Follow-Up Results from Study Comparing SPRYCEL(R) (dasatinib) to Imatinib in First-Line Treatment of Adults with Ph+ CP-CML Demonstrate Improved Response Rates Consistent with 12 Month Data[1]

By Bristol-myers Squibb, PRNE
Sunday, December 5, 2010

18-Month Data Presented at 52nd Annual Meeting of the American Society of Hematology[1]

PRINCETON, New Jersey and TOKYO, December 6, 2010 - Bristol-Myers Squibb Company ( (NYSE:BMY) and Otsuka
Pharmaceutical Co., Ltd. today announced 18-month follow-up results from the
Phase 3 DASISION study of SPRYCEL(R) (dasatinib) 100 mg once daily vs.
imatinib (400 mg daily) in the first-line treatment of adults with
Philadelphia chromosome-positive (Ph+) chronic phase chronic myeloid leukemia
(CP-CML). Results at 18 months were consistent with 12 month data in which
SPRYCEL demonstrated higher and faster rates of complete cytogenetic response
(CCyR) and major molecular response* (MMR) compared to imatinib.[1] Results
from the 18-month follow up were presented today at the 52nd Annual Meeting
of the American Society of Hematology.[1]

Safety data from DASISION demonstrated that the most frequently reported
serious adverse reactions with SPRYCEL included pleural effusion (2%),
hemorrhage (2%), congestive heart failure (1%) and pyrexia ( 1%). Commonly
reported adverse events (greater than or equal to 10%, of all grades) with
SPRYCEL and imatinib included superficial edema (10% and 36%), pleural
effusion (12% and 0%), myalgia (22% and 38%), nausea (9% and 21%), vomiting
(5% and 10%), diarrhea (18% and 19%), fatigue (8% and 11%), headache
(12% and 10%) and rash (11% and 17%).[1] Overall rates of fluid retention
observed in the study were 23% with SPRYCEL and 43% with imatinib.[1]

"The follow up results from DASISION are important as they continue to
support the use of SPRYCEL as a first-line treatment option for
newly-diagnosed Ph+ CP-CML patients," said Neil Shah, MD, PhD, Assistant
Professor, Division of Hematology/Oncology, University of California, San
, and presenter of the study results.

On October 28, 2010, the U.S. Food and Drug Administration (FDA) approved
SPRYCEL 100 mg once daily for newly diagnosed adults with Ph+ CP-CML based on
the twelve-month results from DASISION, which were published in the New
England Journal of Medicine[2] and presented at the 46th Annual Meeting of
the American Society of Clinical Oncology earlier this year.[2] The
effectiveness of SPRYCEL is based on cytogenetic and major molecular
response rates. The DASISION trial is ongoing and further data is required
to determine long-term outcome.

Detailed Study Results From 18-Month Follow-Up

In the DASISION study, 78% of patients treated with SPRYCEL(R)
(dasatinib) vs. 70% of patients treated with imatinib achieved confirmed CCyR
(two consecutive assessments of CCyR at least 28 days apart) by 18 months
(p=0.0366).[1] MMR at any time was 57% for patients treated with SPRYCEL vs.
41% for patients treated with imatinib (p=0.0002).[1] Transformation to
accelerated or blast phase occurred in 6 patients receiving SPRYCEL and 9
patients receiving imatinib.[1]

Pleural effusion (all grades) was reported in 12% of those treated with
SPRYCEL, and in none treated with imatinib; Grade 3 pleural effusion was
reported in <1% of patients receiving SPRYCEL.[1] Thrombocytopenia occurred
in 19% of those treated with SPRYCEL and 10% of those treated with imatinib.
[1] Neutropenia occurred in 22% of those treated with SPRYCEL and 20% of
those treated with imatinib.[1]

About the DASISION Study

DASISION (Dasatinib versus Imatinib Study in Treatment-Naïve CP-CML
Patients) is an open-label, randomized, Phase 3 international trial of
SPRYCEL 100 mg taken once daily vs. imatinib 400 mg taken once daily, in the
treatment of newly diagnosed chronic phase Ph+ CML. [2] The study enrolled
519 patients; 259 patients were randomized to receive SPRYCEL and 260
patients were randomized to receive imatinib.[2] The primary study endpoint
was the rate of confirmed CCyR by 12 months.[2] Secondary endpoints included
time-to confirmed CCyR, MMR rate and time-to MMR. [2]


Discovered and developed by Bristol-Myers Squibb, SPRYCEL initially
received accelerated FDA approval in June 2006 as a treatment for adults for
all phases of Ph+ CP-CML (chronic, accelerated, or myeloid or lymphoid blast
phase) with resistance or intolerance to prior therapy including imatinib.
Full approval was granted in May 2009. On October 28, 2010, the FDA approved
SPRYCEL 100 mg once daily in newly diagnosed adults with Ph+ CP-CML. SPRYCEL
is also approved for the treatment of adults with Ph+ acute lymphoblastic
leukemia with resistance or intolerance to prior therapy.

