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<p style="margin-top: 18px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2"><b>5. ACQUISITION OF ARRESTO BIOSCIENCES, INC. </b></font></p>
<p style="margin-top: 6px; text-indent: 32px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2">In December 2010, we entered into an agreement to acquire Arresto Biosciences, Inc. (Arresto) for $<font class="_mt">225</font> million plus potential future payments based on the achievement of certain sales levels. This transaction closed on January 14, 2011, at which time Arresto became a wholly-owned subsidiary. Arresto was a privately-held, development-stage biotechnology company based in Palo Alto, California, focused on developing antibodies for the potential treatment of fibrotic diseases and cancer. The lead product from the acquisition of Arresto is GS 6224 (formerly AB0024), a humanized monoclonal antibody (mAb) targeting the human lysyl oxidase-like-2 (LOXL2) protein. In addition to an ongoing Phase 1 study of GS 6224 in patients with advanced solid tumors, a Phase 1 study had also been initiated to evaluate GS 6224 in patients with idiopathic pulmonary fibrosis. We believe that Arresto's pipeline and research and development expertise are well aligned with Gilead's areas of focus. </font></p>
<p style="margin-top: 12px; text-indent: 32px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2">The acquisition was accounted for as a business combination. Arresto's results of operations since January 14, 2011 have been included in our Condensed Consolidated Statement of Income and were not significant. </font></p>
<p style="margin-top: 12px; text-indent: 32px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2">We are currently in the process of valuing our contingent consideration liability and the in-process research and development (IPR&D) intangible assets acquired in the business combination, in addition to finalizing the resulting goodwill and deferred tax assets and liabilities. These valuations are based on financial forecasts related to each IPR&D project, which are currently being developed by the Company. As a result, as of March 31, 2011, our accounting for the acquisition was preliminary and we recorded substantially all of the consideration transferred as goodwill. We expect to finalize the purchase accounting for Arresto during the second quarter of 2011.</font></p>
<p style="margin-top: 12px; text-indent: 32px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2">We do not consider the Arresto acquisition to be a material business combination and therefore have not disclosed the pro forma results of operations as required for material business combinations. </font></p> </div>5. ACQUISITION OF ARRESTO BIOSCIENCES, INC.
In December 2010, we entered into an agreement to acquire Arresto Biosciences, Inc. (Arresto) for $225 millionfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescription of a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. This element may be used as a single block of text to encapsulate the entire disclosure (including data and tables) regarding business combinations, including leverage buyout transactions (as applicable).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
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-Name Emerging Issues Task Force (EITF)
-Number 88-16
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 67-73
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph F4
-Subparagraph e
-Appendix F
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