On October 21, 2018 Leap Therapeutics, Inc. (NASDAQ: LPTX) reported its clinical data from its ongoing Phase I/II study of DKN-01 in combination with Keytruda (pembrolizumab) in patients with advanced esophagogastric cancer at the European Society for Molecular Oncology (ESMO) (Free ESMO Whitepaper) 2018 Annual Congress (Press release, Leap Therapeutics, OCT 21, 2018, View Source [SID1234530017]).

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Leap will host a live conference call and webcast on Monday, October 22 at 8:00 AM US Eastern Time / 2:00 PM Central European Time, with Samuel Klempner, MD, Director, Precision Medicine Program, The Angeles Clinic and Research Institute, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center. Dr. Klempner will describe his experience with patients in the study.

Clinical Data Presented at ESMO (Free ESMO Whitepaper)

Midway through the study, the combination of DKN-01 and pembrolizumab has demonstrated promising clinical activity with a 23.5% overall response rate and 58.8% disease control rate in evaluable gastric or gastroesophageal junction cancer patients who have been heavily pretreated and have not had prior anti-PD-1/PD-L1 therapy (PD-1/PD-L1 naïve). The combination has generated durable responses in subgroups less likely to respond to pembrolizumab monotherapy, for example, patients whose tumors are microsatellite stable (MSS) and/or PD-L1 negative. The combination of DKN-01 and pembrolizumab may have additive clinical benefit through the targeting of both innate and adaptive immunity. Data to date suggest that elevated tumor expression of DKK1 may correlate with better patient outcomes. Biomarker analyses are underway to guide future clinical development in gastroesophageal malignancies.

Esophagogastric Cancer Clinical Trial (P102)

The esophagogastric cancer clinical trial (P102) is a multipart study of DKN-01 as a monotherapy and in combination with paclitaxel or pembrolizumab. The arm evaluating DKN- 01 plus pembrolizumab includes both dose escalation and dose confirmation cohorts and is designed to assess the safety, pharmacokinetics and efficacy of the combination. Data from the monotherapy and paclitaxel arms of the study have been presented previously and will be updated later in the year.

As of the September 26, 2018 cut-off date for the presentation, forty-five patients have been enrolled in the DKN-01 plus pembrolizumab study, thirty-eight PD-1/PD-L1 naïve and seven refractory to PD-1/PD-L1 therapy. Two of the patients were enrolled in the 150mg DKN-01 dose, and forty-three patients at the 300mg DKN-01 dose. Leap expects that the PD-1/PD-L1 naïve group will complete enrollment before the end of 2018.

DKN-01 plus Keytruda
Clinical Results as of September 26, 2018

300mg DKN-01
Anti-PD1/PD-L1 Naïve

Patients

Response Rate

Disease
Control
Rate

Partial Response

Stable Disease

Progressive Disease

All responding patients in the study had MSS tumors. The overall response rate for Keytruda monotherapy in gastric or gastroesophageal junction patients with non-microsatellite instability high tumors in the KN-059 (n = 167) and KN-061 (n = 281) studies was 9.0% and 9.3%, respectively.

When this study is complete, Leap expects to choose an indication for a larger, controlled clinical study.

DKN-01 Clinical Perspectives Conference Call and Webcast:

On Monday, October 22, 2018 at 8:00AM ET/2:00PM CET, Leap will be hosting a conference call and webcast for the investment community. To access the conference call, please dial (866) 589-0108 (US/Canada Toll-Free) or (409) 231-2048 (international) and refer to conference ID 1249999. The presentation will also be webcast live and will be available under "Events & Presentations" in the Investor section of Leap’s website, View Source A replay of the webcast will be available on Leap’s website approximately two hours after the event and will be available for a limited time.

On October 21, 2018 Daiichi Sankyo Company, Limited (hereafter, Daiichi Sankyo) reported that updated phase 1 safety and efficacy data for [fam-] trastuzumab deruxtecan, an investigational HER2 targeting antibody drug conjugate (ADC), were presented for a subgroup of patients with heavily pretreated HER2 expressing colorectal cancer at the 2018 European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) Congress in Munich, Germany (Press release, Daiichi Sankyo, OCT 21, 2018, https://www.prnewswire.com/news-releases/daiichi-sankyo-presents-updated-results-of-fam–trastuzumab-deruxtecan-ds-8201-in-patients-with-her2-expressing-advanced-colorectal-cancer-at-2018-european-society-for-medical-oncology-esmo-congress-300734400.html [SID1234530016]).

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An updated subgroup analysis in 19 evaluable patients with heavily pretreated HER2 expressing (defined as IHC ≥1+ or amplified) colorectal cancer receiving a recommended expansion dose of 6.4 mg/kg showed that [fam-] trastuzumab deruxtecan demonstrated a confirmed overall response rate of 15.8 percent (3 of 19 patients) and a disease control rate of 84.2 percent (16 of 19 patients). Median duration of response has not been reached and median progression-free survival was 3.9 months (95 percent CI: 2.1, 8.3) for this subgroup of patients. These patients had tumors with varying degrees of HER2 expression based on central IHC assessment of archival tissue, including six patients with HER2 IHC of zero (0). Tumor shrinkage primarily was observed in tumors with higher levels of HER2 IHC.

