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Immunotherapy and next-generation TKIs: From second to frontline treatment (ID 55)
- Event: ELCC 2018
- Type: Poster Discussion session
- Presentations: 1
- Moderators:P. Garrido Lopez, S. Ekman, S. Ortiz-Cuaran, E. Wauters
- Coordinates: 4/12/2018, 07:45 - 09:00, Room A
143PD - Competing central nervous system or systemic progression analysis for patients with EGFR mutation-positive NSCLC receiving afatinib in LUX-Lung 3, 6, and 7 (ID 561)
07:45 - 09:00 | Author(s): V. Hirsh
CNS metastases are known complications of advanced EGFRm+ NSCLC, thus, LUX-Lung (LL) trials investigating afatinib allowed enrolment of patients (pts) with brain metastases (BM). LL3, 6 and 7 previously demonstrated activity of afatinib in pts with BM, with the magnitude of progression-free survival (PFS) improvement with afatinib vs chemotherapy or gefitinib in pts with BM being similar to that observed in pts without BM (HR 0.54, 0.47, and 0.76 in LL3, 6 and 7, respectively).[1,2] PFS was significantly improved with afatinib vs chemotherapy in a combined analysis of LL3 and 6 in pts with asymptomatic BM (HR 0.50, p = 0.0297). To investigate whether afatinib can prevent CNS progression or metastasis, competing risk analyses for the progression and metastasis pattern in the CNS or non-CNS region were carried out in pts with and without BM in LL3, 6 and 7.
Competing risk analyses were performed in pts with stage IIIB/IV EGFRm+ NSCLC who received afatinib 40 mg/d in LL3, 6 and 7. Analyses were performed separately for pts with baseline BM and without baseline BM. Risk of CNS progression vs non-CNS progression or death was calculated based on the cumulative frequency of the event of interest vs the competing risk event.
In pts with baseline BM receiving afatinib in LL3 and 6 (n = 48; median follow-up 10.3 mo), 31.3% had CNS progression vs 52.1% with non-CNS progression: cumulative incidence at 6 and 12 mo (CNS vs non-CNS) was 15.5% vs 17.7%, and 24.5% vs 24.4%, respectively. In pts without baseline BM receiving afatinib in LL3, 6 and 7 (n = 485; median follow-up 13.0 mo), risk of de novo CNS progression was very low (6.4%) compared with non-CNS progression (78.4%). Cumulative incidence at 6 and 12 mo (CNS vs non-CNS) was 1.3% vs 17.2%, and 2.6% vs 41.2%, respectively.
Competing risk analyses using data from LL3, 6 and 7 add to the existing evidence that support afatinib use in pts with EGFRm+ NSCLC and CNS metastases. Taken together, these results suggest afatinib delays the onset/progression of BM. 1. Schuler. J Thorac Oncol 2016;11:380–90 2. Park. Lancet Oncol 2016;17: 577–89
Clinical trial identification:
NCT00949650, NCT01121393, NCT01466660
Legal entity responsible for the study:
J.C-H. Yang: Honoraria/advisory board: Boehringer Ingelheim, Eli Lilly, Bayer, Roche/Genentech/Chugai, Astellas, MSD, Merck Serono, Pfizer, Novartis, Clovis Oncology, Celgene, Merrimack, Yuhan Pharma, BMS, Ono Pharma Daiichi Sankyo, Astrazeneca. Y-L. Wu: Honoraria: AstraZeneca, Roche, Eli Lilly, Pfizer, Sanofi. V. Hirsh: Advisory Board: BI. K. O'Byrne: Advisory board & Honoraria: Astrazeneca, BMS, Roche-Genentech, MSD, Pfizer, Boehringer-Ingelheim, Novartis Speaker bureau activities: Astrazeneca, BMS, Roche-Genentech, MSD, Pfizer, Boehringer-Ingelheim Travel to international conferences: Astrazeneca, BMS, Roche-Genentech, MSD, Pfizer, Boehringer-Ingelheim 3 patents –1 on novel drugs and 2 on biomarkers – IP held by University. N. Yamamoto: Membership on an advisory board or board of directors: BI, AZ, Chugai Corporate-sponsored research: BI. S. Popat: Membership on an advisory board or board of directors: BI. A. Tamiya: Grants from Ono Pharmaceutical, Bristol-Myers Squibb Received personal fees from Eli Lilly, Ono Pharmaceutical, Chugai Pharmaceutical, Boehringer Ingelheim, AstraZeneca, Bristol-Myers Squibb. A. Märten: Employment Boehringer Ingelheim. M. Schuler: Employment: Universität Duisburg-Essen, Universitätsklinikum Essen, Ruhrlandklinik Consultant (compensated): AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Novartis, Roche Consultant (not compensated): Institut für Qualität und Wirtschaftlichkeit im Gesundheitswesen (IQWiG) Honoraries (CME presentations): Abbvie, Alexion, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Lilly, MSD, Novartis Research funding (institution) Boehringer Ingelheim, Bristol Myers-Squibb, Novartis Pantent: Universität Duisburg-Essen.
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