Celgene Corporation (NASDAQ: CELG)
and Abraxis BioScience Inc . (Nasdaq: ABII)
today jointly announced the signing of a definitive merger agreement in which Celgene has agreed to acquire Abraxis BioScience. Under the terms of the merger agreement, each share of Abraxis BioScience common stock will be converted into the right to receive an upfront payment of $58.00 in cash and 0.2617 shares of Celgene common stock. The upfront payment values Abraxis BioScience at approximately $2.9 billion, net of cash. Each share will also receive one tradeable Contingent Value Right (CVR), which entitles its holder to receive payments for future regulatory milestones and commercial royalties. The transaction is expected to be modestly dilutive to non-GAAP earnings in 2011 and accretive in 2012 and beyond.
The acquisition of Abraxis BioScience accelerates Celgene's strategy to become a global leader in oncology. The transaction adds ABRAXANE for Injectable Suspension (paclitaxel protein-bound particles for injectable suspension) (albumin-bound) to the Company’s existing portfolio of leading cancer products. ABRAXANE was approved in January 2005 by the U.S. Food and Drug Administration (FDA) for the treatment of breast cancer after failure of combination chemotherapy for metastatic disease or relapse within six months of adjuvant chemotherapy. Prior therapy should have included an anthracycline unless clinically contraindicated. ABRAXANE was approved by the European Medicines Agency in January 2008 for a similar indication. Additionally, ABRAXANE
has received orphan drug designation for stage IIB-IV melanoma and pancreatic cancer.
"The acquisition of Abraxis BioScience is an exceptional strategic fit that will accelerate our strategy of becoming a global leader in oncology," said Bob Hugin, Chief Executive Officer of Celgene Corporation. "We are excited by the opportunity to leverage our clinical, regulatory and commercial capabilities to provide metastatic breast cancer patients with an innovative treatment in ABRAXANE. We are also excited by the potential of ABRAXANE to treat additional solid tumor malignancies such as non-small cell lung and pancreatic cancer. Finally, the potential of
-based therapeutics developed by Abraxis coupled with Celgene’s innovative science offers the potential to deliver long-term value to patients, doctors and all of our stakeholders."
technology platform is changing the treatment paradigm for difficult-to-treat cancers,” said Patrick Soon-Shiong, M.D., Executive Chairman of Abraxis BioScience. “In Celgene we have found the ideal partner to further expand the reach of ABRAXANE and our other treatments, in order to improve the lives of patients worldwide.”
Abraxis BioScience has developed a proprietary nanoparticle albumin bound (
) technology which leverages albumin nanoparticles for the active and targeted delivery of chemotherapeutics to the tumor. This
-driven chemotherapy provides a new paradigm for penetrating the blood-stroma barrier to reach the tumor cell. The proposed mechanism of delivery of this
-driven chemotherapy is thought to be by targeting a previously unrecognized tumor-activated, albumin-specific biologic pathway with a nanoshell of the human blood protein albumin. This nano-shuttle system is believed to activate an albumin-specific (Gp60) receptor-mediated transcytosis path through the cell wall of proliferating tumor cells, using caveolin-1 activated caveolar transport. Once in the stromal micro-environment, the albumin-bound drug may be preferentially localized by a second albumin-specific binding protein, SPARC, a protein secreted into the stroma by tumor cells. The resulting collapse of stroma surrounding the tumor cell may thus enhance the delivery of the
-chemotherapeutic to the intracellular core of the tumor cell itself.
Recent ABRAXANE Clinical Data: First-line Non-small Cell Lung Cancer
At the 46th Annual Meeting of the American Society of Clinical Oncology (ASCO) held earlier this month in Chicago, 34 scientific abstracts evaluating the use of ABRAXANE were presented. Data presented from a randomized phase III trial evaluating ABRAXANE plus carboplatin showed a statistically significant (p=0.005) 31 percent improvement in overall response rate (ORR) when compared with paclitaxel plus carboplatin in the first-line treatment of patients with non-small cell lung cancer (NSCLC). These data achieved the primary end point agreed to with the FDA in a Special Protocol Assessment. In addition, a retrospective analysis of the highly difficult-to-treat subset of squamous cell carcinoma, showed a 67 percent improvement in ORR (p<0.001) in those who received the ABRAXANE combination versus those who received the paclitaxel combination.