MURRAY FRANK LLP Announces Investigation of Illumina, Inc.19:06 EST Wednesday, January 25, 2012 NEW YORK (Business Wire) -- MURRAY FRANK LLP is investigating claims of breach of fiduciary duties by certain members of the board of directors of Illumina, Inc. (NASDAQ: ILMN) (“Illumina” or the “Company”) in relation to the proposed acquisition of the Company by Roche Holding AG (“Roche”). On January 25, 2012, Roche announced that it had offered $5.7 billion in a bid to acquire Illumina, in an all-cash transaction under which Illumina stockholders would receive $44.50 in exchange for each share of Illumina common stock owned. The offer represents a premium of 18% over the closing price of Illumina's stock on January 24, 2012, and a 64% premium over the closing price of Illumina's stock on December 21, 2011 – the day before market rumors about a potential transaction between Roche and Illumina drove Illumina's stock significantly higher. The investigation focuses on whether certain members of Illumina's board of directors breached their fiduciary duties in connection with Roche's proposed acquisition of the Company by refusing to enter into negotiations regarding Roche's offer to acquire the Company well above its market price. If you are a current investor in Illumina, who purchased ILMN shares before January 25, 2012, and you wish to discuss this investigation or have any questions concerning this notice or your rights or interests with respect to these matters, please contact Bridget V. Hamill at (800) 497-8076 or (212) 682-1818, or by email at investigations@murrayfrank.com. MURRAY FRANK LLPBridget V. Hamill800-497-8076212-682-1818investigations@murrayfrank.comwww.murrayfrank.com