"We are encouraged by these preliminary results with [fam-] trastuzumab deruxtecan, particularly given the unmet medical need for patients with HER2 expressing colorectal cancer that has progressed on one or more prior therapies," said Takayuki Yoshino, MD, PhD, Director of Gastroenterology and Gastrointestinal Oncology at National Cancer Center Hospital East, Kashiwa, Japan, a study investigator. "These initial findings support further evaluation of [fam-] trastuzumab deruxtecan in this specific type of colorectal cancer."

"There are no therapies specifically approved for patients with HER2 expressing colorectal cancer, and continued study of [fam-] trastuzumab deruxtecan will provide a better understanding of the potential role of a HER2 targeting antibody drug conjugate in these patients," said Gilles Gallant, BPharm, PhD, Vice President, DS-8201 Global Team Leader, Oncology Research and Development, Daiichi Sankyo. "Patient enrollment is underway into our global phase 2 study evaluating safety and efficacy of [fam-] trastuzumab deruxtecan in patients with HER2 expressing advanced colorectal cancer."

Updated overall safety data as of August 10, 2018 across all subgroups of the ongoing phase 1 study with [fam-] trastuzumab deruxtecan in various HER2 expressing cancers were also reported at ESMO (Free ESMO Whitepaper). Among 259 patients who received at least one dose of [fam-] trastuzumab deruxtecan 5.4 or 6.4 mg/kg in Part 1 or Part 2 of the study (regardless of tumor type), the most common adverse events (≥30 percent, any Grade) included nausea (74.1 percent), decreased appetite (56.8 percent;) vomiting (43.6 percent), anemia (37.8 percent), alopecia (37.5 percent), fatigue (34.0 percent), diarrhea (33.6 percent) and constipation (32.8 percent). A total of 54.1 percent of patients experienced a ≥ Grade 3 adverse event and 22.8 percent had a serious adverse event, including 4.6 percent of patients who experienced an adverse event that led to death. As previously presented, five cases of Grade 5 interstitial lung disease (ILD)/pneumonitis were reported by the investigators for the overall population of the phase 1 study, none of which was observed in patients with colorectal cancer. Any reported cases of ILD/pneumonitis in the [fam-] trastuzumab deruxtecan clinical development program are evaluated by an independent adjudication committee.

Unmet Need in Colorectal Cancer
Colorectal cancer is the third most common cancer worldwide. In 2012, there were approximately 1.36 million new cases diagnosed and 690,000 deaths worldwide.1 Approximately 25 percent of patients have metastatic disease at diagnosis, meaning the disease has spread to distant organs, and about 50 percent of patients with colorectal cancer will eventually develop metastases.2 Prognosis for these patients remains poor.3

An increase in the number of approved targeted therapies for advanced colorectal cancer over the past decade has helped improve outcomes for some patients, however efficacy and tolerability of second and third-line treatments remain limited.4,5,6,7,8 Approximately 3 percent of colorectal cancers overexpress the HER2 protein, which is a well-established therapeutic target in breast and gastric cancer.4 In addition, research indicates that HER2 amplification may be associated with resistance to anti-epidermal growth factor receptor (EGFR)-targeted therapy and shorter survival.9,10 Currently, no approved HER2 targeting therapies exist for patients with colorectal cancer.

About the [Fam-] Trastuzumab Deruxtecan Phase 1 Study
An open-label, two-part phase 1 study is currently evaluating [fam-] trastuzumab deruxtecan in patients with advanced/unresectable or metastatic solid tumors that are refractory or intolerant to standard treatment, or for whom no standard treatment is available. The primary objective of the dose escalation phase of this study was to assess the safety and tolerability of [fam-] trastuzumab deruxtecan and determine the maximum tolerated dose. Data from this part of the study were published in the Lancet Oncology.11

In the dose expansion part of the phase 1 study, [fam-] trastuzumab deruxtecan is given in one of two doses (5.4 mg/kg and 6.4 mg/kg) to patients with HER2 positive advanced or metastatic breast cancer and gastric cancer, HER2 low expressing breast cancer and other HER2 expressing solid tumors including colorectal cancer. Overall, 292 patients have been enrolled into this phase 1 study of [fam-] trastuzumab deruxtecan. For more information about the study, visit ClinicalTrials.gov.

About [Fam-] Trastuzumab Deruxtecan
[Fam-] trastuzumab deruxtecan (DS-8201; [fam-] trastuzumab deruxtecan in U.S. only; trastuzumab deruxtecan in other regions of world) is the lead product in the investigational ADC Franchise of the Daiichi Sankyo Cancer Enterprise. ADCs are targeted cancer medicines that deliver cytotoxic chemotherapy ("payload") to cancer cells via a linker attached to a monoclonal antibody that binds to a specific target expressed on cancer cells. Designed using Daiichi Sankyo’s proprietary ADC technology, [fam-] trastuzumab deruxtecan is comprised of a humanized HER2 antibody attached to a novel topoisomerase I inhibitor payload by a tetrapeptide-based linker. It is designed to target and deliver chemotherapy inside cancer cells and reduce systemic exposure to the cytotoxic payload (or chemotherapy) compared to the way chemotherapy is commonly delivered.

