), Advisory / Consultancy: Janssen; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Merck Sharp & Dohme; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Merck Serono; Honoraria (self), Advisory / Consultancy: Merrimack; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Novartis; Honoraria (self), Advisory / Consultancy: Pharma Mar. N. Rizvi: Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: Genentech/Roche; Advisory / Consultancy: Novartis; Advisory / Consultancy: Merck Sharp & Dohme; Advisory / Consultancy: BMS; Advisory / Consultancy: Pfizer; Advisory / Consultancy: Lilly; Advisory / Consultancy: AbbVie; Advisory / Consultancy: Regeneron; Advisory / Consultancy: Janssen; Leadership role, Shareholder / Stockholder / Stock options: ARMO BioSciences; Shareholder / Stockholder / Stock options: Gritstone Oncology. All other authors have declared no conflicts of interest.

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Proffered paper session - Thoracic cancers Proffered Paper session

Invited Discussant LBA15 and 474O

Lecture Time
02:54 PM - 03:09 PM
Speakers
  • Sanjay Popat
Location
Hall 406, Singapore, Singapore, Singapore
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Authors
  • Sanjay Popat
Proffered paper session - Thoracic cancers Proffered Paper session

475O - Overall survival (OS) from the AURA3 phase III study: Osimertinib vs platinum-pemetrexed (plt-pem) in patients (pts) with EGFR T790M advanced non-small cell lung cancer (NSCLC) and progression on a prior EGFR-tyrosine kinase inhibitor (TKI)

Presentation Number
475O
Lecture Time
03:09 PM - 03:21 PM
Speakers
  • Yi-Long Wu
Location
Hall 406, Singapore, Singapore, Singapore
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Authors
  • Yi-Long Wu
  • Tony S.K. Mok
  • Ji-Youn Han
  • Myung-Ju Ahn
  • Angelo Delmonte
  • Suresh S. Ramalingam
  • Sang-We Kim
  • Frances A. Shepherd
  • Janessa Laskin
  • Yong He
  • Hiroaki Akamatsu
  • Willemijn S. Theelen
  • Wu-Chou Su
  • Thomas John
  • Martin Sebastian
  • Helen Mann
  • Miguel Miranda
  • Gianluca Laus
  • Yuri Rukazenkov
  • Vassiliki Papadimitrakopoulou

Abstract

Background

In AURA3 (NCT02151981), osimertinib, a 3rd-generation EGFR-TKI, significantly prolonged progressionfree survival (PFS) and improved response rate vs plt-pem in pts with centrally confirmed EGFR T790M advanced NSCLC and progression on a prior EGFR-TKI. Here we report mature OS data.

Methods

Adult pts were randomised 2:1 to receive oral osimertinib (80 mg once daily) or intravenous pem (500 mg per m2 of body surface area) + carboplatin (target area under the curve 5)/cisplatin (75 mg per m2), every 3 weeks, ≤6 cycles. Treatment beyond progression (RECIST 1.1) was allowed if clinical benefit continued. Pts receiving plt-pem could cross over to osimertinib on disease progression. Asymptomatic CNS metastases were allowed. Primary endpoint was investigator-assessed PFS. OS and safety are reported as secondary endpoints. Data cut-off (DCO): 15 March 2019.

Results

In total, 419 pts were randomised (osimertinib, n = 279; plt-pem, n = 140); 99 pts (71%) crossed over to osimertinib from plt-pem. At DCO, 188 pts (67%) in the osimertinib arm vs 93 pts (66%) in the plt-pem arm had died, including 66/99 (67%) crossover pts; median OS 26.8 mo (95% confidence interval [CI] 23.5, 31.5) vs 22.5 mo (95% CI 20.2, 28.8) respectively, hazard ratio (HR) 0.87 (95% CI 0.67, 1.12; p = 0.277); survival rate at 24 mo was 55% vs 43% and at 36 mo was 37% vs 30%. Time to first subsequent treatment showed a large, clinically meaningful numerical advantage towards osimertinib, HR 0.21 (95% CI 0.16, 0.28; p < 0.001); time to second subsequent treatment, HR 0.87 (95% CI 0.69, 1.11; p = 0.263). In both arms, 99% pts had any adverse event (AE). Any AE grade ≥3 causally related to study treatment was 9% vs 34% for osimertinib and plt-pem respectively. Most common AEs were diarrhoea, 44% (grade ≥3, 1%), and nausea, 49% (grade ≥3, 4%), with osimertinib and plt-pem respectively.

