The newly formed Center for Breakthrough Medicines is building what it claims to be the world’s largest third-party cell and gene production facility at an ex-GSK site in Pennsylvania. For the production of cell and gene therapies, size matters, according to Brian O’Neill, founder of the Discovery Labs. He announced this week at the Phacilitate Conference in Miami, Florida that a 680,000 square-foot facility at a site in King of Prussia, Pennsylvania – a former GSK R&D campus sold to…