A pharmaceutical company making drugs for the treatment of ailments caused by cancer treatment. Neupogen® ( G-CSF) which stimulates the production of white blood cells is manufactured by Amgen.

Amgen Inc. (, ) is an international biotechnology company headquartered in Thousand Oaks, California. Amgen is the largest independent biotech firm, with approx. 15,000 staff members in 2005. Its products include EPOGEN, ARANESP, ENBREL, Kineret, Neulasta, NEUPOGEN, and Sensipar / Mimpara.