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OA05 - Clinical Trials in IO (ID 899)
- Event: WCLC 2018
- Type: Oral Abstract Session
- Track: Advanced NSCLC
- Presentations: 1
- Coordinates: 9/24/2018, 13:30 - 15:00, Room 106
OA05.07 - IMpower132: PFS and Safety Results with 1L Atezolizumab + Carboplatin/Cisplatin + Pemetrexed in Stage IV Non-Squamous NSCLC (ID 12389)
14:35 - 14:45 | Author(s): Zsuzsanna Szalai
In addition to the combination of atezolizumab (anti–PD-L1)+platinum+taxane±bevacizumab, non-squamous NSCLC patients may derive benefit from adding atezolizumab to platinum+pemetrexed. The randomized Phase III IMpower132 study (NCT02657434) evaluated first-line pemetrexed+carboplatin or cisplatin±atezolizumab in patients with stage IV non-squamous NSCLC without EGFR or ALK driver mutations.a9ded1e5ce5d75814730bb4caaf49419 Method
Patients were randomized 1:1 to receive 4 or 6 cycles of carboplatin AUC 6 mg/mL/min or cisplatin 75 mg/m2 + pemetrexed 500 mg/m2 Q3W alone (arm PP) or in combination with atezolizumab 1200 mg Q3W (arm APP), followed by pemetrexed (arm PP) or atezolizumab + pemetrexed (arm APP) maintenance. Atezolizumab could be continued beyond disease progression per protocol guidelines. PFS and OS were co-primary endpoints. Efficacy by PD-L1 expression was an exploratory endpoint. Here, we present investigator-assessed PFS per RECIST v1.1 (final analysis), OS (interim analysis) and safety data.4c3880bb027f159e801041b1021e88e8 Result
292 pts were enrolled in arm APP and 286 pts in arm PP. 43% and 40% in arms APP and PP, respectively, had ECOG PS 0. At the data cutoff (22 May 2018), median follow-up was 14.8 mo overall. PFS analysis showed a statistically significant improvement between arm APP vs PP (median PFS 7.6 vs 5.2 mo; HR=0.596; 95% CI: 0.494, 0.719; P<0.0001). Interim analysis showed a numerical but non-statistically significant OS improvement (Table). Efficacy results were consistent across all key clinical subgroups. Grade 3-4 TRAEs occurred in 53.6% of patients (APP) vs 39.1% (PP). 7.2% of patients (APP) vs 5.1% (PP) had a Grade 5 AE, 3.8% (APP) vs 2.6% (PP) were treatment related. 48.5% of patients (APP) vs 38.0% (PP) experienced AEs of special interest specific to atezolizumab.8eea62084ca7e541d918e823422bd82e Conclusion
IMpower132 met its co-primary endpoint of investigator-assessed PFS in the ITT. Interim OS data (not fully mature) showed numerical improvement. Atezolizumab+pemetrexed+carboplatin or cisplatin was well tolerated, and no new safety signals were identified.
Table. IMpower132 Efficacy Analyses APP Arm
(atezolizumab+pemetrexed+ carboplatin or cisplatin)
(pemetrexed+carboplatin or cisplatin)
ITT n=292 n=286 Median PFS (95% CI), mo 7.6 (6.6, 8.5) 5.2 (4.3, 5.6) HRa (95% CI; P value) 0.596 (0.494, 0.719; P < 0.0001) 12-Month PFS (95% CI), % 33.7% (28.2, 39.2) 17.0% (12.6, 21.4) Median OS (95% CI), mo 18.1 (13.0, NE) 13.6 (11.4, 15.5) HRa (95% CI; P value) 0.813 (0.644, 1.025; P = 0.0797) 12-Month OS (95% CI), % 59.6% (53.9, 65.3) 55.4% (49.5, 61.2) ORR (confirmed, inv-assessed), % 46.9% 32.2% DOR (95% CI), mo 10.1 (7.2, 13.3) 7.2 (5.7, 9.0) PD-L1–highb n=25 n=20 Median PFS (95% CI), mo 10.8 (7.9, NE) 6.5 (2.4, 10.6) HR (95% CI; P value) 0.464 (0.224, 0.960; P = 0.0339) PD-L1–lowb n=63 n=73 Median PFS (95% CI), mo 6.2 (4.4, 8.4) 5.7 (4.2, 7.9) HR (95% CI; P value) 0.804 (0.556, 1.163; P = 0.2462) PD-L1–negativeb n=88 n=75 Median PFS (95% CI), mo 8.5 (6.1, 11.2) 4.9 (4.2, 5.8) HR (95% CI; P value) 0.448 (0.313, 0.642; P < 0.0001)
DOR, duration of response; HR, hazard ratio; inv, investigator; ORR, objective response rate; OS, overall survival; PFS, progression-free survival.
a Stratified. b Baseline tissue available in 60% of patients. PD-L1–high (TC3/IC3): patients with PD-L1 expression in ≥50% of tumor cells or ≥10% of tumor-infiltrating immune cells; PD-L1–low (TC12/IC12): patients with PD-L1 expression in ≥1% and <50% of tumor cells or ≥1% and <10% of tumor-infiltrating immune cells; and PD-L1–negative (TC0/IC0): patients with PD-L1 expression in <1% of tumor cells and <1% of tumor-infiltrating immune cells.NCT02657434
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P2.01 - Advanced NSCLC (Not CME Accredited Session) (ID 950)
- Event: WCLC 2018
- Type: Poster Viewing in the Exhibit Hall
- Presentations: 1
- Coordinates: 9/25/2018, 16:45 - 18:00, Exhibit Hall
P2.01-95 - Assesment the Fitness for Chemotherapy of NSCLC Patients using 6MWT (ID 13745)
16:45 - 18:00 | Presenting Author(s): Zsuzsanna Szalai
Decision making in chemotherapy in multimorbid advanced NSCLC patients is a complex and challenging task. Physcian reported ECOG performance status (PS), being reproducible, is the gold standard of functional status quantification, when planning an oncology treatment. Inaccurate assesment of PS score is associated with an increased risk of treatment complications and therapy related deaths.
The aim of study was to measure the correlation between 6-minute walking test (6MWT), PS and chemotherapy endurance and to study the role of 6MWT in predicting treatment complications and deaths.a9ded1e5ce5d75814730bb4caaf49419 Method
138 advanced stage (IIIA, IIIB, IV) NSCLC consented patients were enrolled in a prospective study. They were grouped according to their 6MWT results, and correlation with PS, BMI, FEV1, laboratory values, chemotherapy regimes and cycles were analyzed, with respect to the treatment complications and deaths as endpoints. Statistical analysis was performed with SPSS, Inc., Chicago, IL (level of significance < 0,05).4c3880bb027f159e801041b1021e88e8 Result
Statistical correlation was found between the 6MWT and chemotherapy endurance. Low 6MWT results (with a cut-off of 360 and 300 m respectively) were significantly associated with a very high risk of hematologic complications (36% and 42%), hospitalization (42% and 56%) and 3-month mortality (45% and 69%). No statistical correlation was found between 6MWT to PS, age, FEV1, BMI and initial lab values.8eea62084ca7e541d918e823422bd82e Conclusion
6MWT seems to be a simple, reliable and objective tool in assessing a patient’s fitness to palliative chemotherapy for advanced NSCLC. Optimisation of treatment protocols, using 6MWT as a supportive tool to facilitate PS assesment, might prevent overtreatment of the patient and abuse of health service/insurance budgets.6f8b794f3246b0c1e1780bb4d4d5dc53