A broad and comprehensive development program with [fam-] trastuzumab deruxtecan is underway in North America, Europe and Asia. [Fam-] trastuzumab deruxtecan is in phase 3 development versus ado-trastuzumab emtansine (T-DM1) (DESTINY-Breast03) and versus investigator’s choice post T-DM1 (DESTINY-Breast02) for HER2 positive metastatic breast cancer; pivotal phase 2 clinical development for HER2 positive metastatic breast cancer resistant or refractory to T-DM1 (DESTINY-Breast01); pivotal phase 2 development for HER2 positive advanced gastric cancer resistant or refractory to trastuzumab (DESTINY-Gastric01); phase 2 development for HER2 expressing advanced colorectal cancer; phase 2 development for metastatic non-squamous HER2 overexpressing or HER2 mutated NSCLC; and, phase 1 development in combination with nivolumab for HER2 expressing metastatic breast and bladder cancer.

[Fam-] trastuzumab deruxtecan has been granted Breakthrough Therapy designation for the treatment of patients with HER2 positive, locally advanced or metastatic breast cancer who have been treated with trastuzumab and pertuzumab and have disease progression after T-DM1, and Fast Track designation for the treatment of HER2 positive unresectable and/or metastatic breast cancer in patients who have progressed after prior treatment with HER2 targeted therapies including T-DM1 by the U.S. Food and Drug Administration (FDA). [Fam-] trastuzumab deruxtecan has received SAKIGAKE Designation for the treatment of HER2 positive advanced gastric or gastroesophageal junction cancer by the Japan Ministry of Health, Labour and Welfare (MHLW).

[Fam-] trastuzumab deruxtecan is an investigational agent that has not been approved for any indication in any country. Safety and efficacy have not been established.

On October 21, 2018 Ipsen Biopharmaceuticals, an affiliate of Ipsen (Euronext: IPN; ADR: IPSEY), reported results from a retrospective, observational analysis examining the real-world dosing patterns of patients with metastatic pancreatic cancer (mPC) treated with ONIVYDE (irinotecan liposome injection), at this year’s European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) annual congress taking place in Munich, Germany, Oct. 19-23, 2018 (Press release, Ipsen, OCT 21, 2018, View Source [SID1234530015]).

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Using the Flatiron Health electronic health record (EHR)-derived database, a longitudinal and nationally representative database comprising patient-level structured and unstructured data that is curated via technology-enabled abstraction, researchers identified 257 metastatic pancreatic cancer patients (median age: 67y; IQR: 61–74) who received ONIVYDE + fluorouracil (5-FU) and leucovorin (LV) therapy between November 2015 to August 2017 and analyzed their treatment data to assess dose intensity (DI) over the first 6 weeks of treatment, dose modifications during treatment, and overall duration of exposure (DOE) to ONIVYDE.

The real-world analysis (Poster 735P) describes how ONIVYDE was incorporated in the treatment sequencing that contained prior gemcitabine in the treatment of metastatic pancreatic cancer. In this analysis, the mean dose intensity was 177.8 mg/m2 (SD: 74.9 mg/m2). The median dose at initiation was 69.4 mg/m2 (IQR: 56.7–70.2); the recommended dose for ONIVYDE is 70 mg/m2. In addition, median duration of exposure was 8.9 weeks (IQR: 3.9/19 weeks) in first and second line and 6.3 weeks (IQR: 3.4/12.1 weeks) in third or plus lines.

These results are generally consistent with the NAPOLI-1 trial, however, dose modifications in the real-world analysis were lower (27.2% vs 45% in NAPOLI-1). In the NAPOLI-1 phase 3 trial, dose intensity over 6 weeks and duration of exposure for combination therapy with ONIVYDE was 167.5 mg/m2 (SD 44.8) and 8.7 weeks (IQR: 5.4 – 22.0), respectively. Despite these real-world patients being older, having worse performance status and more prior lines of treatment than patients in NAPOLI-1, more than half (59.1%) of patients started ONIVYDE + 5-FU/LV treatment with the recommended ONIVYDE dose (70 mg/m2).

NAPOLI-1 is the largest global, phase 3, randomized, open-label, multicenter trial in patients (N=417) with metastatic pancreatic cancer whose disease had progressed following gemcitabine-based therapy. Patients in the NAPOLI-1 trial being treated with ONIVYDE in combination with fluorouracil (5-FU) and leucovorin (LV) had improved overall survival (OS; primary endpoint) vs 5-FU/LV (6.1 mos vs 4.2 mos; HR = 0.67, 95% CI 0.49–0.92; P = 0.012). ONIVYDE monotherapy had no effect on OS.

ONIVYDE can cause severe, life-threatening neutropenia and diarrhea (see complete Boxed Warning in full prescribing information). ONIVYDE can also cause severe and fatal Interstitial Lung Disease (ILD) and hypersensitivity reactions. These serious adverse events may require withholding or discontinuing treatment with ONIVYDE, a dose reduction and/or supportive treatment. The most common adverse reactions in NAPOLI-1 (≥20%) were diarrhea (59%), fatigue/asthenia (56%), vomiting (52%), nausea (51%), decreased appetite (44%), stomatitis (32%), and pyrexia (23%).

