Pharming Group N.V., a biopharmaceutical company, develops and commercializes protein replacement therapies and precision medicines for the treatment of rare diseases in the United States, Europe, and internationally. The company's commercialized product is RUCONEST, a plasma-free rhC1INH protein replacement therapy for the treatment acute hereditary angioedema (HAE) attacks. It also engages in the development of leniolisib for the treatment of activated phosphoinositide 3-kinase delta syndrome; OTL-105, an investigational ex-vivo autologous hematopoietic stem cell gene therapy for the treatment of HAE; and alpha-glucosidase therapy for the treatment of Pompe and fabry diseases. The company has a development collaboration and license agreement with Novartis; and a strategic collaboration agreement with Orchard Therapeutics plc for research, development, manufacturing, and commercialization of OTL-105. Pharming Group N.V. is headquartered in Leiden, the Netherlands.