Exhibit 99.1

             ARIAD Reports First Quarter 2007 Results and
              Provides Update on Corporate Developments

    CAMBRIDGE, Mass.--(BUSINESS WIRE)--May 8, 2007--ARIAD
Pharmaceuticals, Inc. (NASDAQ: ARIA) today announced financial results
for the quarter ended March 31, 2007 and provided an update on
corporate developments.

    "We are rapidly approaching achievement of three of our key
objectives towards becoming a fully integrated oncology company.
First, we expect to execute a partnership agreement with a major
pharmaceutical company this quarter to help develop and commercialize
our lead product candidate - the mTOR inhibitor, AP23573 - in a broad
range of cancers. Second, we plan to initiate patient enrollment next
quarter in our Phase 3 pivotal trial of oral AP23573 in metastatic
sarcoma. Lastly, we are on track to file an investigational new drug
application in the second half of this year for our next product
candidate - the multi-targeted kinase inhibitor, AP24534 - initially
for use in patients with drug-resistant chronic myeloid leukemia,"
said Harvey J. Berger, M.D., chairman and chief executive officer of
ARIAD.

    Financial Highlights

    For the quarter ended March 31, 2007, the Company reported a net
loss of $15.0 million, or $0.23 per share, as compared to a net loss
of $15.4 million, or $0.25 per share, for the quarter ended March 31,
2006. The decrease in net loss for the quarter is due primarily to
lower manufacturing and clinical-trial costs related to the Company's
lead cancer product candidate, AP23573, and lower costs related to the
NF-(kappa)B patent infringement litigation, offset in part by higher
costs resulting from preclinical, manufacturing and toxicology studies
related to the Company's second product candidate, AP24534. Cash used
in operations for the quarter ended March 31, 2007 was $12.6 million.

    The Company ended the first quarter 2007 with $39.1 million in
cash, cash equivalents, and marketable securities, compared with $39.8
million at the end of 2006.

    Corporate and Development Highlights

    The Company has made substantial progress this year on multiple
fronts, including:

    Novel mTOR Inhibitor - AP23573

    --  Phase 3 Pivotal Trial in Sarcomas. Based on feedback from the
        U.S. Food and Drug Administration, ARIAD plans to launch its
        randomized Phase 3 trial of oral AP23573 in metastatic sarcoma
        patients following a favorable response to chemotherapy;
        overall survival will be the primary endpoint and
        progression-free survival will be a key secondary endpoint.
        The Company expects to initiate patient enrollment in the
        third quarter of 2007.

    --  Investor Day Featuring Leading Sarcoma Experts. In February,
        ARIAD hosted its first-ever Investor & Analyst Day, at which
        it provided a detailed update on the status of AP23573. ARIAD
        management was joined by a panel of leading sarcoma experts to
        discuss their clinical experience with AP23573, an overview of
        the Phase 3 trial, current treatment paradigms in sarcomas and
        the significant unmet medical need in both adult and pediatric
        populations.

    --  Commercial Update. As part of its Investor & Analyst Day,
        ARIAD management discussed the $48 billion global oncology
        market and the expected drivers of market growth - namely
        targeted therapeutics, such as AP23573. The Company outlined
        its market entry and market expansion strategies for AP23573,
        including potential estimated peak U.S. revenues of $300
        million for AP23573 in sarcomas and potential total peak
        revenues for AP23573 in the U.S. of over $1 billion assuming
        successful development and approval of AP23573 in multiple
        indications.

    --  Partnering Update. ARIAD is completing negotiation of the
        definitive agreements for its collaboration with a major
        pharmaceutical company to help develop and commercialize
        AP23573 in a broad range of oncology indications. The Company
        expects to execute the agreements with the partner in the
        second quarter of 2007.

