RT Journal Article T1 Phase II trial of dacomitinib, a pan-human EGFR tyrosine kinase inhibitor, in recurrent glioblastoma patients with EGFR amplification. A1 Sepulveda-Sanchez, Juan Manuel A1 Vaz, Maria Angeles A1 Balaña, Carmen A1 Gil-Gil, Miguel A1 Reynes, Gaspar A1 Gallego, Oscar A1 Martinez-Garcia, Maria A1 Vicente, Elena A1 Quindos, Maria A1 Luque, Raquel A1 Ramos, Ana A1 Ruano, Yolanda A1 Perez-Segura, Pedro A1 Benavides, Manuel A1 Sanchez-Gomez, Pilar A1 Hernandez-Lain, Aurelio K1 EGFR K1 Dacomitinib K1 Glioblastoma K1 High-grade glioma AB We conducted a multicenter, 2-stage, open-label, phase II trial to assess the efficacy and safety of dacomitinib in adult patients with recurrent glioblastoma (GB) and epidermal growth factor receptor gene (EGFR) amplification with or without variant III (EGFRvIII) deletion. Patients with first recurrence were enrolled in 2 cohorts. Cohort A included patients with EGFR gene amplification without EGFRvIII mutation. Cohort B included patients with EGFR gene amplification and EGFRvIII mutation. Dacomitinib was administered (45 mg/day) until disease progression/unacceptable adverse events (AEs). Primary endpoint was progression-free survival (PFS; RANO criteria) at 6 months (PFS6). Thirty patients in Cohort A and 19 in Cohort B were enrolled. Median age was 59 years (range 39-81), 65.3% were male, and Eastern Cooperative Oncology Group Performance Status 0/1/2 were 10.2%/65.3%/24.5%, respectively. PFS6 was 10.6% (Cohort A: 13.3%; Cohort B: 5.9%) with a median PFS of 2.7 months (Cohort A: 2.7 mo; Cohort B: 2.6 mo). Four patients were progression free at 6 months and 3 patients were so at 12 months. Median overall survival was 7.4 months (Cohort A: 7.8 mo; Cohort B: 6.7 mo). The best overall response included 1 complete response and 2 partial responses (4.1%). Stable disease was observed in 12 patients (24.5%: eight in Cohort A and four in Cohort B). Diarrhea and rash were the most common AEs; 20 (40.8%) patients experienced grade 3-4 drug-related AEs. Dacomitinib has a limited single-agent activity in recurrent GB with EGFR amplification. The detailed molecular characterization of the 4 patients with response in this trial can be useful to select patients who could benefit from dacomitinib. PB Oxford University Press YR 2017 FD 2017-06-01 LK http://hdl.handle.net/10668/11264 UL http://hdl.handle.net/10668/11264 LA en NO Sepúlveda-Sánchez JM, Vaz MÁ, Balañá C, Gil-Gil M, Reynés G, Gallego Ó, et al. Phase II trial of dacomitinib, a pan-human EGFR tyrosine kinase inhibitor, in recurrent glioblastoma patients with EGFR amplification. Neuro Oncol. 2017 Oct 19;19(11):1522-1531 DS RISalud RD Apr 19, 2025