Conclusions

A numerical advantage in OS was observed for pts receiving osimertinib vs plt-pem, with the majority of pts in the plt-pem arm having crossed over to osimertinib. The safety profile of osimertinib remains consistent with previous findings.

Clinical trial identification

NCT02151981.

Editorial acknowledgement

Laura Crocker, BMedSci, of iMed Comms, an Ashfield Company, who provided medical writing support funded by AstraZeneca.

Legal entity responsible for the study

AstraZeneca.

Funding

AstraZeneca.

Disclosure

Y-L. Wu: Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Roche; Honoraria (self): Eli Lilly; Honoraria (self): Pfizer; Honoraria (self): MSD; Honoraria (self): Bristol-Myers Squibb; Honoraria (self), Advisory / Consultancy: Boehringer Ingelheim. T.S.K. Mok: Honoraria (self): ACEA Pharma, Alpha Biopharma Co., Ltd., Amgen, Amoy Diagnostics Co., LTD., AstraZeneca (before 1/1/19), Bayer, BI, Blueprint Medicines Corporation, BMS, Celgene, CStone Pharmaceuticals, Eli Lilly, Fishawack Facilitate Ltd, Hengrui Therapeutics Inc., Ignyt; Advisory / Consultancy: ACEA Pharma, Alpha Biopharma Co., Ltd., Amgen, Amoy Diagnostics Co., LTD., AstraZeneca (before 1/1/19), Bayer, BI, Blueprint Medicines Corporation, BMS, Celgene, Cirina, CStone Pharmaceuticals, Eli Lilly, Fishawack Facilitate Ltd, geneDecode Co., Ltd. (un; Leadership role: AstraZeneca PLC, Hutchison Chi-Med; Research grant / Funding (institution): AstraZeneca, BMS, Clovis Oncology, MSD, Novartis, Pfizer, Roche, SFJ, XCovery; Shareholder / Stockholder / Stock options: Shareholder: Hutchison Chi-Med, Sanomics Ltd. Stock option: Clearbridge Biomedics (now Biolidics Ltd.), Loxo-Oncology, OrigiMed Co. Ltd., Virtus Medical Group; Full / Part-time employment: The Chinese University of Hong Kong; Officer / Board of Directors: Remunerated: AstraZeneca PLC, Hutchison Chi-Med Non-remunerated: American Society of Clinical Oncology (ASCO) Asian Thoracic Oncology Research Group (ATORG) Chinese Lung Cancer Research Foundation Limited (CLCRF) Chinese Society of Clinical Oncology (CS. J-Y. Han: Honoraria (self): Roche, AstraZeneca, Bristol-Myers Squibb, MSD, Takeda; Advisory / Consultancy: AstraZeneca, Bristol-Myers Squibb, MSD, Takeda, Pfizer, Novartis, Lilly; Research grant / Funding (self): Roche, Pfizer, Ono Pharmaceutical, Takeda. M-J. Ahn: Advisory / Consultancy, Speaker Bureau / Expert testimony: AstraZeneca, Merck, Sharp & Dohme, Ono Pharmaceutical, Lilly, Roche; Advisory / Consultancy: Alpha Pharmaceutical, Takeda. S.S. Ramalingam: Honoraria (self), Advisory / Consultancy: AstraZeneca, Amgen, Bristol-Myers Squibb, Merck, Roche/Genentech, Loxo, Nektar, Tesaro; Research grant / Funding (institution): AstraZeneca, Amgen, Bristol-Myers Squibb, Merck, Tesaro, Advaxis, Takeda. S-W. Kim: Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca. F.A. Shepherd: Advisory / Consultancy, Research grant / Funding (institution), Shareholder / Stockholder / Stock options: AstraZeneca. J. Laskin: Research grant / Funding (institution): AstraZeneca, Roche, Boehringer Ingelheim, Pfizer; Honoraria (self): AstraZeneca, Roche, Pfizer. H. Akamatsu: Honoraria (self), Advisory / Consultancy: AstraZeneca; Honoraria (self), Honoraria (institution): Chugai; Honoraria (self), Honoraria (institution), Advisory / Consultancy: Pfizer; Honoraria (self), Honoraria (institution): Boehringer Ingelheim. W-C. Su: Travel / Accommodation / Expenses: Bristol-Myers Squibb; Travel / Accommodation / Expenses: Boehringer Ingelheim. T. John: Advisory / Consultancy: Roche, Bristol-Myers Squibb, Merck, Ignyta, AstraZeneca, Takeda, Boehringer Ingelheim, Pfizer. M. Sebastian: Honoraria (self), Honoraria (institution), Advisory / Consultancy, Speaker Bureau / Expert testimony: AstraZeneca, Roche, Novartis; Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony: Pfizer, Boehringer Ingelheim, Celgene, Takeda, Bristol-Myers Squibb, MSD; Honoraria (self), Advisory / Consultancy: Lilly. H. Mann: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. M. Miranda: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. G. Laus: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. Y. Rukazenkov: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. V. Papadimitrakopoulou: Honoraria (self): F Hoffman-La Roche; Advisory / Consultancy: Nektar Therapeutics, AstraZeneca Pharmaceuticals, Arrys Therapeutics, Merck&Co, LOXO Oncology, Araxes Pharma, F.Hoffman-LaRoche Ltd, Janssen Research Foundation, Bristol-Myers Squibb, Clovis Oncology, Eli Lilly &Co, Novartis Pharmaceuticals Corp. Takeda ; Research grant / Funding (institution): Eli Lilly &Co, Novartis, Merck, AstraZeneca Pharmaceuticals, F Hoffman-La Roche, Nektar Therapeutics, Janssen, Bristol-Myers Squibb, Checkmate, Incyte. All other authors have declared no conflicts of interest.

