Allergan plc announced that it has entered into a global agreement with AstraZeneca to develop and commercialize ATM-AVI, an investigational, fixed-dose antibiotic combining aztreonam and avibactam. Together, the two companies will evaluate the combination to treat serious infections caused by metallo βlactamase MBL-producing Gram-negative pathogens, a difficult-to-treat sub-type of carbapenem-resistant Enterobacteriaceae (CRE), for which there are currently very limited treatments, thus presenting a new treatment option for patients with MBL-producing pathogens. Under the terms of the agreement, Allergan will maintain commercialization rights in the U.S. and Canada and AstraZeneca will maintain commercialization rights in all other countries.