    Novel Bcr-Abl Inhibitor for Drug-Resistant CML - AP24534

    --  Investor Day Update on AP24534. The Company provided an
        overview of its next oncology product candidate - the
        multi-targeted kinase inhibitor, AP24534, which was designed
        to treat drug-resistant chronic myeloid leukemia (CML).
        AP24534 has demonstrated broad activity against the common
        mutant forms of Bcr-Abl including the T315I mutant, as well as
        the un-mutated form of this oncogenic enzyme. The Company
        highlighted results of studies from well-established animal
        models showing dose-dependant tumor shrinkage and increased
        survival due to oral AP24534. ARIAD plans to file an
        investigational new drug application for AP24534 in the second
        half of 2007. Initial clinical trials of AP24534 are being
        planned for patients with drug-resistant CML.

    Corporate Activities

    --  ARGENT(TM) License Agreement. The Company entered into a
        non-exclusive, royalty-bearing license agreement to its ARGENT
        cell-signaling regulation technology with CellNexus, LLC to
        develop and commercialize new cancer therapies. The initial
        CellNexus product candidate is a novel cell therapy to prevent
        and treat anemia in cancer patients, while potentially
        eliminating stimulation of tumor growth and angiogenesis that
        may be caused by recombinant forms of erythropoietin.

    --  NF-(kappa)B. The Company and its co-plaintiffs filed an action
        against Amgen Inc. and certain affiliated entities (Amgen) and
        Wyeth alleging infringement of ARIAD's pioneering U.S. patent
        covering methods of treating human disease by regulating
        NF-(kappa)B cell-signaling activity. The claim was filed in
        response to a lawsuit filed by Amgen against ARIAD in the
        United States District Court for the District of Delaware in
        April 2006 seeking declaratory judgment that the claims of
        U.S. Patent No. 6,410,516 are invalid and that Amgen has not
        infringed any of the claims of the patent based on activities
        related to Enbrel(R) (etanercept) and Kineret(R) (anakinra).

    --  Financing. The Company entered into a common stock purchase
        agreement with Azimuth Opportunity, Ltd., which provides for
        the sale and issuance of up to $50 million in equity financing
        by ARIAD to Azimuth from time to time, in ARIAD's discretion.
        In the first quarter 2007, Azimuth purchased 3,072,393 shares
        of common stock from ARIAD at an aggregate purchase price of
        $12.5 million, or net proceeds of approximately $12.3 million
        after deducting expenses.

    Upcoming Medical Meetings

    Clinical data on AP23573 will be presented at the following
meeting:

    --  American Society of Clinical Oncology Annual Meeting, Chicago,
        Illinois,

    June 1 to 5, 2007.

    Upcoming Investor Meetings

    ARIAD management will present updated overviews of the Company's
progress and plans at several investor conferences:

    --  BIO 2007 International Convention, Boston, Massachusetts, May
        9, 2007.

    --  Bank of America 2007 Healthcare Conference, Las Vegas, Nevada,
        May 31, 2007.

    --  Bear Stearns Boston Biotech Confab, Boston, Massachusetts,
        June 7, 2007.

    --  Needham & Company Sixth Annual Biotechnology and Medical
        Technology Conference, New York, New York, June 13 to 14,
        2007.

    Today's Conference Call Reminder

    ARIAD will hold a live webcast of its quarterly conference call
today at 8:00 a.m. (ET). The live webcast can be accessed by visiting
the investor relations section of the Company's website at
http://www.ariad.com/investor. The call can be accessed by dialing
1-800-561-2731 (domestic) or 617-614-3528 (international) five minutes
prior to the start time and providing the passcode 95004873. A replay
of the call will be available on the ARIAD website approximately two
hours after completion of the call and will be archived for two weeks.

    About ARIAD

    ARIAD is engaged in the discovery and development of breakthrough
medicines to treat cancer by regulating cell signaling with small
molecules. The Company is developing a comprehensive approach to
patients with cancer that addresses the greatest medical need -
aggressive and advanced-stage cancers for which current treatments are
inadequate. Medinol Ltd. also is developing stents and other medical
devices that deliver ARIAD's lead cancer product candidate to prevent
reblockage at sites of vascular injury following stent-assisted
angioplasty. ARIAD has an exclusive license to pioneering technology
and patents related to certain NF-(kappa)B treatment methods, and the
discovery and development of drugs to regulate NF-(kappa)B
cell-signaling activity, which may be useful in treating certain
diseases. Additional information about ARIAD can be found on the web
at http://www.ariad.com.