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Proffered paper session - Thoracic cancers Proffered Paper session

LBA16 - Osimertinib vs comparator EGFR-TKI as first-line treatment for EGFRm advanced NSCLC (FLAURA): Final overall survival analysis

Presentation Number
LBA16
Lecture Time
03:21 PM - 03:33 PM
Speakers
  • Byoung Chul Cho
Location
Hall 406, Singapore, Singapore, Singapore
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Authors
  • Byoung Chul Cho
  • Yuichiro Ohe
  • Caicun Zhou
  • Thanyanan Reungwetwattana
  • Ying Cheng
  • Busyamas Chewaskulyong
  • Ki Hyeong Lee
  • David Planchard
  • Johan F. Vansteenkiste
  • Jhanelle E. Gray
  • Riyaz Shah
  • Parneet Kaur Cheema
  • Marcello Tiseo
  • Thomas John
  • Rachel Hodge
  • Yuri Rukazenkov
  • Jean-Charles Soria
  • Meng-Chih Lin
  • Fumio Imamura
  • Suresh S. Ramalingam

Abstract

Background

Osimertinib is a 3rd-generation, irreversible, oral EGFR-TKI that potently and selectively inhibits both EGFR-mutated (EGFRm) and EGFR T790M resistance mutations, and has demonstrated efficacy in NSCLC CNS metastases. In the Phase III FLAURA study (NCT02296125), osimertinib resulted in significant progression-free survival (PFS) benefit (primary endpoint; datacut off [DCO] 12 June 2017) over comparator EGFR-TKI (HR 0.46, p < 0.001). Overall survival (OS) data were immature (25% maturity) at that time. Here, we report the final OS analysis (58% maturity).

