Eisai Oncology & Helsinn Group to Present New CINV Research at 2014 International Symposium on Supportive Care in Cancer

Woodcliff Lake, NJ, and Lugano, Switzerland (ots) - Eisai Inc. and
Helsinn Group announced today that several abstracts highlighting
data analyses of NEPA, an investigational oral fixed- dose
combination of netupitant and palonosetron being evaluated for the
prevention of chemotherapy-induced nausea and vomiting (CINV), will
be presented at the International Symposium on Supportive Care in
Cancer. The Multinational Association of Supportive Care in
Cancer/International Society of Oral Oncology (MASCC/ISOO) will host
this year's Symposium in Miami, Florida.

"There is a need to study a new option for chemotherapy-induced
nausea and vomiting prevention, despite the progress that has been
made thus far," said Kenichi Nomoto, Ph.D., President, Oncology
Product Creation Unit at Eisai Inc. "Further exemplifying our human
health care mission, Eisai is committed to the continued study of
NEPA in order to better understand its potential benefit for patients
who experience these common side effects of chemotherapy."1

Riccardo Braglia, Helsinn's Group Chief Executive Officer,
commented: "Chemotherapy-induced nausea and vomiting is one of the
most common side effects following cancer treatments.[i] Helsinn is
committed to addressing these symptoms and looks forward to
presenting, alongside Eisai, the latest clinical data on NEPA."

In addition to the NEPA abstracts, three abstracts from Eisai's
Health Economics and Outcomes Research group will also be presented,
for a total of seven oral presentations and one poster presentation.

The following abstracts have been accepted for presentation at this
year's MASCC/ISOO Symposium:

|Abstract Name/Description |Session |
|NEPA Abstracts |
|Multiple Cycle CINV Control and Safety of NEPA, |PL03 Plenary |
|a Capsule Containing Netupitant and Palonosetron|Session |
|Administered Once per Cycle of Moderately |M. Aapro |
|Emetogenic Chemotherapy (MEC) | |
| | |
|The aim of this prospective analysis was to | |
|assess maintenance of efficacy and safety across| |
|continued cycles in this randomized, | |
|double-blind Phase 3 study of NEPA versus oral | |
|palonosetron in chemotherapy-naïve patients | |
|receiving multiple cycles of | |
|anthracycline-cyclophosphamide.[ii] | |

|NEPA, a Fixed-Dose Antiemetic Combination of |PS03 Parallel |
|Netupitant and Palonosetron: Results of |Session |
|Effectiveness in 407 Patients Receiving |P. J. Hesketh |
|Cisplatin Plus Chemotherapy of Various Emetic | |
|Risk | |
| | |
|This retrospective study analyzed results of a | |
|completed, double-blind NEPA study to determine | |
|if emetic prevention differed by the | |
|chemotherapy added to cisplatin.[iii] | |

|Do NK1 Receptor Antagonists (RA) Contribute to |PS03 Parallel |
|Nausea Control? Evaluation of the Novel NEPA |Session |
|Fixed-Dose Combination of NK1 RA + 5-HT3 RA from|L. Schwartzberg |
|Pivotal Trials | |
| | |
|This pooled analysis evaluated patients from two| |
|randomized, multinational studies to evaluate | |
|nausea control in patients receiving NEPA plus | |
|dexamethasone compared with single-agent oral | |
|palonosetron plus dexamethasone.[iv] | |

|Is the Addition of an NK1 Receptor Antagonist |PS03 Parallel |
|Beneficial in Patients Receiving Carboplatin? |Session |
|Supplementary Data with NEPA, a Fixed-Dose |K. Jordan |
|Combination of Netupitant and Palonosetron | |
| | |
|This post-hoc analysis from a prospective Phase | |
|3 trial evaluated the effectiveness of a single | |
|oral dose of NEPA plus dexamethasone in | |
|chemotherapy-naïve patients receiving repeated | |
|carboplatin cycles.[v] | |

|Safety of NEPA, an Oral Fixed-Dose Combination |PO18 Poster |
|of Netupitant and Palonosetron: Pooled Data from|Session |
|the Phase 2/3 Clinical Program |Poster Number: |
| |142 |
|This pooled analysis evaluated adverse event |M. Aapro |
|data for 3,280 patients who participated in four| |
|randomized, double-blind, multinational NEPA | |
|clinical trials.[vi] | |

