Abstract 223TiP
Background
Locally advanced or metastatic urothelial carcinoma (la/mUC) is an aggressive cancer with low survival rates. Anti-PD-(L)1 antibodies are current treatment options for patients who progressed during or after platinum-based chemotherapy. While some of these patients achieve durable responses with anti-PD-(L)1 therapy, response rates are ≤21%; as such, novel therapies are needed for patients after treatment with platinum and anti-PD-(L)1 therapies. Enfortumab vedotin (EV) is an investigational humanized monoclonal antibody that delivers the microtubule-disrupting agent monomethyl auristatin E to tumors expressing Nectin-4, which is highly expressed in la/mUC. In a multicohort phase 2 study of EV (EV-201; NCT03219333), which included sites in Japan and Korea, single-agent EV 1.25 mg/kg was generally well tolerated. In Cohort 1 of EV-201 (closed to enrollment), EV demonstrated a confirmed ORR of 44% and a median DoR of 7.6 months as assessed by independent central review in patients with la/mUC with prior platinum chemotherapy and antiPD(L)1.
Trial design
EV-301 (NCT03474107) is a global, multicenter, open-label, phase 3 trial being conducted in the USA, Europe, and Asia, including sites in Japan, Korea, and Taiwan. Adult patients with la/mUC and an ECOG score ≤1, who have received a prior platinum-containing chemotherapy, and have experienced disease progression during or following treatment with anti-PD-(L)1 are eligible; these patients are consistent with the population in Cohort 1 of EV-201. Approximately 550 patients will be randomized (1:1) to receive EV (1.25 mg/kg) by IV on Days 1, 8, and 15 of each 28-day cycle (Arm A), or investigator’s choice of IV docetaxel, paclitaxel, or vinflunine (where approved) on Day 1 of each 21day cycle (Arm B). Treatment with EV will continue until radiological disease progression, intolerance, or other discontinuation criterion is met. Radiological assessments of tumor response status will be performed at baseline and every 8 weeks. The primary endpoint is overall survival; secondary endpoints include PFS, DoR, ORR, and assessment of safety/tolerability and quality-of-life parameters.
Clinical trial identification
NCT03474107.
Legal entity responsible for the study
Astellas Pharma US, Inc.
Funding
Astellas Pharma US, Inc.
Disclosure
D.P. Petrylak: Research grant / Funding (institution): Astellas ; Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca; Advisory / Consultancy, Research grant / Funding (institution): Bayer; Advisory / Consultancy, Research grant / Funding (institution), Shareholder / Stockholder / Stock options: Bellicum; Advisory / Consultancy, Research grant / Funding (institution): Dendreon; Advisory / Consultancy: Exelixis; Advisory / Consultancy: Ferring; Advisory / Consultancy, Research grant / Funding (institution): Johnson and Johnson; Advisory / Consultancy, Research grant / Funding (institution): Lilly; Advisory / Consultancy, Research grant / Funding (institution): Medivation; Advisory / Consultancy, Research grant / Funding (institution): Millineum; Advisory / Consultancy, Research grant / Funding (institution): Pfizer; Advisory / Consultancy, Research grant / Funding (institution): Roche Laboratories; Advisory / Consultancy, Research grant / Funding (institution): Sanofi Aventis; Research grant / Funding (institution): Agensys; Research grant / Funding (institution): Clovis; Shareholder / Stockholder / Stock options: Tyme; Research grant / Funding (institution): Eli Lilly; Research grant / Funding (institution): Endocyte; Research grant / Funding (institution): Genentech; Research grant / Funding (institution): Innocrin. J.E. Rosenberg: Advisory / Consultancy, Research grant / Funding (institution): Astellas; Advisory / Consultancy, Research grant / Funding (institution): Roche; Advisory / Consultancy, Research grant / Funding (institution): Seattle Genetics; Advisory / Consultancy: Merck; Advisory / Consultancy: BMS; Advisory / Consultancy, Research grant / Funding (institution): AstraZeneca; Travel / Accommodation / Expenses: Bayer; Advisory / Consultancy: Lilly; Advisory / Consultancy: Sanofi; Advisory / Consultancy: EMD Serono. J. Lee: Advisory / Consultancy, Research grant / Funding (institution): Pfizer Korea; Advisory / Consultancy, Research grant / Funding (institution): Ipsen Korea; Advisory / Consultancy: Janssen; Advisory / Consultancy: Sanofi Aventis; Advisory / Consultancy: Novartis Korea; Advisory / Consultancy: Astellas Korea; Advisory / Consultancy: BMS Korea. I. Duran: Advisory / Consultancy: Seattle Genetics. Y. Loriot: Advisory / Consultancy: Astellas; Advisory / Consultancy: Seattle Genetics; Advisory / Consultancy, Research grant / Funding (institution): Janssen; Advisory / Consultancy, Research grant / Funding (institution): Sanofi; Advisory / Consultancy, Research grant / Funding (institution): MSD; Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: Roche. G. Sonpavde: Research grant / Funding (institution): Boehringer Ingelheim; Research grant / Funding (institution): Bayer; Research grant / Funding (institution): Onyx-Amgen; Advisory / Consultancy, Research grant / Funding (institution): Pfizer; Advisory / Consultancy: Genentech; Advisory / Consultancy: Novartis; Advisory / Consultancy: Argos; Advisory / Consultancy, Research grant / Funding (institution): Merck; Advisory / Consultancy: Sanofi; Advisory / Consultancy: Agensys; Advisory / Consultancy: Astellas; Speaker Bureau / Expert testimony: Clinical Care Options; Advisory / Consultancy: AstraZeneca; Advisory / Consultancy: Uptodate; Advisory / Consultancy: Biotheranostics; Advisory / Consultancy: Exelixis; Advisory / Consultancy: Bristol-Myers-Squibb; Advisory / Consultancy: Janssen; Advisory / Consultancy: Amgen; Advisory / Consultancy: Eisai; Advisory / Consultancy: NCCN. C. Wu: Full / Part-time employment: Astellas. E.M. Gartner: Full / Part-time employment: Seattle Genetics, Inc. A. Melhem-Bertrandt: Full / Part-time employment: Astellas. T. Powles: Honoraria (self), Research grant / Funding (institution): AstraZeneca; Honoraria (self), Research grant / Funding (institution): Roche; Honoraria (self): Pfizer; Honoraria (self): Novartis; Honoraria (self): Merck; Honoraria (self): BMS. All other authors have declared no conflicts of interest.
Resources from the same session
154P - Genetic characteristics of participants in the Australian Pancreatic Screening Study
Presenter: Krithika Murali
Session: Poster display session
Resources:
Abstract
155P - Mean Platelet Volume (MPV) is it a new prognostic marker in resectable carcinoma stomach?
Presenter: Girish M. S
Session: Poster display session
Resources:
Abstract
156P - A positive feedback between IDO1 metabolite and COL12A1 via MAPK pathway to promote gastric cancer metastasis
Presenter: Zhen Xiang
Session: Poster display session
Resources:
Abstract
157P - Lymph node ratio (LNR) a better prognostic factor after D2 gastrectomy
Presenter: Jitin Yadav
Session: Poster display session
Resources:
Abstract
158P - A clinical significance of preoperative C-reactive protein/albumin ratio in patients with extrahepatic bile duct cancer
Presenter: Kim Jinkook
Session: Poster display session
Resources:
Abstract
159P - The relation between obesity and cancer of gastrointestinal tract in Korea: The data from Statistic Korea between 2001 and 2016
Presenter: Hee Man Kim
Session: Poster display session
Resources:
Abstract
160P - Clinical outcomes of second-line chemotherapy after progression on nab-paclitaxel plus gemcitabine in patients with metastatic pancreatic adenocarcinoma
Presenter: Jooyoung Ha
Session: Poster display session
Resources:
Abstract
161P - Chitinase 3-Like 1 gene (T/C) polymorphism and serum YKL-40 in hepatocellular carcinoma
Presenter: Alshimaa Alhanafy
Session: Poster display session
Resources:
Abstract
162P - Hypofractionated radiotherapy for pulmonary metastases from hepatocellular carcinoma: Treatment response and prognostic factors affecting survival
Presenter: In Young Jo
Session: Poster display session
Resources:
Abstract
163P - Excision repair cross-complementation group 1 and 2 (ERCC1/2) Single nucleotide polymorphisms and chemotherapy treatment outcome in Cholangiocarcinoma
Presenter: Thanachai Sanlung
Session: Poster display session
Resources:
Abstract