"Patients are at the heart of what we do, with unmet need guiding our development strategy and driving how we innovate for patient care," said Dr. Sotirios Stergiopoulos, Senior Vice President, Head of Global Medical Affairs and Chief Medical Officer. "This real-world data analysis provides further evidence in support of the dose intensity and duration of exposure of ONIVYDE and 5-FU/LV observed in the NAPOLI-1 phase 3 trial. This retrospective analysis allows us to further understand how patients with pancreatic cancer are receiving and managing their treatment in real-world settings."

Dr. Afsaneh Barzi, Study Investigator, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, Calif., notes, "As a physician who treats patients with metastatic pancreatic cancer, I find it reassuring and welcome the unique evidence the Flatiron dosing analysis provides in demonstrating the real-world usage of ONIVYDE + 5-FU/LV in a large sample of metastatic pancreatic cancer patients being treated in a clinical oncology setting when compared to a clinical trial setting. Data from our real-world practice for clinical analysis serve to further our knowledge about how to continue to effectively treat our patients."

About Pancreatic Cancer

Pancreatic cancer is a rare and deadly disease with about 55,440 people (29,200 men and 26,240 women) being diagnosed with pancreatic cancer in the United States alone.1 More than half are diagnosed with metastatic disease, which has an overall 5-year survival rate of less than three percent (3%)1, and often rapidly progresses during or shortly after receiving chemotherapy.2 Pancreatic cancer accounts for about 3% of all cancers, and is the third leading cause of cancer-related death in the United States, surpassing breast cancer.1 It is expected to become the second leading cause of cancer-related death in the U.S. by the year 2030, surpassing colorectal cancer.1,3

About ONIVYDE

ONIVYDE is an encapsulated formulation of irinotecan. This long-circulating liposomal form is designed to increase length of tumor exposure to both irinotecan and its active metabolite, SN38. ONIVYDE is approved by the U.S. FDA, EMA and many other countries. In the U.S., ONIVYDE is approved for use in combination with fluorouracil (5-FU) and leucovorin (LV) for the treatment of patients with metastatic adenocarcinoma of the pancreas after disease progression following gemcitabine-based therapy. ONIVYDE is not indicated as a single agent for the treatment of patients with metastatic adenocarcinoma of the pancreas. Ipsen has gained exclusive commercialization rights for the current and potential future indications for ONIVYDE in the U.S., as well as the current licensing agreements with Servier for commercialization rights ex-U.S. and PharmaEngine for Taiwan.

IMPORTANT SAFETY INFORMATION:

WARNING: SEVERE NEUTROPENIA and SEVERE DIARRHEA

Fatal neutropenic sepsis occurred in 0.8% of patients receiving ONIVYDE. Severe or life-threatening neutropenic fever or sepsis occurred in 3% and severe or life- threatening neutropenia occurred in 20% of patients receiving ONIVYDE in combination with fluorouracil (5-FU) and leucovorin (LV). Withhold ONIVYDE for absolute neutrophil count below 1500/mm3 or neutropenic fever. Monitor blood cell counts periodically during treatment.

Severe diarrhea occurred in 13% of patients receiving ONIVYDE in combination with 5- FU/LV. Do not administer ONIVYDE to patients with bowel obstruction. Withhold ONIVYDE for diarrhea of Grade 2-4 severity. Administer loperamide for late diarrhea of any severity. Administer atropine, if not contraindicated, for early diarrhea of any severity.

CONTRAINDICATION

ONIVYDE is contraindicated in patients who have experienced a severe hypersensitivity reaction to ONIVYDE or irinotecan HCl.

WARNINGS AND PRECAUTIONS

Severe Neutropenia: See Boxed WARNING. In patients receiving ONIVYDE/ 5-FU/LV, the incidence of Grade 3/4 neutropenia was higher among Asian (18/33 [55%]) vs White patients (13/73 [18%]). Neutropenic fever/neutropenic sepsis was reported in 6% of Asian vs 1% of White patients

Severe Diarrhea: See Boxed WARNING. Severe and life-threatening late-onset (onset >24 hours after chemotherapy [9%]) and early-onset diarrhea (onset ≤24 hours after chemotherapy [3%], sometimes with other symptoms of cholinergic reaction) were observed

Interstitial Lung Disease (ILD): Irinotecan HCl can cause severe and fatal ILD. Withhold ONIVYDE in patients with new or progressive dyspnea, cough, and fever, pending diagnostic evaluation. Discontinue ONIVYDE in patients with a confirmed diagnosis of ILD

Severe Hypersensitivity Reactions: Irinotecan HCl can cause severe hypersensitivity reactions, including anaphylactic reactions. Permanently discontinue ONIVYDE in patients who experience a severe hypersensitivity reaction

Embryo-Fetal Toxicity: ONIVYDE can cause fetal harm when administered to a pregnant woman. Advise females of reproductive potential to use effective contraception during and for 1 month after ONIVYDE treatment

