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Analysis of Patients With Prior Gastrectomy Treated With LONSURF® (trifluridine/tipiracil) Published in JAMA Oncology

Servier and its partner Taiho Oncology, Inc. (US), a subsidiary of Taiho Pharmaceutical Co., Ltd. (Japan), announced today that detailed results from the analysis of patients with prior gastrectomy enrolled in the Phase III TA S-102 G astric S tudy (TAGS) evaluating LONSURF® (trifluridine/tipiracil) in adult patients with metastatic gastric or gastroesophageal junction adenocarcinoma previously treated with at least two prior lines of chemotherapy that included a fluoropyrimidine, platinum, and either a taxane and/or irinotecan-containing regimen, and if appropriate, HER2/neu-targeted therapy, were published in the October issue of JAMA Oncology . 1

In the preplanned subgroup analysis, 221 of 507 patients with mGC or GEJ adenocarcinoma with prior gastrectomy were enrolled and randomized to receive LONSURF (n=147) or placebo (n=74) on days 1-5 and 8-12 of each 28-day treatment cycle. Results showed that treatment with LONSURF was tolerable and prolonged survival versus placebo by 6 months vs 3.4 months [95% CI, 0.57 (0.41-0.79)]. Further, the overall safety profile of the drug, including the incidence of severe AEs in this heavily pretreated patient population, was similar in patients with or without gastrectomy.

“For patients with metastatic gastric cancer and gastroesophageal junction adenocarcinoma, nearly half will undergo a gastrectomy and often these patients are likely to have more complications compared to those who do not have one. Therefore this data is critical in demonstrating the safety and efficacy for a large sub-population of patients, who in Europe, may have limited treatment options,” said Professor Josep Tabernero, Head of the Medical Oncology Department, Vall d’Hebron University Hospital, Barcelona and Director of the Vall d’Hebron Institute of Oncology (VHIO).

“Patients with metastatic gastric cancer, including gastroesophageal junction adenocarcinoma, have a high unmet medical need when the current standard of care no longer works. We are pleased with the results from this subgroup analysis that strongly suggest the same efficacy and tolerability for LONSURF in this group of patients regardless of previous gastrectomy,” said Patrick Therasse, MD, PhD, Head of Servier Research and Development Oncology.

Data from the subgroup analysis were previously announced at an oral presentation during the 2019 American Society of Clinical Oncology Gastrointestinal Cancers Symposium (ASCO-GI) in San Francisco, US.

In the EU LONSURF is indicated as monotherapy for the treatment of adult patients with metastatic colorectal cancer who have been previously treated with, or are not considered candidates for, available therapies including fluoropyrimidine-, oxaliplatin- and irinotecan-based chemotherapies, anti-VEGF agents, and anti-EGFR agents. It has recently been accepted by the European Commission as monotherapy for the treatment of adult patients with metastatic gastric cancer including adenocarcinoma of the gastroesophageal junction, who have been previously treated with at least two prior systemic treatment regimens for advanced disease.

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About TAGS

TAGS (TA S-102 G astric S tudy) is a Taiho-sponsored, global, randomized, double-blind, placebo controlled, Phase III study evaluating the efficacy and safety of LONSURF in 507 adult patients with previously treated mGC or mGEJ adenocarcinoma. The primary endpoint was OS, and key secondary endpoints included PFS, safety and tolerability, as well as quality of life. LONSURF demonstrated statistically significant improvements in OS and PFS compared with placebo. The median OS improved from 3.6 months with placebo to 5.7 months with LONSURF, HR 0.69 (95% confidence interval [CI], 0·56-0·85; P=0.00058).

For more information on TAGS, please visit www.ClinicalTrials.gov ( https://clinicaltrials.gov/ct2/show/NCT02500043 ). The ClinicalTrials.gov Identifier is NCT02500043.

About Metastatic Gastric Cancer

Gastric cancer, also known as stomach cancer, is a disease in which malignant cells form in the lining of the stomach. It is the fifth most common cancer worldwide and the third most common cause of cancer-related death (after lung and colorectal cancer), with an estimated 780,000 deaths annually.2 

When cancer spreads it is called advanced cancer. Locally advanced cancer is when the cancer has grown outside the organ it started in but hasn’t spread to other parts of the body. When the cancer spreads to other parts of the body, this is called metastatic cancer. In the last two decades, the proportion of patients with gastric cancer who present with metastases has risen to over 40%.3

Standard chemotherapy regimens for advanced gastric cancer include fluoropyrimidines, platinum derivatives, and taxanes (with ramucirumab), or irinotecan. The addition of trastuzumab to chemotherapy is standard of care for patients with HER2/neu-positive advanced gastric cancer. However, after failure of first- and second-line therapies, there are neither approved nor standard third-line treatments in the EU.

