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T. Yoshimoto
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P3.01 - Poster Session/ Treatment of Advanced Diseases – NSCLC (ID 208)
- Event: WCLC 2015
- Type: Poster
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/09/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)
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P3.01-020 - Updated Data from JP28927 Study of Alectinib in ALK+ NSCLC Patients with or without History of ALK Inhibitor Treatment (ID 346)
09:30 - 09:30 | Author(s): T. Yoshimoto
- Abstract
Background:
Alectinib, a next generation ALK inhibitor, was granted approval in Japan 2014, since it showed good efficacy and tolerability in ALK+ NSCLC patients without previous ALK inhibitor treatment in Phase I/II study (AF-001JP). We also reported its promising response and good tolerability for crizotinib pre-treated patients in JP28927 study (ESMO 2014). This report describes the update of efficacy and safety result in JP28927 study.
Methods:
Patients (with/without prior ALK inhibitor treatment) who had ALK+ NSCLC were enrolled in JP28927. Patients received alectinib (300mg) twice daily; treatment was continued until the investigator determined lack of clinical benefit.
Results:
Thirty-five patients were enrolled into JP28927 study. Median follow-up duration was 400 days (35-457 days). The median progression free survival (PFS) of 35 patients was 13.9 months (95%CI: 11.1- NR). Among 30 patients with the target lesions at base line, the overall response rate (ORR) was 70% (95%CI: 50.6-85.3) with rapid response (the median time to response was 1.2 months [95%CI: 1.1-2.1]). Twenty-three out of 35 patients had been confirmed the progressive disease with crizotinib treatment. Their median PFS was 12.9 months (95%CI: 3.9-NR). Twenty out of 23 patients had the target lesions at base line. ORR was 65% (95%CI: 40.8-84.6) and the median time to response was 1.2 months (95%CI: 1.1-1.3). The treatment-related adverse events (AEs) observed in more than 10% of the patients were constipation (31.4%), dysgeusia (25.7%), WBC count decreased (22.9%), neutrophil count decreased (22.9%), vomiting (14.3%), rash (14.3%), blood bilirubin increased (14.3%) and AST increase (14.3%). Treatment-related Grade 3 AEs, i.e. pulmonary thrombosis, lymphocyte count decrease, hypophosphatemia, were observed in 3 patients. No treatment-related Grade 4 or 5 AEs were observed.
Conclusion:
The updated results in JP28927 study once again endorsed our previous reports which had indicated alectinib’s promising response even for ALK+NSCLC patients who failed to crizotinib treatment.