ADVERSE REACTIONS

The most common adverse reactions (≥20%) were diarrhea (59%), fatigue/asthenia (56%), vomiting (52%), nausea (51%), decreased appetite (44%), stomatitis (32%), and pyrexia (23%)
The most common Grade 3/4 adverse reactions (≥10%) were diarrhea (13%), fatigue/asthenia (21%), and vomiting (11%)
Adverse reactions led to permanent discontinuation of ONIVYDE in 11% of patients receiving ONIVYDE/5-FU/LV; The most frequent adverse reactions resulting in discontinuation of ONIVYDE were diarrhea, vomiting, and sepsis
Dose reductions of ONIVYDE for adverse reactions occurred in 33% of patients receiving ONIVYDE/5-FU/LV; the most frequent adverse reactions requiring dose reductions were neutropenia, diarrhea, nausea, and anemia
ONIVYDE was withheld or delayed for adverse reactions in 62% of patients receiving ONIVYDE/5-FU/LV; the most frequent adverse reactions requiring interruption or delays were neutropenia, diarrhea, fatigue, vomiting, and thrombocytopenia
The most common laboratory abnormalities (≥20%) were anemia (97%), lymphopenia (81%), neutropenia (52%), increased ALT (51%), hypoalbuminemia (43%), thrombocytopenia (41%), hypomagnesemia (35%), hypokalemia (32%), hypocalcemia (32%), hypophosphatemia (29%), and hyponatremia (27%)
DRUG INTERACTIONS

Avoid the use of strong CYP3A4 inducers, if possible, and substitute non-enzyme inducing therapies ≥2 weeks prior to initiation of ONIVYDE
Avoid the use of strong CYP3A4 or UGT1A1 inhibitors, if possible, and discontinue strong CYP3A4 inhibitors ≥1 week prior to starting therapy

On October 21, 2018 Servier and Taiho Oncology, Inc. (U.S.), a subsidiary of Taiho Pharmaceutical Co., Ltd. (Japan), jointly announced today clinical data from the pivotal Phase III TAS-102 Gastric Study (TAGS) evaluating LONSURF (trifluridine/tipiracil, TAS-102) versus placebo and best supportive care in patients with heavily pre-treated metastatic gastric cancer who have progressed or are intolerant to previous lines of therapy (Press release, Servier, OCT 21, 2018, View Source [SID1234530014]). The study met its primary endpoint of prolonged overall survival (OS) and secondary endpoint measures of progression-free survival (PFS) consistently supported the OS results, as well as continuing to demonstrate the predictable safety and tolerability profile of trifluridine/tipiracil. Data from TAGS was presented by Dr. Hendrik-Tobias Arkenau, Executive Medical Director of the Sarah Cannon Research Institute UK and an investigator for TAGS, at the ESMO (Free ESMO Whitepaper) 2018 Congress in Munich, Germany during an oral session (Abstract #LBA25). The study results were simultaneously published in The Lancet Oncology.

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Based on the results, Servier filed a new application for an additional indication for gastric cancer to the European Medicines Agency (EMA) for LONSURF.

"Patients with metastatic gastric cancer currently have limited treatment options after first and second line therapies have failed," said Dr. Arkenau. "We are pleased to present new data that demonstrate the overall survival clinical benefit of trifluridine/tipiracil in metastatic gastric and gastroesophageal cancer."

In TAGS patients treated with trifluridine/tipiracil showed a clinically meaningful and statistically significant improvement in OS compared with placebo and a 31 percent risk reduction of death (HR 0.69 one sided p=0.00029), which translated into a prolonged median survival of 2.1 months (5.7 months for trifluridine/tipiracil versus 3.6 months for placebo). In addition, trifluridine/tipiracil demonstrated a statistically significant improvement in PFS and time to deterioration of ECOG performance status versus placebo, as well as a predictable and manageable safety profile consistent with that previously reported in patients with metastatic colorectal cancer.

"We’re very excited by the results of TAGS as they show trifluridine/tipiracil has the potential to make a difference to the lives of people living with metastatic gastric cancer who continue to struggle with this devastating disease," said Patrick Therasse, Head of Servier Research and Development Oncology Department.

Trifluridine/tipiracil is currently indicated in 61 countries, including those of the European Union, 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.1

The abstract for the trifluridine/tipiracil presentation is available on the ESMO (Free ESMO Whitepaper) website and the manuscript is published online in The Lancet Oncology.

ENDS

About TAGS
TAGS (TAS-102 Gastric Study) is a Taiho-sponsored pivotal Phase III, multinational, randomized, double-blind study evaluating trifluridine/tipiracil, also known as TAS-102, plus best supportive care (BSC) versus placebo plus BSC in patients with metastatic gastric cancer, including gastro esophageal junction cancer, refractory to standard treatments. The primary endpoint in the TAGS trial is overall survival (OS), and the main secondary endpoint measures include progression-free survival (PFS), and safety and tolerability, as well as quality of life.

TAGS enrolled 507 adult patients with metastatic gastric cancer who had previously received at least two prior regimens for advanced disease. The study was conducted in Japan, the United States, the European Union, Russia, Belarus, Israel, and Turkey.

For more information on TAGS, please visit www.ClinicalTrials.gov (View Source). 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 liver cancer), with an estimated 723,000 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, standard third-line treatments are limited.