About LONSURF4

LONSURF consists of a thymidine-based nucleoside analog, trifluridine, and the thymidine phosphorylase (TP) inhibitor, tipiracil, which increases trifluridine exposure by inhibiting its metabolism by TP. Trifluridine is incorporated into DNA, resulting in DNA dysfunction and inhibition of cell proliferation.

In the EU, LONSURF is indicated in monotherapy for the treatment of adult patients with metastatic colorectal cancer (CRC) who have been previously treated with, or are not considered candidates for, available therapies including fluoropyrimidine-, oxaliplatin- and irinotecan-based chemotherapies, anti-VEGF agents, and anti-EGFR agents. As of October 2019, LONSURF is approved as a treatment for advanced mCRC in 74 countries and regions. LONSURF was approved as a treatment for mGC/mGEJC in the United States in February 2019, in Japan in August 2019 and in the EU in September 2019.

LONSURF was discovered and developed by Taiho Pharmaceutical. In June 2015, Taiho Pharmaceutical and Servier entered into an exclusive license agreement for the co-development and commercialization of LONSURF in Europe and other countries outside of the United States, Canada, Mexico and Asia.

About Servier

Servier is an international pharmaceutical company governed by a non-profit foundation, with its headquarters in France (Suresnes). With a strong international presence in 149 countries and a turnover of 4.2 billion euros in 2018, Servier employs 22,000 people worldwide. Entirely independent, the Group reinvests 25% of its turnover (excluding generics) in research and development and uses all its profits for development. Corporate growth is driven by Servier’s constant search for innovation in five areas of excellence: cardiovascular, immune-inflammatory and neurodegenerative diseases, cancer and diabetes, as well as by its activities in high-quality generic drugs. Servier also offers eHealth solutions beyond drug development.

Becoming a key player in oncology is part of Servier’s long-term strategy. Currently, there are twelve molecular entities in clinical development in this area, targeting gastrointestinal and lung cancers and other solid tumors, as well as different types of leukemia and lymphomas. This portfolio of innovative cancer treatments is being developed with partners worldwide, and covers different cancer hallmarks and modalities, including cytotoxics, proapoptotics and immune targeted therapies, to deliver life-changing medicines to patients.

More information: www.servier.com

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About Taiho Oncology, Inc. (U.S.)

Taiho Oncology, Inc., a subsidiary of Taiho Pharmaceutical Co., Ltd. and Otsuka Holdings Co., Ltd., has established a world class clinical development organization that works urgently to develop innovative cancer treatments and has built a commercial business in the US Taiho has an oral oncology pipeline consisting of both novel antimetabolic agents and selectively targeted agents. Advanced technology, dedicated researchers, and state of the art facilities are helping us to define the way the world treats cancer. It’s our work; it’s our passion; it’s our legacy.

For more information about Taiho Oncology, please visit: https://www.taihooncology.com/us/ .

For more information about Taiho Pharmaceutical Co., Ltd., please visit: https://www.taiho.co.jp/en/ .

For more information about Otsuka Holdings Co., Ltd., please visit: https://www.otsuka.com/en/ .

1. Ilson D, Tabernero J, Prokharau A, et al. Efficacy and Safety of Trifluridine/Tipiracil Treatment in Patients With Metastatic Gastric Cancer Who Had Undergone Gastrectomy. Subgroup Analyses of a Randomized Clinical Trial. JAMA Onc . 2019. doi:10.1001/jamaoncol.2019.3531. Last accessed October 2019.

2. World Health Organization. Globocan (2018), gastric cancer. Available at: https://gco.iarc.fr/today/data/factsheets/cancers/7-Stomach-fact-sheet.pdf . Last accessed October 2019.

3. Bernards N, Creemers GJ, Nieuwenhuijzen GA, et al. No improvement in median survival for patients with metastatic gastric cancer despite increased use of chemotherapy. Ann Oncol. 2013;24:3056–60.

4. European Medicines Agency. LONSURF summary of product characteristics. Available at: https://www.ema.europa.eu/en/documents/product-information/lonsurf-epar-product-information_en.pdf . Last accessed October 2019.

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