Product-on-stopper (POS) defects can create significant quality and operational challenges in sterile fill-finish manufacturing, contributing to product rejection, reduced yield, costly re-inspections, and potential supply impacts. This case study explores how Bora Pharmaceuticals used a data-driven continuous improvement approach to investigate and address persistent POS defects in a lyophilized drug product program.
Sterile fill-finish of lyophilized products presents complex technical and operational challenges, where even low-frequency defects can have significant implications for product quality, manufacturing efficiency, and yield. When recurring POS defects affected an ongoing sterile fill-finish program at Bora’s Baltimore, Maryland facility, a cross-functional team initiated a deeper investigation to identify contributing factors and develop a solution.
This case study examines how Bora combined manufacturing data, detailed process observations, and high-speed camera analysis to better understand the factors contributing to POS defects. The investigation informed targeted process improvements designed to address the underlying causes and strengthen filling performance.
Readers will also learn how the resulting process enhancements reduced POS defects, improved batch yields, and decreased the product loss and resources associated with deviations and re-inspections. The case study demonstrates how cross-functional collaboration and data-driven continuous improvement can support stronger performance in complex sterile fill-finish programs.