About LONSURF (trifluridine and tipiracil, TAS-102)
LONSURF is an oral anticancer drug, comprising a combination of trifluridine (FTD) and tipiracil (TPI), whose dual mechanism of action is designed to maintain clinical activity. LONSURF is registered in Japan, USA, European Union, and in many other countries. In the European Union, LONSURF is indicated 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.1

LONSURF is recommended by the National Institute for Health and Care Excellence (NICE),4 NCCN5,6 and ESMO (Free ESMO Whitepaper) Guidelines7 for the treatment of adult patients with metastatic CRC.

In June 2015, Servier and Taiho Pharmaceutical entered into an exclusive license agreement for the co-development and commercialization of LONSURF.

As of October 2018, LONSURF has been approved as a treatment for mCRC in 61 countries and regions worldwide.

On October 21, 2018 AstraZeneca and Merck (NYSE:MRK), known as MSD outside the United States and Canada, reported detailed results from the Phase 3 SOLO-1 trial testing LYNPARZA 300 mg tablets twice daily as a maintenance treatment for patients with newly-diagnosed advanced BRCA-mutated (BRCAm) ovarian cancer who were in complete or partial response following first-line standard platinum-based chemotherapy (Press release, AstraZeneca (Australia), OCT 21, 2018, View Source [SID1234530011]).

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Results of the trial confirm the statistically-significant and clinically-meaningful improvement in progression-free survival (PFS) for LYNPARZA as compared to placebo, reducing the risk of disease progression or death by 70 percent (HR=0.30 [95% CI, 0.23-0.41]; p<0.001). At 41 months of follow-up, the median PFS for patients treated with LYNPARZA was not reached compared to 13.8 months for patients treated with placebo. Of those receiving LYNPARZA, 60.4 percent remained progression-free at 36 months, compared to 26.9 percent of women in the placebo arm. The data were presented at the Presidential Symposium of the ESMO (Free ESMO Whitepaper) 2018 Congress in Munich, Germany and published simultaneously online in the New England Journal of Medicine (NEJM).

Sean Bohen, executive vice president, Global Medicines Development and chief medical officer at AstraZeneca, said, "There is currently a significant unmet need in the treatment of advanced ovarian cancer because 70 percent of women relapse within the first three years after their initial treatment. The remarkable results of the SOLO-1 trial, which showed that 60 percent of women with newly-diagnosed, advanced BRCA-mutated ovarian cancer remained progression-free at three years, highlight the potential of LYNPARZA as a first-line maintenance therapy in this setting."

Dr. Roy Baynes, senior vice president and head of Global Clinical Development, chief medical officer, Merck Research Laboratories, said, "Our collective goal in oncology research is to improve long-term outcomes for people living with cancer. Based on the SOLO-1 trial results, LYNPARZA is the only PARP inhibitor to have demonstrated a significant and clinically-meaningful improvement in reducing the risk of progression or death for newly-diagnosed patients with advanced BRCA-mutated ovarian cancer following platinum-based chemotherapy. We are working with regulatory authorities as quickly as possible to seek approval of LYNPARZA for these patients."

Kathleen Moore, co-principal investigator of the SOLO-1 trial and associate director, Stephenson Cancer Center at The University of Oklahoma, Oklahoma City, Oklahoma, said, "Women with ovarian cancer are often diagnosed with advanced disease, which unfortunately is associated with poor long-term survival rates. The newly-diagnosed setting is our best opportunity to achieve a sustained remission, since once a patient’s ovarian cancer recurs, it is typically incurable. The SOLO-1 results demonstrate the potential of LYNPARZA maintenance therapy earlier in the treatment pathway and reinforce the importance of identifying a patient’s BRCA mutation status at the time of diagnosis – these results could change the way we treat women with advanced BRCA-mutated ovarian cancer."

The SOLO-1 safety profile was in line with that observed in prior clinical trials. The most common adverse events (AEs) ≥ 20 percent were nausea (77%), fatigue (64%), vomiting (40%), anemia (39%) and diarrhea (34%). The most common ≥ Grade 3 AEs were anemia (22%) and neutropenia (8%). Seventy-one percent of patients on LYNPARZA remained on the recommended starting dose. Additionally, 88 percent of patients on LYNPARZA continued treatment without an AE-related discontinuation. Further, 48 percent of patients on LYNPARZA did not have a dose interruption as a result of an AE.

Per SOLO-1 protocol guidelines, patients who demonstrated a complete response (no radiological evidence of disease) at two years stopped treatment with LYNPARZA; patients who demonstrated a partial response and, who in the opinion of the treating physician can derive further benefit from continuous treatment, were treated beyond two years.

AstraZeneca and Merck are exploring additional trials in ovarian cancer, including the ongoing GINECO/ENGOTov25 Phase 3 trial, PAOLA-1. This trial is testing the effect of LYNPARZAin combination with bevacizumab as a maintenance treatment for patients with newly-diagnosed advanced ovarian cancer regardless of their BRCA status. Results are expected during the second half of 2019.

LYNPARZA is a first-in-class poly ADP-ribose polymerase (PARP) inhibitor approved in the U.S. since 2014. LYNPARZA has a broad clinical development program and AstraZeneca and Merck are working together to deliver LYNPARZA as quickly as possible to more patients across multiple cancer types.

