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Eric Dansin
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MA07 - Clinical Questions and Potential Blood Markers for Immunotherapy (ID 125)
- Event: WCLC 2019
- Type: Mini Oral Session
- Track: Immuno-oncology
- Presentations: 1
- Now Available
- Moderators:David R Spigel, Roberto Ferrara
- Coordinates: 9/08/2019, 13:30 - 15:00, Vancouver (2003)
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MA07.05 - Immune Checkpoint Inhibitor (ICPi) Re-Challenge: Outcomes Analysis in a French National Cohort of Non-Small-Cell Lung Cancer (NSCLC) Patients (Now Available) (ID 1903)
13:30 - 15:00 | Author(s): Eric Dansin
- Abstract
- Presentation
Background
Anti-PD1/PDL1 deeply changed the NSCLC therapeutic algorithm in the past few years. Unfortunately, a majority of patients experiences disease progression. ICPis re-challenge could be an attractive option but no data supporting this strategy are available. Here we report outcomes of a large cohort of NSCLC patients treated with anti-PD1/PDL1 re-challenge.
Method
We retrospectively collected data about 144 advanced NSCLC patients (diagnosis between 2010 and 2018) from 26 French centers. Patients were re-challenged with ICPis after at least 12 weeks of discontinuation for toxicity, disease progression or clinical decision. Progression Free Survival (PFS) and Overall Survival (OS) were calculated from the start of first or second ICPi to disease progression (PFS1;PFSR) and death or last follow-up (OS1;OS2) respectively.
Result
Median age was 63 year [39 –83], most of patients were male (67%), smokers (87%), adenocarcinomas (62%) and stage IV at diagnosis (66%). Most of patients received the first ICPi round in first or second line (66%) and the second ICPi round in third line or later (79%). In both settings patients received preferentially an anti-PD1 (87%) and no differences were detected regarding brain metastasis or ECOG PS (P = 1.10-1 and P = 1.10-1 respectively). The Best Response during the re-challenge was not associated to that one achieved to the first ICPi (P = 1.10-1). The median PFS1 and PFSR were 13 months [95% CI 10-16.5] and 4.4 months [95% CI 3-6.5] respectively. PFSR was longer in patients discontinued because of clinical decision (6.5 months [95% CI 2.5-11.9]) or toxicity (5.8 months [95%CI 3.5-18]) compared to disease progression (2.9 months [95% CI 2.0-4.4]) (P = 2.10-2) and in those not receiving chemotherapy between the two ICPis (5.8 months [95%CI 4.1-10.5]) compared to those who did (3.0 months [95% CI 2.0-4.4])(P = 2.10-3). Median OS1 was 3.3 years [95% CI 2.9-3.9] without differences according to the discontinuation reason (P =2.10-1). Median OS2 was 1.5 y [95%CI 1.0-2.1] and was longer in patients discontinuing the first ICPi due to toxicity (2.1y [95%CI 1.4-NR]) compared to disease progression (1.0y [95%CI 0.4-1.5]) or clinical decision (1.5y [95%CI 0.4-NR]) (P = 3.10-2). Neither OS1 nor OS2 were affected by treatments received between the two ICPis (P = 3.10-1 and P = 1.10-1 respectively).
Conclusion
ICPis re-challenge might be a useful option mainly in patients discontinuing the first ICPi because of toxicity or clinical decision and in those able to keep a treatment-free period between the two ICPis.
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OA15 - Targeted Agents and Immunotherapy for Small Cell Lung Cancer (ID 152)
- Event: WCLC 2019
- Type: Oral Session
- Track: Small Cell Lung Cancer/NET
- Presentations: 1
- Now Available
- Moderators:Raffaele Califano, Charles M Rudin
- Coordinates: 9/10/2019, 14:30 - 16:00, Hilton Head (1978)
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OA15.02 - Carboplatin-Etoposide Versus Topotecan as Second-Line Treatment for Sensitive Relapsed Small-Cell Lung Cancer: Phase 3 Trial (Now Available) (ID 546)
14:30 - 16:00 | Author(s): Eric Dansin
- Abstract
- Presentation
Background
Topotecan is currently the only drug approved in Europe in second line setting for small-cell lung cancer (SCLC). This study investigates whether the doublet carboplatin-Etoposide was superior to topotecan monotherapy as second-line treatment in patients with sensitive relapsed SCLC.
Method
this open-label, multicenter, phase 3 trial randomized patients with SCLC that responded to first-line platin etoposide doublet treatment but showed evidence of disease relapse or progression at least 90 days after completion of the first-line treatment. Enrolled patients were randomly assigned (1:1) to receive combination chemotherapy (Six cycles of 3-weeks Carboplatin, AUC 5, day 1 and Etoposide 100 mg/Sqm/d 1-3, intra-venous) or oral Topotecan (2.3 mg/Sqm/d 1-5, every 3 weeks). Primary endpoint was progression free survival (PFS). Secondary endpoints were overall survival (OS), objective response rate (ORR), quality of life and tolerance in the intention-to-treat population, (clinical trialgouv: NCT02738346)
Result
178 patients were screened and 164 randomized in 36 centers, with 82 assigned to each treatment group (age: 64.5 ± 7.2 years, men: 72.8%, PS 0/1/>1: 34.7%/56.3%/ 9%. Median PFS was significantly longer in combination chemotherapy group (4.7 months, 95% CI: 3.9-5.5) compare to topotecan group (2.7 months, 95% CI: 2.3-3.2), HR: 0.6, 95% CI 0.4-0.8, p < 0.002. The ORR were significantly more important in the combination chemotherapy than in topotecan arm (ORR 49 % vs 25 %, p < 0,002), but without difference in term of median OS, 7.5 months (95% CI: 5.4-8.7) in combination chemotherapy group versus 7.4 months (95% CI.6.0-9.3) in topotecan arm. Grade 3/4 neutropenia were significantly more common in the topotecan group than in the combination chemotherapy group (35.8% vs 19.7 %, p < 0.001. There is a non-significant trend for more febrile neutropenia in topotecan arm compare to combination arm (13.6 % 6.2 %, p = 0.19, and no difference for grade 3/4 thrombopenia, 35.8 % vs 30.9 %, and anemia, 24.6 % vs 21 %, for topotecan and combination arms, respectively. Two treatment-related deaths occurred in the topotecan arm (febrile neutropenia with sepsis), none in the combination arm. Results of quality of life outcomes will be presented at the meeting.
Conclusion
platin - etoposide re-challenge can be considered as a standard second-line chemotherapy for sensitive relapsed SCLC.
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