Pfizer committed to building a $100 million gene therapies plant in North Carolina and in exchange, North Carolina committed to providing the drugmaker with a quarter-million dollars’ worth of help.

Pfizer will expand an 11,000-square-foot plant in Sanford, North Carolina that it acquired last year when it bought gene therapies biotech Bamboo Therapeutics in a deal valued at up to $688 million. Bamboo bought the facility last year from the University of North Carolina about the time that Pfizer made is initial investment in the company.

The drugmaker considered building a facility in Massachusetts where it has other research and manufacturing operations but decided on North Carolina where it will receive a $250,000 performance grant from the state for the project and its 40 jobs.