Vertex Pharmaceuticals Incorporated has announced plans to build a 344,000-square-foot facility in Boston’s Seaport. When completed in 2025, Vertex will occupy 1.9 million square feet of real estate in the Seaport across five sites, making it the largest biotech in Boston in terms of square footage.

The new site, located on Drydock Avenue, will be an expansion of the newly dedicated Jeffrey Leiden Center for Cell and Genetic Therapies I on Northern Avenue. The new building will house labs, offices and manufacturing capabilities for approximately 500 additional employees.

The expansion is being developed in partnership with Related Beal, Boston Real Estate Inclusion Fund and Kavanagh Advisory group. Once this facility is complete, the two buildings will be known as the Leiden Campus.

Vertex and the Vertex Foundation also announced a $50-million commitment to health equity focused on clinical trial diversity, access to quality care and education of the local health care workforce.