Celgene Corporation is a pharmaceutical company that makes cancer and immunology drugs. Its major product is Revlimid (lenalidomide), which is used in the treatment of multiple myeloma, and also in certain anemias. The company is incorporated in Delaware, headquartered in Summit, New Jersey, and a subsidiary of Bristol Myers Squibb (BMS). Celgene was originally a unit of Celanese. In 1986, Celanese completed the corporate spin-off of Celgene following the merger of Celanese with American Hoechst. In August 2000, Celgene acquired Signal Pharmaceuticals, Inc., a privately held company that developed pharmaceuticals to regulate disease-related genes. Signal Pharmaceuticals was rebranded as Celgene Research San Diego. In December 2002, Celgene acquired Anthrogenesis, a privately held New Jersey-based biotherapeutics company and cord blood banking business, which is developing technology for the recovery of stem cells from placental tissues following the completion of full-term successful pregnancies. Anthrogenesis was rebranded as Celgene Cellular Therapeutics. In 2006, Celgene certified McKesson Specialty, a specialty pharmacy, as one of a group of pharmacies contracted to launch lenalidomide (Revlimid). As a specialty drug, lenalidomide is only available through the a distribution network consisting of specialty pharmacies contracted by the company. In March 2008, Celgene acquired Pharmion Corporation for 2.9 billion in its expansion into drugs that attack solid tumors. Abraxis produced Abraxane, the cancer-fighting drug that can be given in high doses. In November 2011, Celgene relocated its United Kingdom headquarters from Windsor, Berkshire, to Stockley Park, near Heathrow airport which is also the home of GlaxoSmithKline's UK operations. In January 2012, Celgene agreed to acquire Avila Therapeutics, Inc.