    Some of the matters discussed herein are "forward-looking
statements" within the meaning of the Private Securities Litigation
Reform Act of 1995. Such statements are identified by the use of words
such as "anticipate," "estimate," "expect," "project," "intend,"
"plan," "believe," and other words and terms of similar meaning in
connection with any discussion of future operating or financial
performance. Such statements, including our plans to execute a
partnership for AP23573 in the second quarter of 2007, initiate
enrollment in a Phase 3 clinical trial of AP23573 in metastatic
sarcoma in the third quarter of 2007 and file an IND with the FDA for
AP24534 in the second half of 2007, are based on management's current
expectations and are subject to certain factors, risks and
uncertainties that may cause actual results, outcome of events, timing
and performance to differ materially from those expressed or implied
by such forward-looking statements. These risks include, but are not
limited to, risks and uncertainties regarding our ability to
accurately estimate the timing and actual R&D expenses and other costs
associated with the preclinical and clinical development and
manufacture of our product candidates, the adequacy of our capital
resources and the availability of additional funding, risks and
uncertainties regarding our ability to manufacture or have
manufactured our product candidates on a commercial scale, risks and
uncertainties regarding our ability to successfully enroll and conduct
clinical studies of product candidates, risks and uncertainties that
clinical trial results at any phase of development may be adverse or
may not be predictive of future results or lead to regulatory approval
of any of our or any partner's product candidates, risks and
uncertainties of third-party intellectual property claims relating to
our and any partner's product candidates, and risks and uncertainties
relating to regulatory oversight, the timing, scope, cost and outcome
of legal proceedings and reexamination proceedings in the U.S. Patent
and Trademark Office concerning our NF-(kappa)B patent portfolio,
future capital needs, key employees, dependence on collaborators and
manufacturers, markets, economic conditions, products, services,
prices, reimbursement rates, competition and other factors detailed in
the Company's public filings with the Securities and Exchange
Commission, including ARIAD's Annual Report on Form 10-K for the
fiscal year ended December 31, 2006. The information contained in this
document is believed to be current as of the date of original issue.
The Company does not intend to update any of the forward-looking
statements after the date of this document to conform these statements
to actual results or to changes in the Company's expectations, except
as required by law.



             ARIAD PHARMACEUTICALS, INC. AND SUBSIDIARIES
           CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

In thousands, except share and                   Three Months Ended
per share data                                       March 31,
                                              ------------------------
                                                 2007        2006
                                              ----------- ------------
                                                    (Unaudited)

Total revenue                                $       190  $       229
                                              -----------  -----------

Operating expenses:
         Research and development                 11,023       11,674
         General and administrative                4,403        4,456
                                              -----------  -----------
                Total operating expenses          15,426       16,130
                                              -----------  -----------
Other income, net                                    285          543
                                              -----------  -----------
Net loss                                     $   (14,951) $   (15,358)
                                              ===========  ===========

Net loss per share                           $      (.23) $      (.25)
                                              ===========  ===========

Weighted average number of
shares of common stock outstanding            65,625,902   61,728,913





           CONDENSED CONSOLIDATED BALANCE SHEET INFORMATION

In thousands                                  March 31,   December 31,
                                                 2007         2006
                                             -----------  ------------
                                             (Unaudited)
Cash, cash equivalents and marketable
 securities                                 $    39,074  $     39,804
Total assets                                $    50,595  $     51,043
Total liabilities                           $    21,452  $     20,781
Stockholders' equity                        $    29,143  $     30,262

    CONTACT: ARIAD Pharmaceuticals, Inc.
             Edward Fitzgerald, 617-621-2345
             or
             Pure Communications
             Andrea L. Johnston, 910-616-5858