Pharmaceutical giant Merck is buying Verona Pharma, a company that concentrates its efforts on respiratory diseases, in an approximately $10 billion deal.

Merck & Co. is acquiring Verona Pharma PLC in a $10 billion deal that will expand the pharmaceutical giant’s portfolio of chronic obstructive pulmonary disease treatments with Verona Pharma’s Ohtuvayre.

Merck & Co. has agreed to acquire Verona Pharma for $10 billion, the companies said, in a deal designed to expand the pharma giant’s pipeline and portfolio of cardio-pulmonary disease treatments.