Cherie L. Green

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Flow cytometry is a powerful and flexible analytical tool used during all stages of drug development. While substantial effort is invested in development and validation of analytical methods, instrument validation is often neglected. Flow cytometers are evolving at a pace that surpasses the protracted timeline of drug discovery and development. Therefore,(More)
The measurement of the binding of a biotherapeutic to its cellular target, receptor occupancy (RO), is increasingly important in development of biologically-based therapeutic agents. Receptor occupancy (RO) assays by flow cytometry describe the qualitative and/or quantitative assessment of the binding of a therapeutic agent to its cell surface target. Such(More)
Peripheral blood stem cells (PBSC) obtained from granulocyte-colony stimulating factor (G-CSF)-mobilized donors are increasingly used for allogeneic transplantation. Despite a 10-fold higher dose of transplanted T cells, acute graft-versushost disease (GVHD) does not develop in higher proportion in recipients of PBSC than in recipients of marrow. T cells(More)
Flow Cytometers are key devices used to monitor the composition of cells in the blood in the setting of a variety of disease states. Recent advances have produced a range of instruments that range from simple desktop-type devices to multi-laser platforms that allow for high complexity measurements. This variety of instrumentation makes the technology(More)
The objective of this manuscript is to present an approach for evaluating specimen stability for flow cytometric methods used during drug development. While this approach specifically addresses stability assessment for assays to be used in clinical trials with centralized testing facilities, the concepts can be applied to any stability assessment for flow(More)
Receptor occupancy measurements demonstrate the binding of a biotherapeutic agent to its extra-cellular target and represent an integral component of the pharmacodynamic (PD) portfolio utilized to advance the development and commercialization of a therapeutic agent. Coupled with traditional pharmacokinetic (PK) assessments derived from serum drug(More)
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