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P1.01 - Advanced NSCLC (ID 757)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: Advanced NSCLC
- Presentations: 1
- Coordinates: 10/16/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
P1.01-012 - Ceritinib in Anaplastic Lymphoma Kinase (ALK)+ NSCLC Patients Pretreated With Only Crizotinib: ASCEND-1 Subgroup Analysis (ID 8972)
09:30 - 16:00 | Author(s): P. Urban
In phase 1 ASCEND-1 study (NCT01283516), ceritinib 750 mg/day (fasted) demonstrated durable whole-body and intracranial responses in both anaplastic lymphoma kinase inhibitor (ALKi)-naïve and ALKi-pretreated patients with ALK-rearranged non-small cell lung cancer (NSCLC). Here, we report the efficacy and safety of ceritinib in patients who were pretreated with crizotinib only from the ASCEND-1 study.
Patients with ALK+ NSCLC who were enrolled globally received ceritinib 750 mg/day (fasted). Efficacy and safety were evaluated in a subset of patients who had received prior crizotinib only (no other prior antineoplastic therapy). Data cut-off was May 03, 2016.
Overall, 246 patients with ALK+ NSCLC (83 ALKi-naïve and 163 ALKi-pretreated) received ≥1 dose of ceritinib, of whom, 26 had received prior crizotinib only. Among the 26 crizotinib-pretreated patients, 11 (42.3%) had baseline brain metastases, of which, 7 received prior radiotherapy, 6 (23.1%) had an ECOG performance status of 0, and 24 (92.3%) patients had stage IV disease. The median time from initial diagnosis to ceritinib initiation was 10.5 months (range, 2.4-33.0). At data cut-off, the median duration of exposure (range) was 41.0 weeks (2.9-180.4). In the 26 crizotinib-pretreated patients, per investigator assessment, the overall response rate was 65.4% (95% confidence interval [CI]: 44.3, 82.8), and the disease control rate was 80.8% (95% CI: 60.6, 93.4) (Table). The most frequently reported grade 3/4 adverse events (AEs), regardless of study drug relationship, were ALT increased (30.8%), AST increased (15.4%), diarrhea (11.5%), nausea (7.7%), fatigue (7.7%), and blood alkaline phosphatase increased (7.7%). All 26 patients discontinued treatment due to disease progression (n=12), consent withdrawal (n=6), AEs (n=2), administrative problems (n=4), or death (n=2).
*Median value derived from summary statistics; **Median value estimated by Kaplan-Meier method.
Investigator Assessment N=26 Blinded Independent Review Committee Assessment N=26 Best overall response Complete response (CR), n (%) 1 (3.8%) 1 (3.8%) Partial response (PR), n (%) 16 (61.5%) 15 (57.7%) Stable disease (SD), n (%) 4 (15.4%) 5 (19.2%) Progressive disease (PD), n (%) 2 (7.7%) 1 (3.8%) Unknown, n (%) 3 (11.5%) 4 (15.4%) Overall response rate (ORR), % [95% CI] 65.4% [44.3-82.8] 61.5% [40.6-79.8] Disease control rate (DCR), % [95% CI] 80.8% [60.6-93.4] 80.8% [60.6-93.4] Median time to response*, weeks [95% CI] 6.1 [5.1-23.6] 6.4 [5.1-14.0] Median DOR**, months [95% CI] 8.3 [4.2-11.2] 8.5 [3.0-13.6] Median PFS**, months [95% CI] 8.5 [5.3-9.9] 8.2 [4.4-15.2]
Ceritinib demonstrated durable efficacy in crizotinib-pretreated patients with ALK-rearranged NSCLC. Safety was consistent with the overall ASCEND-1 study population.
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