Methods

Eligible patients (pts): ≥18 years (Japan: ≥20), treatment-naïve with Ex19del/L858R EGFRm advanced NSCLC; WHO performance status 0–1. Pts with stable CNS metastases not requiring steroids for ≥2 weeks were allowed. Pts were randomised 1:1 to osimertinib 80 mg once daily (qd) orally (po) or comparator EGFR-TKI (gefitinib 250 mg qd/erlotinib 150 mg qd po), stratified by mutation status (Ex19del/L858R) and race (Asian/non-Asian). Crossover was allowed for pts in the comparator EGFR-TKI arm upon central confirmation of progression and T790M positivity. Primary endpoint: PFS by RECIST v1.1, per investigator. OS was a secondary endpoint. DCO 25 June 2019.

Results

Globally, 556 pts were randomised to osimertinib (n = 279) or comparator EGFR-TKI (n = 277). Per study protocol, 70 (25%) pts crossed over from comparator EGFR-TKI to osimertinib. Osimertinib significantly improved OS vs comparator EGFR-TKI. All causality AEs, per investigator: osimertinib, 98% (grade ≥3, 42%); comparator EGFR-TKI, 98% (grade ≥3, 47%). AEs leading to discontinuation: osimertinib, 15%; comparator EGFR-TKI, 18%. The safety profile appears consistent with previously reported data.

Table: LBA16

Efficacy outputOsimertinib n = 279Comparator EGFR-TKI n = 277
OS hazard ratio0.799 (0.641, 0.997); p = 0.0462
(95.05% confidence interval)
Median OS, months38.6 (34.5, 41.8)31.8 (26.6, 36.0)
(95% confidence interval)
Deaths, total pts (%)155 (56)166 (60)
Median follow-up for OS in all pts, months35.827.0
Median follow-up for OS in censored* pts, months43.143.1
12-month survival rate, % (95% confidence interval)89 (85, 92)83 (77, 87)
24-month survival rate, % (95% confidence interval)74 (69, 79)59 (53, 65)
36-month survival rate, % (95% confidence interval)54 (48, 60)44 (38, 50)

OS for patients in the full analysis set was analysed using a log rank test (stratified by race and mutation type) for generation of the p-value and using the Breslow approach for handling ties. The median OS with 95% confidence intervals were calculated by Kaplan Meier technique. For statistical significance, a 2-sided p-value of less than 0.0495, as determined by the O’Brien-Fleming approach was required due the previous interim analysis.

Any patient not known to have died at the time of analysis was censored based on the last recorded date on which the patient was known to be alive.

Conclusions

Osimertinib provided a statistically significant and clinically meaningful improvement in OS vs comparator EGFR-TKI in first-line pts with EGFRm advanced NSCLC.

Clinical trial identification

NCT02296125.

Editorial acknowledgement

Natalie Griffiths, PhD, from iMed Comms, an Ashfield Company, funded by AstraZeneca.

Legal entity responsible for the study

AstraZeneca.

Funding

AstraZeneca.