LYNPARZA is not currently FDA-approved for advanced BRCAm ovarian cancer treatment in the first-line maintenance setting. LYNPARZA is indicated for the maintenance treatment of recurrent ovarian cancer in response to platinum-based chemotherapy regardless of BRCA mutation status, and for the treatment of advanced ovarian cancer patients with a germline BRCA mutation previously treated with three or more lines of chemotherapy. Physicians should select advanced ovarian cancer patients for therapy based on a FDA-approved companion diagnostic. Please see complete indications below.

Important Safety Information

Contraindications

There are no contraindications for LYNPARZA.

Warnings and Precautions

Myelodysplastic Syndrome/Acute Myeloid Leukemia (MDS/AML): Occurred in <1.5% of patients exposed to LYNPARZA monotherapy, and the majority of events had a fatal outcome. The duration of therapy in patients who developed secondary MDS/AML varied from <6 months to >2 years. All of these patients had previous chemotherapy with platinum agents and/or other DNA-damaging agents, including radiotherapy, and some also had a history of more than one primary malignancy or of bone marrow dysplasia.

Do not start LYNPARZA until patients have recovered from hematological toxicity caused by previous chemotherapy (≤Grade 1). Monitor complete blood count for cytopenia at baseline and monthly thereafter for clinically significant changes during treatment. For prolonged hematological toxicities, interrupt LYNPARZA and monitor blood count weekly until recovery.

If the levels have not recovered to Grade 1 or less after 4 weeks, refer the patient to a hematologist for further investigations, including bone marrow analysis and blood sample for cytogenetics. Discontinue LYNPARZA if MDS/AML is confirmed.

Pneumonitis: Occurred in <1% of patients exposed to LYNPARZA, and some cases were fatal. If patients present with new or worsening respiratory symptoms such as dyspnea, cough, and fever, or a radiological abnormality occurs, interrupt LYNPARZA treatment and initiate prompt investigation. Discontinue LYNPARZA if pneumonitis is confirmed and treat patient appropriately.

Embryo-Fetal Toxicity: Based on its mechanism of action and findings in animals,

LYNPARZA can cause fetal harm. A pregnancy test is recommended for females of

reproductive potential prior to initiating treatment.

Females

Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception during treatment and for 6 months following the last dose.

Males

Advise male patients with female partners of reproductive potential or who are pregnant to use effective contraception during treatment and for 3 months following the last dose of LYNPARZA and to not donate sperm during this time.

Adverse Reactions—Maintenance Setting

Most common adverse reactions (Grades 1-4) in ≥20% of patients in clinical trials of LYNPARZA in the maintenance setting for SOLO-2: nausea (76%), fatigue (including asthenia) (66%), anemia (44%), vomiting (37%), nasopharyngitis/upper respiratory tract infection (URI)/influenza (36%), diarrhea (33%), arthralgia/myalgia (30%), dysgeusia (27%), headache (26%), decreased appetite (22%), and stomatitis (20%).

Study 19: nausea (71%), fatigue (including asthenia) (63%), vomiting (35%), diarrhea (28%), anemia (23%), respiratory tract infection (22%), constipation (22%), headache (21%), and decreased appetite (21%).

Most common laboratory abnormalities (Grades 1-4) in ≥25% of patients in clinical trials of LYNPARZA in the maintenance setting (SOLO-2/Study 19) were: increase in mean corpuscular volume (89%/82%), decrease in hemoglobin (83%/82%), decrease in leukocytes (69%/58%), decrease in lymphocytes (67%/52%), decrease in absolute neutrophil count (51%/47%), increase in serum creatinine (44%/45%), and decrease in platelets (42%/36%).

Adverse Reactions—Advanced gBRCAm Ovarian Cancer

Most common adverse reactions (Grades 1-4) in ≥20% of patients in clinical trials of LYNPARZA for advanced gBRCAm ovarian cancer after 3 or more lines of chemotherapy (pooled from 6 studies) were: fatigue (including asthenia) (66%), nausea (64%), vomiting (43%), anemia (34%), diarrhea (31%), nasopharyngitis/upper respiratory tract infection (URI) (26%), dyspepsia (25%), myalgia (22%), decreased appetite (22%), and arthralgia/musculoskeletal pain (21%).

Most common laboratory abnormalities (Grades 1-4) in ≥25% of patients in clinical trials of LYNPARZA for advanced gBRCAm ovarian cancer (pooled from 6 studies) were: decrease in hemoglobin (90%), increase in mean corpuscular volume (57%), decrease in lymphocytes (56%), increase in serum creatinine (30%), decrease in platelets (30%), and decrease in absolute neutrophil count (25%).

Adverse Reactions—gBRCAm, HER2-Negative Breast Cancer

Most common adverse reactions (Grades 1-4) in ≥20% of patients in OlympiAD were: nausea (58%), anemia (40%), fatigue (including asthenia) (37%), vomiting (30%), neutropenia (27%), respiratory tract infection (27%), leukopenia (25%), diarrhea (21%), and headache (20%).

