David Cirelli is an Associate Research Fellow and Group Leader in the Analytical Research and Development department within Pfizer’s BioTherapeutics Pharmaceutical Sciences organization. The group is responsible for development and validation of biological and impurity assays, as well as product characterization and process development activities in support of Pfizer’s biotherapeutics, vaccine, and gene therapy portfolio. David has held previous positions at Wyeth BioPharma and Wyeth Research. David earned his MS in Quality Assurance & Regulatory Affairs from Temple University, School of Pharmacy and his Bachelor’s degrees in Biology and Exercise Sciences from Gettysburg College.