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A phase 1b/2 study of PF-06747775 as monotherapy or in combination with Palbociclib in patients with epidermal growth factor receptor mutant advanced non-small cell lung cancer
Cited 5 time in
Web of Science
Cited 5 time in Scopus
- Authors
- Issue Date
- 2022-07
- Publisher
- Ashley Publications Ltd.
- Citation
- Expert Opinion on Investigational Drugs, Vol.31 No.7, pp.747-757
- Abstract
- Introduction This Phase 1/2 study (NCT02349633) explored the safety and antitumor activity of PF-06747775 (oral, third-generation epidermal growth factor receptor [EGFR] tyrosine kinase inhibitor) in patients with advanced non-small cell lung cancer after progression on an EGFR inhibitor. Methods Phase 1 was a dose-escalation study of PF-06747775 monotherapy (starting dose: 25 mg once daily [QD]). Phase 1b/2 evaluated PF-06747775 monotherapy at recommended Phase 2 dose (RP2D; Cohort 1); PF-06747775 200 mg QD plus palbociclib (starting dose: 100 mg QD orally; Cohort 2A); and PF-06747775 monotherapy at RP2D in a Japanese lead-in cohort. Results Sixty-five patients were treated. Median treatment duration was 40.1 weeks. Monotherapy maximum tolerated dose was not determined. Two patients in Cohort 2A had dose-limiting toxicities. The monotherapy RP2D was estimated to be 200 mg QD. Most frequently reported adverse events (AEs) were diarrhea (69.2%), paronychia (69.2%), and rash (60.0%). Most AEs were grades 1-3. Overall, objective response rate (90% confidence interval [CI]) was 41.5% (31.2-52.5%). Median (range) duration of response was 11.09 (2.70-34.57) months. Median progression-free survival (90% CI) was 8.1 (5.4-23.3) months. Conclusions PF-06747775 had a manageable safety profile and the study design highlights important considerations for future anti-EGFR agent development.
- ISSN
- 1354-3784
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