Little more than a month after selling a narcolepsy drug from its portfolio, Jazz Pharmaceuticals plc has replaced it with another. The company entered an exclusive development and commercialization rights agreement Sumitomo Pharma Co. Ltd.’s candidate for treating narcolepsy along with idiopathic hypersomnia and other sleep disorders. Sumitomo retains the rights for Japan, China and certain other Asia-Pacific countries and regions while Jazz gets the rights to everywhere else.