Disclosure

B.C. Cho: Honoraria (institution), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Novartis; Honoraria (institution), Advisory / Consultancy, Research grant / Funding (institution): Bayer, AstraZeneca, MOGAM Institute, Dong-A ST, Janssen, Yuhan, Ono Pharmaceutical, Dizal Pharma, MSD; Honoraria (institution), Advisory / Consultancy, Research grant / Funding (institution), Licensing / Royalties: Champions Oncology; Honoraria (institution), Advisory / Consultancy: Boehringer Ingelheim, Roche, Bristol-Myers Squibb, Pfizer, Eli Lilly, Takeda; Shareholder / Stockholder / Stock options: TheraCanVac Inc. Y. Ohe: Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca, Chugai, Dainippon Lilly, Ono, BMS Japan, Daiichi Sankyo, BI, Bayer, Ignyta, Pfizer, MSD, Taiho, Novartis, Kyorin, Kyowa Hakko Kirin, Takeda, Celltrion, Kissei, Amgen, Janssen, Roxo. C. Zhou: Honoraria (self): Roche, Eli Lilly, BI, Merck, Hengrui, Qiru. B. Chewaskulyong: Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): AstraZeneca. D. Planchard: Advisory / Consultancy, Speaker Bureau / Expert testimony: AstraZeneca, Bristol-Myers Squibb, Boehringer Ingelheim, Celgene, Daiichi Sankyo, Eli Lilly, Merck, MedImmune, Novartis, Pfizer, prIME Oncology, Peer CME, Roche; Honoraria (self): AstraZeneca, Bristol-Myers Squibb, Boehringer Ingelheim, Celgene, Eli Lilly, Merck, Novartis, Pfizer, prIME Oncology, Peer CME, Roche; Research grant / Funding (institution): AstraZeneca, Bristol-Myers Squibb, AbbVie, Boehringer Ingelheim, Eli Lilly, Merck, Novartis, Pfizer, Roche, MedImmune, Sanofi-Aventis, Taiho Pharma, Novocure, Daiichi Sankyo; Travel / Accommodation / Expenses: AstraZeneca, Bristol-Myers Squibb, Boehringer Ingelheim , Roche, Merck, Novartis, prIME Oncology, Pfizer. J.F. Vansteenkiste: Research grant / Funding (institution): MSD; Advisory / Consultancy: – Apotex, AstraZeneca, Boehringer Ingelheim, MSD, Novartis, Roche; Speaker Bureau / Expert testimony: – AstraZeneca, BMS, MSD, Roche. J.E. Gray: Honoraria (self): AstraZeneca, Bristol-Myers Squibb, Takeda; Advisory / Consultancy: Bristol-Myers Squibb, Celgene, Takeda; Research grant / Funding (institution): Array, Merck, AstraZeneca, Genentech, Boehringer Ingelheim, Bristol-Myers Squibb. R. Shah: Honoraria (self), Travel / Accommodation / Expenses: Boehringer Ingelheim, Roche, AstraZeneca. P.K. Cheema: Honoraria (self), Advisory / Consultancy: AstraZeneca, Boehringer Ingelheim, Roche, Bristol-Myers Squibb, Merck, Takeda, Novartis, Genomic Health, Pfizer. M. Tiseo: Advisory / Consultancy: AstraZeneca, Bristol-Myers Squibb, MSD, Boehringer Ingelheim, Takeda; Research grant / Funding (institution): AstraZeneca, Boehringer Ingelheim. T. John: Advisory / Consultancy: Roche, Bristol-Myers Squibb, Merck, Ignyta, AstraZeneca, Takeda, Boehringer Ingelheim, Pfizer. R. Hodge: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. Y. Rukazenkov: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. J. Soria: Advisory / Consultancy: AstraZeneca, Astex, Clovis, GSK, GamaMabs, Lilly, MSD, Mission Therapeutics, Merus, Pfizer, PharmaMar, Pierre Fabre, Roche/Genentech, Sanofi, Servier, Symphogen, Takeda; Shareholder / Stockholder / Stock options: AstraZeneca, Gritstone; Full / Part-time employment: AstraZeneca. F. Imamura: Honoraria (self), Research grant / Funding (institution): AstraZeneca. S.S. Ramalingam: Honoraria (self), Advisory / Consultancy: AstraZeneca, Amgen, Bristol-Myers Squibb, Merck, Roche/Genentech, Loxo, Nektar, Tesaro; Research grant / Funding (institution): AstraZeneca, Amgen, Bristol-Myers Squibb, Merck, Tesaro, Advaxis, Takeda.

