Background-Fibroblast growth factor receptor (FGFR) 2 gene alterations are involved in the pathogenesis of cholangiocarcinoma. Pemigatinib is a selective, potent, oral inhibitor of FGFR1, 2, and 3. This study evaluated the safety and antitumour activity of pemigatinib in patients with previously treated, locally advanced or metastatic cholangiocarcinoma with and without FGFR2 fusions or rearrangements.Methods-In this multicentre, open-label, single-arm, multicohort, phase 2 study (FIGHT-202), patients aged 18 years or older with disease progression following at least one previous treatment and an Eastern Cooperative Oncology Group (ECOG) performance status of 0-2 recruited from 146 academic or community-based sitesin the USA, Europe, the Middle East, and Asia were assigned to one of three cohorts: patients with FGFR2 fusions or rearrangements, patients with other FGF/FGFR alterations, or patients with no FGF/FGFR alterations. All enrolled patients received a starting dose of 13•5 mg oral pemigatinib once daily (21-day cycle; 2 weeks on, 1 week off) until disease progression, unacceptable toxicity, withdrawal of consent, or physician decision. The primary endpoint was the proportion of patients who achieved an objective response among those with FGFR2 fusions or rearrangements, assessed centrally in all patients who received at least one dose of pemigatinib. This study is registered with ClinicalTrials.gov, NCT02924376, and enrolment is completed. Jan 17, 2017, and March 22, 2019, 146 patients were enrolled: 107 with FGFR2 fusions or rearrangements, 20 with other FGF/FGFR alterations, 18 with no FGF/ FGFR alterations, and one with an undetermined FGF/FGFR alteration. The median follow-up was 17•8 months ) patients with FGFR2 Abou-Alfa et al. Findings-Between

I.M. Silverman has employment with and owns stocks from Incyte Corporation. A. Hollebecque is a paid consultant for Debiopharm and Incyte Corporation. L. Friboulet received research funding from Debiopharm. S. Owens has employment with and owns stocks from Incyte Corporation. R.C. Newton had employment with Incyte Corporation at the time of this work and owns stock from Incyte Corporation. H. Zhen has employment with and owns stocks from Incyte Corporation. L. Féliz has employment with and owns stocks from Incyte Corporation. C. Zecchetto declares no potential conflicts of interest. D. Melisi received research funding from Celgene, Evotec, Incyte Corporation, and Shire; and had a consulting role at Baxter, Eli Lilly, Evotec, iOnctura, and Shire, which was unrelated to the present work. T.C. Burn has employment with and owns stocks from Incyte Corporation. Research.

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FGFR2 rearrangements resulting in dysregulated signaling are drivers of cholangiocarcinoma (CCA) tumorigenesis, and occur almost exclusively in intrahepatic CCA. Pemigatinib, a selective, potent, oral inhibitor of FGFR1–3, has demonstrated efficacy and safety in a Phase II study of patients with previously treated locally advanced/metastatic CCA harboring FGFR2 fusions/rearrangements. We describe the study design of FIGHT-302, an open-label, randomized, active-controlled, multicenter, global, Phase III study comparing the efficacy and safety of first-line pemigatinib versus gemcitabine plus cisplatin in patients with advanced CCA with FGFR2 rearrangements (NCT03656536). The primary end point is progression-free survival; secondary end points are objective response rate, overall survival, duration of response, disease control rate, safety and quality of life. Clinical Trial Registration: NCT03656536 ( ClinicalTrials.gov )

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