About Chronic Myeloid Leukemia

CML is a slow-growing type of leukemia in which the body produces an
uncontrolled number of abnormal white blood cells.[3] About 24,800 people are
living with the disease in the United States.[4] It is estimated that 4,870
new cases will be diagnosed in 2010.[7] CML occurs when pieces of two
different chromosomes break off and attach to each other.[5] The Philadelphia
chromosome contains an abnormal gene called the bcr-abl gene.[8] This gene
produces the BCR-ABL protein, which causes the body to make too many abnormal
white blood cells.[8] There is no known cause for the genetic change that
causes CML.[6]

About Bristol-Myers Squibb and Otsuka Pharmaceutical Co., Ltd.

Bristol-Myers Squibb and Otsuka Pharmaceutical Co., Ltd. are
collaborative partners in the commercialisation of SPRYCEL in the United
, and in Japan. SPRYCEL was discovered and developed by Bristol-Myers

Bristol-Myers Squibb is a global biopharmaceutical company whose mission
is to discover, develop and deliver innovative medicines that help patients
prevail against serious diseases. Around the world, our medicines are helping
millions of patients in their fight against such diseases as cancer, heart
disease, HIV/AIDS, psychiatric disorders, rheumatoid arthritis, chronic
hepatitis B virus infection and diabetes.

Founded in 1964, Otsuka Pharmaceutical Co., Ltd. is a global healthcare
company with the corporate philosophy: 'Otsuka-people creating new products
for better health worldwide.' Otsuka researches, develops, manufactures and
markets innovative and original products, with a focus on pharmaceutical
products for the treatment of diseases and consumer products for the
maintenance of everyday health.


[*] Major molecular response (MMR) is defined as a BCR-ABL transcript
level of less than or equal to (3 log reduction) as measured by real-time
quantitative polymerase chain reaction (RQ-PCR) of peripheral blood.

[1] Shah, NP., Kantarjian, H., Hochhaus, A., et. al. Dasatinib versus
Imatinib in Patients with Newly Diagnosed Chronic Myeloid Leukemia in Chronic
Phase (CML-CP) in the DASISION Trial: 18-Month Follow-up. ASH 2010 Abstract
Oral L-S Draft.

[2] "SPRYCELÒ (dasatinib) Demonstrates Superior Confirmed Complete
Cytogenetic Response Rates Compared to GleevecÒ[2] in Study of Adult Patients
with Newly Diagnosed Chronic Myeloid Leukemia in Chronic Phase,"
Bristol-Myers Squibb Press Release, June 5, 2010.

[3] National Cancer Institute Web site. Dictionary of cancer terms.
"chronic myeloid leukemia." Available at:
Accessed on November 4, 2010.

[4] The Leukemia & Lymphoma Society Web site. "Chronic Myelogenous
Leukemia". Available at: Accessed on November
4, 2010

[5] American Cancer Society Web site. Do we know what causes chronic
myeloid leukemia? Available at:
Accessed on November 4, 2010.

[6] American Cancer Society Web site. "Can Chronic Myeloid Leukemia Be
Prevented?" Available at:
Accessed on November 4, 2010.

(Due to the length of the above URLs, it may be necessary to copy and
paste the above hyperlinks into your Internet browser's URL address field.
Remove the spaces if they are present.)

Contacts: Bristol-Myers Squibb, Media: Sarah Koenig, Bristol-Myers Squibb,
+1-609-252-4145, sarah.koenig at; European Media Contact: Elzbieta
Zawislak, Bristol-Myers Squibb, +33-615-523580, elzbieta.zawislak at;
Otsuka, US: David Caruba, Otsuka America Pharmaceutical Inc.,
+1-609-524-6798, david.caruba at; Japan: Masamitsu Kitada,
Otsuka Pharmaceutical Co., Ltd., kitadams at

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