UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 13, 2010

ARIAD Pharmaceuticals, Inc.
(Exact name of registrant as specified in its charter)

Delaware

0-21696

22-3106987

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

26 Landsdowne Street, Cambridge, Massachusetts	02139
(Address of principal executive offices)	(Zip Code)

Registrant's telephone number, including area code: (617) 494-0400

Not Applicable
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

⃞ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

⃞ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

⃞ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

⃞ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

On September 13, 2010, ARIAD Pharmaceuticals, Inc. (the “Company”) issued a press release announcing the initiation of the pivotal Phase 2 clinical trial of its investigational pan-BCR-ABL inhibitor, ponatinib (previously known as AP24534), in patients with resistant or intolerant chronic myeloid leukemia (CML) and Philadelphia positive acute lymphoblastic leukemia (Ph+ ALL). The PACE (Ponatinib Ph+ ALL and CML Evaluation) trial is designed to provide definitive clinical data for regulatory approval of ponatinib in this setting. Ponatinib has been granted orphan drug status in both the United States and Europe for the treatment of CML and Ph+ ALL.

A copy of the press release is being filed herewith as Exhibit 99.1 and this information contained therein is incorporated by reference into this Current Report on Form 8-K.

(d) Exhibits

Exhibit No.	Description
99.1	Press Release dated September 13, 2010.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		ARIAD Pharmaceuticals, Inc.

Date:	September 13, 2010	By:	/s/ Edward M. Fitzgerald
			Edward M. Fitzgerald
			Executive Vice President, Chief Financial Officer

Exhibit Number	Description

99.1	Press Release dated September 13, 2010.