|Eisai Oncology Health Economics and Outcomes Abstracts |

|Comparing the Incidence of Chemotherapy Induced |PS03 Parallel |
|Nausea and Vomiting Following 5HT3RA and NK1 |Session |
|Antiemetic Prophylaxis |R. Knoth |
| | |
|This retrospective cohort analysis compared the | |
|incidence of CINV in patients undergoing | |
|chemotherapy and treated prophylactically with | |
|either intravenous (IV) palonosetron alone or | |
|other 5HT3RAs in combination with an IV or oral | |
|neurokinin 1 receptor antagonist (NK1). | |

|Comparing the Cost of Chemotherapy Induced |PS07 Parallel |
|Nausea and Vomiting Following 5HT3RA and NK1 |Session |
|Antiemetic Prophylaxis |R. Knoth |
| | |
|This study compared CINV-related costs in | |
|patients undergoing chemotherapy and treated | |
|prophylactically with either IV palonosetron | |
|alone vs. other 5HT3RAs in combination with an | |
|IV or oral neurokinin 1 receptor antagonist | |
|(NK1). | |

|Resource Utilization and Costs Associated with |PS07 Parallel |
|Nausea in Patients Experiencing |Session |
|Chemotherapy-Induced Nausea and Vomiting |C. Faria |
| | |
|The goal of this retrospective analysis of | |
|insurance claims from 2005-2011 was to evaluate | |
|the implications of nausea alone on resource | |
|utilization and costs.[vii] | |

The information discussed in this release presents an
investigational agent that is not Food and Drug Administration (FDA)-
approved. It is not intended to convey conclusions about efficacy and
safety. There is no guarantee that this investigational agent will
successfully gain FDA approval.

About Netupitant 300 mg + Palonosetron 0.50 mg (NEPA)

NEPA is an investigational oral, fixed-dose combination of a NK1
receptor antagonist, netupitant, and a 5-HT3 receptor antagonist,
palonosetron, believed to target two critical signaling pathways
associated with chemotherapy-induced nausea and vomiting
(CINV).[viii]

On December 9, 2013, the U.S. Food and Drug Administration (FDA)
accepted for review the submission of Helsinn's New Drug Application
(NDA) for NEPA. Acceptance of the NDA indicates that the FDA has
found the submission to be sufficiently complete to review.

On January 22, 2014, the European Medicines Agency (EMA) accepted
for review the submission of Helsinn's Marketing Authorisation
Application for the prevention of acute and delayed CINV. Acceptance
of the MAA indicates that the EMA has found the submission to be
valid for review.

About Helsinn and Eisai

Helsinn signed a licensing agreement with Eisai Inc. granting
Eisai commercial rights for NEPA in the United States (if approved).
Under the terms of the agreement, Helsinn is responsible for
conducting all development activities (Chemistry and Manufacturing
Controls [CMC], preclinical and clinical), obtaining regulatory
approvals and holding the New Drug Application (NDA). If approved by
the FDA, NEPA will be co-promoted in the United States by Eisai Inc.
and Helsinn Therapeutics U.S. Inc., the U.S. subsidiary of Helsinn.

About the Helsinn Group

Helsinn is a family run, privately owned pharmaceutical group
focused on building quality cancer care with a large portfolio of
products. Founded in 1976 with headquarters in Lugano, Switzerland,
Helsinn also has operating subsidiaries in Ireland, the U.S. and a
Representative Office in China. Helsinn's business model is focused
on the licensing of pharmaceuticals, medical devices and nutritional
supplement products in the therapeutic area of cancer care.

Helsinn Group in-licenses early-to-late stage new chemical
entities, completing their development by performing preclinical and
clinical studies and associated manufacturing activities. Helsinn
then prepares necessary regulatory filings in order to achieve
marketing approvals worldwide. Helsinn's products are out-licensed to
its global network of marketing and commercial partners that have
been selected for their local market knowledge. Helsinn supports
these partners by providing a full range of product and scientific
management services, including commercial, regulatory, and medical
marketing advice. In March 2013, Helsinn established a new commercial
organization within its subsidiary, Helsinn Therapeutics (U.S.),
Inc., in order to conduct direct sales and marketing activities
within the U.S. market. Helsinn's products are manufactured according
to the highest quality, safety, and environmental standards at
Helsinn's GMP facilities in Switzerland and Ireland from where they
are then supplied worldwide to customers. Further information on
Helsinn Group is available at www.helsinn.com.