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Proffered paper session - Thoracic cancers Proffered Paper session

LBA17 - Longitudinal circulating tumour DNA (ctDNA) monitoring for early detection of disease progression and resistance in advanced NSCLC in FLAURA

Presentation Number
LBA17
Lecture Time
03:33 PM - 03:45 PM
Speakers
  • Thanyanan Reungwetwattana
Location
Hall 406, Singapore, Singapore, Singapore
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Authors
  • Thanyanan Reungwetwattana
  • Jhanelle E. Gray
  • Aleksandra Markovets
  • Naoyuki Nogami
  • Jong Seok Lee
  • Byoung Chul Cho
  • Busyamas Chewaskulyong
  • Margarita Majem
  • Nir Peled
  • Karthick Vishwanathan
  • Alexander Todd
  • Yuri Rukazenkov
  • Martin Johnson
  • Carl Barrett
  • Juliann Chmielecki
  • Ryan Hartmaier
  • Suresh S. Ramalingam

Abstract

Background

In the phase III FLAURA study (NCT02296125), the 3rd-generation EGFR-TKI osimertinib showed superior efficacy to comparator EGFR-TKIs in previously untreated EGFR-mutated (EGFRm) advanced non-small cell lung cancer (NSCLC). Here we report results from an exploratory analysis of ctDNA for the early detection of disease progression (PD) in FLAURA.

Methods

Treatment-naïve patients (pts) with EGFRm (ex19del/L858R) locally advanced/metastatic NSCLC (n = 556) were randomised 1:1 (osimertinib 80 mg qd: comparator [gefitinib 250 mg qd/erlotinib 150 mg qd]). Plasma samples were collected on Days 1, 8 and 15, then every 21 days for weeks (W) 3–18, then every 6W thereafter. In pts who had a plasma sample on PD and/or discontinuation, ctDNA droplet digital PCR (ddPCR; Biodesix) for EGFRm (ex19del/L858R/T790M) was performed at all available time points and C797S for post-W6 time points. C797S and T790M were the only resistance mutations assayed. ctDNA progression was defined with respect to the nadir ctDNA result and its proximity to the ddPCR detection and quantification limits.

Results

The ctDNA progression analysis included 122/556 (22%) pts with valid longitudinal monitoring ddPCR data and RECIST PD by DCO1 (12 June 2017). Across both arms, ctDNA progression preceded or co-occurred with PD in 80/122 (66%) pts with 2.7 months (mo) median lead time; 9.5 mo median progression-free survival (mPFS; n = 80). Acquired C797S or T790M was detected in 57/122 (47%) pts with ctDNA progression (osimertinib 4/50 [8%] C797S, comparator 53/72 [74%] T790M); median time to detection was 16.7 and 8.4 mo for the osimertinib and comparator arms, respectively, mirroring overall mPFS. In pts with ctDNA progression and PD (n = 106), acquired T790M and C797S were detected either at the same time as, or earlier than PD in 41/106 (38%) pts (osimertinib 2/39 [5%], comparator 39/67 [58%]); median lead time was 1.4 mo.

Conclusions

ctDNA monitoring may allow for earlier identification of pts who progress on first-line EGFR-TKI therapy and the detection of EGFR-mediated resistance mechanisms in advance of PD in EGFRm NSCLC. Future work aims to explore early detection of non-EGFR-mediated resistance.

Clinical trial identification

NCT02296125.

Editorial acknowledgement

Donna Tillotson, PhD, of iMed Comms, Macclesfield, UK, an Ashfield Company, part of UDG Healthcare plc, funded by AstraZeneca in accordance with Good Publications Practice (GPP3) guidelines.

Legal entity responsible for the study

AstraZeneca.

Funding

AstraZeneca.