Most common laboratory abnormalities (Grades 1-4) in >25% of patients in OlympiAD were: decrease in hemoglobin (82%), decrease in lymphocytes (73%), decrease in leukocytes (71%), increase in mean corpuscular volume (71%), decrease in absolute neutrophil count (46%), and decrease in platelets (33%).

Drug Interactions

Anticancer Agents: Clinical studies of LYNPARZA in combination with other myelosuppressive anticancer agents, including DNA-damaging agents, indicate a potentiation and prolongation of myelosuppressive toxicity.

CYP3A Inhibitors: Avoid concomitant use of strong or moderate CYP3A inhibitors. If a strong or moderate CYP3A inhibitor must be co-administered, reduce the dose of LYNPARZA. Advise patients to avoid grapefruit, grapefruit juice, Seville oranges, and Seville orange juice during LYNPARZA treatment.

CYP3A Inducers: Avoid concomitant use of strong or moderate CYP3A inducers when using LYNPARZA. If a moderate inducer cannot be avoided, there is a potential for decreased efficacy of LYNPARZA.

Use In Specific Populations

Lactation: No data are available regarding the presence of olaparib in human milk, its effects on the breastfed infant or on milk production. Because of the potential for serious adverse reactions in the breastfed infant, advise a lactating woman not to breastfeed during treatment with LYNPARZA and for 1 month after receiving the final dose.

Pediatric Use: The safety and efficacy of LYNPARZA have not been established in pediatric patients.

Hepatic Impairment: No adjustment to the starting dose is required in patients with mild hepatic impairment (Child-Pugh classification A). There are no data in patients with moderate or severe hepatic impairment.

Renal Impairment: No adjustment to the starting dose is necessary in patients with mild renal impairment (CLcr=51-80 mL/min). In patients with moderate renal impairment (CLcr=31-50 mL/min), reduce the dose to 200 mg twice daily. There are no data in patients with severe renal impairment or end-stage renal disease (CLcr ≤30 mL/min).

Indications

LYNPARZA is a poly (ADP-ribose) polymerase (PARP) inhibitor indicated:

For the maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer, who are in complete or partial response to platinum-based chemotherapy.

For the treatment of adult patients with deleterious or suspected deleterious germline BRCA-mutated (gBRCAm) advanced ovarian cancer who have been treated with 3 or more prior lines of chemotherapy. Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

In patients with deleterious or suspected deleterious gBRCAm,human epidermal growth factor receptor 2 (HER2)-negative metastatic breast cancer who have previously been treated with chemotherapy in the neoadjuvant, adjuvant or metastatic setting. Patients with hormone receptor (HR)-positive breast cancer should have been treated with a prior endocrine therapy or be considered inappropriate for endocrine treatment. Select patients for therapy based on an FDA-approved companion diagnostic for LYNPARZA.

Please see complete Prescribing Information , including Patient Information (Medication Guide).

About the SOLO-1 Phase 3 Trial

SOLO-1 is a Phase 3, randomized, double-blind, placebo-controlled, multi-center trial to evaluate the efficacy and safety of LYNPARZA tablets (300 mgtwice daily) as maintenance monotherapy compared with placebo in newly-diagnosed patients with advanced BRCA-mutated ovarian cancer following platinum-based chemotherapy. The trial randomized 391 patients with a deleterious or suspected deleterious BRCA1 or BRCA2 mutation who were in clinical complete or partial response following platinum-based chemotherapy. Patients were randomized (2:1) to receive LYNPARZA or placebo for up to two years or until disease progression (at the investigator’s discretion). The primary endpoint was investigator-assessed progression-free survival and key secondary endpoints include time to second disease progression or death, time to first subsequent treatment and overall survival.

About Ovarian Cancer

Approximately 20,000 women in the U.S. are diagnosed with ovarian cancer (including ovarian, fallopian tube and primary peritoneal cancers) each year. Among women in the U.S., it is the ninth most common cancer and the fifth leading cause of cancer death.

The risk of developing ovarian cancer is increased in women with specific inherited genetic abnormalities, including BRCA mutations.

About BRCA Mutations

BRCA1 and BRCA2 are human genes that produce proteins responsible for repairing damaged DNA and play an important role in maintaining the genetic stability of cells. When either of these genes is mutated, or altered, such that its protein product either is not made or does not function correctly, DNA damage may not be repaired properly, and cells become unstable. As a result, cells are more likely to develop additional genetic alterations that can lead to cancer.

About LYNPARZA (olaparib)

LYNPARZA is the first-in-class PARP inhibitor and the first targeted treatment to potentially exploit DNA damage response (DDR) pathway deficiencies, such as BRCA mutations, to preferentially kill cancer cells. Specifically, in vitro studies have shown that LYNPARZA-induced cytotoxicity may involve inhibition of PARP enzymatic activity and increased formation of PARP-DNA complexes, resulting in DNA damage and cancer cell death.LYNPARZA is being tested in a range of DDR-deficient tumor types.

LYNPARZA, which is being jointly developed and commercialized by AstraZeneca and Merck, has a broad and advanced clinical trial development program, and AstraZeneca and Merck are working together to deliver it as quickly as possible to more patients across multiple cancer types.