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  • Title: SWOG S1400D (NCT02965378), a Phase II Study of the Fibroblast Growth Factor Receptor Inhibitor AZD4547 in Previously Treated Patients With Fibroblast Growth Factor Pathway-Activated Stage IV Squamous Cell Lung Cancer (Lung-MAP Substudy).
    Author: Aggarwal C, Redman MW, Lara PN, Borghaei H, Hoffman P, Bradley JD, Newman AJ, Feldman MJ, Minichiello K, Miao J, Mack PC, Papadimitrakopoulou VA, Herbst RS, Kelly K, Gandara DR.
    Journal: J Thorac Oncol; 2019 Oct; 14(10):1847-1852. PubMed ID: 31195180.
    Abstract:
    BACKGROUND: S1400D is a biomarker-driven therapeutic substudy of Lung-MAP evaluating the fibroblast growth factor (FGF) receptor (FGFR) inhibitor AZD4547 in patients with FGF pathway-activated squamous cell. This is the first phase II trial to evaluate AZD4547 as a targeted approach in patients with previously treated FGFR-altered squamous cell NSCLC and is the first demonstration of successful implementation and conduct of a national umbrella protocol in this disease setting. METHODS: Eligible patients had tumoral FGFR alteration or mutation and had progressive disease after at least one line of platinum-based systemic therapy. Patients received AZD4547 80 mg twice daily orally. Primary endpoint was response by Response Evaluation Criteria in Solid Tumors version 1.1; secondary endpoints included progression-free survival, overall survival, and duration of response (DoR). RESULTS: Ninety-two patients were assigned to S1400D, 43 were enrolled, and 27 AZD4547-treated patients were evaluable. Evaluable patients were predominantly white (n = 24, 89%), median age 66 years (range, 49-88 years old), and female (n = 7, 26%). FGFR alterations included FGFR1 amplification (n = 23; 85%), FGFR3 amplification (n = 2; 7%), FGFR3 S249C (n = 2; 7%), and FGFR3 fusion (n = 1; 4%). Treatment with ADZ4547 was well tolerated; grade 3 adverse events occurred in six patients, and one patient had grade 4 sepsis. Of 27 response-evaluable patients, 1 patient with FGFR3 S249C had unconfirmed partial response with a DoR of 1.5 months and 1 patient with FGFR1 amplification had a confirmed partial response with a DoR of 2.9 months (7%, 95% confidence interval [CI]: 0%-17%). Median progression-free survival and overall survival for the AZD4547-treated cohort were 2.7 months (95% CI: 1.4- 4.5 months) and 7.5 months (95% CI: 3.7-9.3 months). CONCLUSIONS: AZD4547 had an acceptable safety profile but minimal activity in this predominantly FGFR1/FGFR3-amplified cohort. Evaluation of other targeted agents in Lung-MAP is ongoing.
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