Disclosure

J.E. Gray: Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca; Research grant / Funding (institution): Array; Research grant / Funding (institution): Merck; Research grant / Funding (institution): Genentech; Research grant / Funding (institution): Boehringer Ingelheim; Honoraria (self), Advisory / Consultancy, Research grant / Funding (institution): Bristol-Myers Squibb; Advisory / Consultancy: Celgene; Honoraria (self), Advisory / Consultancy: Takeda. A. Markovets: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. N. Nogami: Honoraria (self): Pfizer Inc., Chugai Pharmaceutical Co. Ltd, Eli Lilly, Taiho Pharmaceutical Co. Ltd., AstraZeneca, Kyowa Hakko Kirin, Ono Pharmaceutical Co. Ltd., Bristol-Myers Squibb, MSD. B.C. Cho: Honoraria (institution), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): Novartis; Honoraria (institution), Advisory / Consultancy, Research grant / Funding (institution): Bayer, AstraZeneca, MOGAM Institute, Dong-A ST, Janssen, Yuhan, Ono Pharmaceutical, Dizal Pharma, MSD; Honoraria (institution), Advisory / Consultancy, Research grant / Funding (institution), Licensing / Royalties: Champions Oncology; Honoraria (institution), Advisory / Consultancy: Boehringer Ingelheim, Roche, Bristol-Myers Squibb, Pfizer, Eli Lilly, Takeda; Shareholder / Stockholder / Stock options: TheraCanVac Inc. B. Chewaskulyong: Honoraria (self), Advisory / Consultancy, Speaker Bureau / Expert testimony, Research grant / Funding (institution): AstraZeneca. M. Majem: Advisory / Consultancy, Speaker Bureau / Expert testimony: Roche; Speaker Bureau / Expert testimony, Research grant / Funding (self), Travel / Accommodation / Expenses: Bristol-Myers Squibb; Advisory / Consultancy, Speaker Bureau / Expert testimony, Travel / Accommodation / Expenses: MSD; Advisory / Consultancy, Speaker Bureau / Expert testimony, Travel / Accommodation / Expenses: AstraZeneca; Advisory / Consultancy, Speaker Bureau / Expert testimony: Boehringer Ingelheim; Advisory / Consultancy: Tesaro; Speaker Bureau / Expert testimony: Hellsin; Travel / Accommodation / Expenses: Lilly; Advisory / Consultancy: Takeda; Advisory / Consultancy, Speaker Bureau / Expert testimony: Pierre Fabre; Speaker Bureau / Expert testimony: Amgen. N. Peled: Honoraria (self), Advisory / Consultancy, Research grant / Funding (self): AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, MSD, Novartis, Pfizer, Roche, Takeda; Advisory / Consultancy: Eli Lilly; Honoraria (self): Foundation Medicine; Shareholder / Stockholder / Stock options: Novellus Dx; Honoraria (self): Guardant360. K. Vishwanathan: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. A. Todd: Full / Part-time employment: AstraZeneca. Y. Rukazenkov: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. M. Johnson: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. C. Barrett: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. J. Chmielecki: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca. R. Hartmaier: Shareholder / Stockholder / Stock options, Full / Part-time employment: AstraZeneca; Shareholder / Stockholder / Stock options, Licensing / Royalties, Nfe2l2 exon 2 ano/or exon 3 loss from work conducted at Foundation Medicine; provisional patent filed: Foundation Medicine. S.S. Ramalingam: Advisory / Consultancy, Research grant / Funding (self): Amgen, AstraZeneca, Bristol-Myers Squibb, Merck; Advisory / Consultancy: AbbVie, Celgene, Genentech, Lilly, Loxo, Takeda; Research grant / Funding (self): Tesaro.

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Proffered paper session - Thoracic cancers Proffered Paper session

Invited Discussant 475O, LBA16 and LBA17

Lecture Time
03:45 PM - 04:00 PM
Speakers
  • Pilar Garrido Lopez
Location
Hall 406, Singapore, Singapore, Singapore
Date
Fri, 22.11.2019
Time
02:30 PM - 04:00 PM
Authors
  • Pilar Garrido Lopez