AEterna Zentaris Inc is a biopharmaceutical company commercializing & developing therapeutics & diagnostic tests. The company's product, Macrilen (macimorelin), is the oral test indicated for the diagnosis of adult growth hormone deficiency (GHD). Macrilen is marketed in the U.S. through a license agreement with Novo Nordisk & the company receives royalties on sales. Aeterna owns all rights to macimorelin outside of the U.S. & Canada. It is leveraging the clinical success & safety profile of macimorelin to develop it for the diagnosis of child-onset GHD. The company's geographical segments include Switzerland, Ireland, Denmark, and others, of which nearly all of its revenue comes from Switzerland.