About Eisai Oncology

Eisai Oncology is dedicated to discovering, developing and
producing innovative oncology therapies that may make a difference
and impact the lives of patients and their families. This passion for
people is part of Eisai's human health care (hhc) mission, which
strives for better understanding of the needs of patients and their
families to help increase the benefits health care provides. Our
commitment to meaningful progress in oncology research, built on
scientific expertise, is supported by a global capability to conduct
discovery and preclinical research, and develop small molecules,
vaccines, and biologic agents across various types of cancer. For
more information about Eisai, please visit www.eisai.com/US.

About Eisai Inc.

At Eisai Inc., human health care is our goal. We give our first
thoughts to patients and their families, and helping to increase the
benefits health care provides. As the U.S. pharmaceutical subsidiary
of Tokyo-based Eisai Co., Ltd., we have a passionate commitment to
patient care that is the driving force behind our efforts to help
address unmet medical needs. We are a fully integrated pharmaceutical
business with discovery, clinical, manufacturing and marketing
capabilities. Our key areas of commercial focus include oncology and
specialty care (Alzheimer's disease, epilepsy and metabolic
disorders). To learn more about Eisai Inc., please visit us at
www.eisai.com/US.

Eisai Inc. has affiliates that are part of a global product
creation organization that includes R&D facilities in Massachusetts,
New Jersey, North Carolina and Pennsylvania, as well as a global
demand chain organization that includes manufacturing facilities in
Maryland and North Carolina. Eisai's global areas of R&D focus
include neuroscience; oncology; metabolic disorders; vascular,
inflammatory and immunological reaction; and antibody-based programs.

[1] Roscoe JA, Morrow GR, Hickok JT, Stern RM. Nausea and vomiting
remain a significant clinical problem: Trends over time in
controlling chemotherapy-induced nausea and vomiting in 1413 patients
treated in community clinical practices. J Pain and Symptom
Management. 2000;20(2):113-121.

[2] Aapro M et al. Multiple cycle CINV control and safety of NEPA, a
capsule containing netupitant and palonosetron administered once per
cycle of moderately emetogenic chemotherapy (MEC). MASCC/ISOO 2014
Abstract. June 2014.

[3] Hesketh PJ et al. NEPA, a fixed-dose antiemetic combination of
netupitant and palonosetron: Results of effectiveness in 407 patients
receiving cisplatin plus chemotherapy of various emetic risk.
MASCC/ISOO 2014 Abstract. June 2014.

[4] Schwartzberg L et al. Do NK1 receptor antagonists (RA) contribute
to nausea control? Evaluation of the novel NEPA fixed- dose
combination of NK1 RA + 5-HT3 RA from pivotal trials. MASCC/ISOO 2014
Abstract. June 2014.

[5] Jordan K et al. Is the addition of an NK1 receptor antagonist
beneficial in patients receiving carboplatin? Supplementary data with
NEPA, a fixed-dose combination of netupitant and palonosetron.
MASCC/ISOO 2014 Abstract. June 2014.

[6] Aapro M et al. Safety of NEPA, an oral fixed-dose combination of
netupitant and palonosetron: Pooled data from the Phase 2/3 clinical
program. MASCC/ISOO 2014 Abstract. June 2014.

[7] Faria C et al. Resource utilization and costs associated with
nausea in patients experiencing chemotherapy induced nausea and
vomiting. MASCC/ISOO 2014 Abstract. June 2014.

[8] Gralla R et al. A Phase 3 study evaluating the safety and
efficacy of NEPA, a fixed-dose combination of netupitant and
palonosetron, for prevention of chemotherapy-induced nausea and
vomiting over repeated cycles of chemotherapy. Annals of Oncology.
Accessed March 24, 2014: http://ots.ch/Yr4LX.

Contact:
Eisai Inc.
Media Inquiries
Laurie Landau
Eisai Inc.
(201) 746-2510
laurie_landau@eisai.com

Investor Inquiries
Alex Scott
Eisai Inc.
(201) 746-2177
alex_scott@eisai.com

Helsinn Group
Paola Bonvicini
Head of Communication & Press Office
PH +41 91-985-21-21
info-hhc@helsinn.com