Concerns for safety in administration of injectable drug products have escalated in recent years. As a result, scrutiny of administration practices has increased. Pharmaceutical manufacturers are placing greater emphasis on providing the best patient and caregiver experience as well as improving the convenience of drug administration. In fact, many drugs that are regularly administered for chronic conditions are now being offered for at-home preparation and administration. These trends highlight the importance of providing therapies that are not only effective, but…
Manufacturing
Efficient Aggregate Removal from Impure Pharmaceutical Active Antibodies
Polishing with membrane chromatography (MC) has achieved acceptance as state-of- the-art technology for charged impurities. Traditionally, anion-exchange (AEX) and cation-exchange (CEX) membrane chromatography have been used to remove charged contaminants such as host-cell proteins (HCPs), recombinant DNA, protein A, endotoxins, and viruses. In monoclonal antibody (MAb) processes, polishing steps usually follow a protein A affinity column step. In some cases, CEX capture is applied, either with at least one AEX or a combined AEX and CEX step. The latter may…
Combination Products for Biotherapeutics
Combination products (see the “Definition†box) are experiencing steady growth in the pharmaceutical industry. According to one report, about 30% of products currently in development are combination products (1). Expanding interest in such products can be attributed to manufacturers’ need to generate new market value for current products that will soon lose patent, requirements for long-term patient care, pressure to reduce healthcare costs, and consumer interest in localized drug delivery with improved therapeutic effectiveness (2). During the 2008…
Questions to Consider When Thinking About Companion Tests
Personalized medicine is a catch phrase of the 21st century — and with good reason. Advances in genetics and biochemistry promise to tease apart factors that explain why some patients benefit dramatically from a therapy whereas others receive no benefit at all. They also help explain side-effect profiles. To accomplish such lofty goals, drug makers are increasingly partnering with diagnostics companies to develop companion biomarkers. But these companies operate in very different business and regulatory environments, so partnerships can be…
Review, Approval, and Marketing of Biosimilars in the United States
Development, testing, review, approval, and marketing of biosimilar drugs in the United States presents unique safety and regulatory challenges (1). By contrast with traditional small-molecule drugs, biologics derive from sources such as genetically engineered cell lines, plasma, and tissue specimens (2,3). Patents on first-generation biologics approved and marketed in the United States have begun to expire, thereby opening the market to less-expensive “generic†versions. The complexity of biologic drugs and the specificity of their source materials, however, make…
Stability Considerations for Biopharmaceuticals: Overview of Protein and Peptide Degradation Pathways
To ensure product safety and efficacy, protein therapeutics must meet defined quality characteristics immediately after manufacture as well at the end of their designated shelf lives. Many physical and chemical factors can affect the quality and stability of biopharmaceutical products, particularly after long-term storage in a container–closure system likely to be subject to variations in temperature, light, and agitation with shipping and handling. Compared with traditional chemical pharmaceuticals, proteins are considerably larger molecular entities with inherent physiochemical complexities, from their…
Review, Approval, and Marketing of Biosimilars in the United States
During the past 30 years, advances in medicine and pharmaceutical research generated a new class of drugs called biologics. These drugs are complex proteins, carbohydrates, or other large molecules derived from biological sources (1). By contrast with more traditional pharmaceuticals (small-molecule drugs), biologics are not synthesized chemically from less complex components, but rather are derived from or manufactured using living organisms or extracted tissue (2) Biologics make up a small but significant percentage of the overall pharmaceutical market.…
The Human Factor in Facility Design Innovation
Bioprocess and pharmaceutical production environments must be well designed to meet strict cleanroom and quality assurance (QA) standards and productivity requirements. Managers may also consider innovative ways to enhance the design of these environments to enable the people critical to their companies’ success to be more productive and effective. In today’s work culture, countless hours can be lost to poor teamwork and ineffective communication. CGMP environments present additional, unique challenges to human interaction because of their built-in process and protocol…
The Dinosaurs Reborn: Evaluating Stainless Steel and Disposables in Large-Scale Biomanufacturing
Although a number of biomanufacturers have adopted disposable technologies for small-scale process design, there has been considerable debate over the role of single-use systems in large-scale biopharmaceutical manufacturing— particularly in retrofitting facilities. Some experts have gone so far as to suggest that large-scale stainless steel fermentors are “dinosaurs,†with their large capacities, long installation lead times, and low flexibility. I advocate a systematic approach to look holistically at possible retrofit technologies in existing (stainless steel) facilities, with particular…
Single-Use Systems As Principal Components in Bioproduction
Single-use systems (SUS) have become an accepted component of animal-cell–based bioproduction. No longer a merely exciting possibility, they have emerged as a significant and growing resource for companies to use from process development to manufacturing of approved products. Having been examined for years in less regulated environments, off-the-shelf SUS are now in regular use to some extent in nearly every segment of the production train by contract manufacturing organizations (CMOs) and biopharmaceutical companies in mid-scale production applications. For…