BioMarin Pharmaceutical Inc. is a biotechnology company based in San Rafael, California. It has offices and facilities in the United States, South America, Asia, and Europe. BioMarin develops and commercializes innovative biopharmaceuticals for serious, life-threatening rare diseases and medical conditions. BioMarin's core business and research is in enzyme replacement therapies (ERTs). BioMarin is the first company to provide therapeutics for mucopolysaccharidosis type I (MPS I), by manufacturing laronidase (Aldurazyme, commercialized by Genzyme Corporation). BioMarin is also the first company to provide therapeutics for phenylketonuria (PKU).