Tag: <span>standards</span>

The Lentiviral Vector Reference Working Group (LVRWG) was created at the conclusion of a meeting organized by The Williamsburg BioProcessing Foundation in June 2002, in conjunction with the American Society of Gene Therapy (ASGT) annual conference. The meeting participants were gathered to evaluate the need for developing reference material to ensure comparability of lentiviral and retroviral vectors, in a similar spirit to the Adenovirus Reference Material program that had just been completed. The concensus at the conclusion of this meeting was that the diversity in the lentiviral vector field, which includes vectors derived from different parental viruses and with various designs, does not allow for identification of a single reference material that would benefit more than a single or very few investigators…

Viral Reference Materials Viral Vectors

Although biological products are being licensed at a fairly steady pace, the cost to develop each product can be incredibly high, and far too many products with very little chance of success are entering clinical trials. The cost of developing a biological product is now estimated to be as high as $1.7 billion. This is truly a staggering figure that would seem to prevent all but the strongest company from attempting such a gamble. However, this number includes the cost of all the products that didn’t make it through pre-clinical development, or which entered clinical trials and failed for any number of reasons…

Biologics Production Regulatory

A prerequisite for producing medicinal products is ensuring their quality and safety. This requires appropriately controlled and standardised manufacture and testing procedures that result in consistent potency, safety, and efficacy. Assuring the quality and safety of gene therapy products in particular presents a great challenge because they are cell-based, multi-gene products which include viral and therapeutic proteins as well as modified cells. Although more than 860 gene transfer clinical trials are in progress and the first gene therapy product is already on the market (in China), the development of reference materials for gene therapy products is at an early stage with only a few accessible reference materials. Standardisation of gene therapy products to ensure their quality and safety is clearly necessary and has become increasingly important. Standardisation and other issues specifically related to gene therapy products are discussed in this article…

Cell & Gene Therapy Viral Reference Materials

Currently, the U.S. Food and Drug Administration (FDA) recommends DNA sequencing for the structural characterization of gene transfer viral vectors in investigational New Drug Applications (INDs). While FDA provides guidelines on what should be sequenced in regard to these vectors, it provides little insight — beyond GLP/GMP (GxP) guidelines — into how the finalized sequence data should be obtained. There is presently no provision for determining which sequencing methodology (or methodologies) is most appropriate for obtaining a completed sequence characterization for each of the different vector classes, and there is no standard that outlines what DNA sequencing-specific criteria the data and data collection processes should meet in order to guarantee that the sequence is 99.99% accurate…

Nucleic Acids Research Uncategorized Viral Vectors

The United States Pharmacopeia (USP) is a 184-year-old organization that has been in the forefront of technology since its inception. From publishing a manual about how to prepare therapeutic potions, USP has evolved into a compendium of standards and information on manufactured pharmaceutical products, with more than 4,000 monographs covering drug substances and biologics, and their dosage forms, excipients, and nutritional supplements. It is not surprising that the USP initiative in cell and gene therapy and tissue engineering has closely followed the emergence of these technologies…

Cell & Gene Therapy Regulatory Risk Analysis and Management

The safety of our food supply is a major public health concern for consumers, government regulatory agencies, and the food industry. Earlier generations may recall when fresh produce was largely domestic and seasonal. Today we live in a global marketplace, where fresh fruits and vegetables may be on the vine overseas one day and on our grocer’s shelf the next. Although this has provided more yearround variety of foods for the consumer, a lack of uniformity in established agricultural standards and practices among international trading partners (e.g., sanitary issues and inspections) may ultimately lead to deleterious health effects. This is evident in the number of food-borne illness outbreaks and associated deaths. Negative economic consequences also result through lost wages and productivity, and health care costs. The impact can be far greater in developing nations. Therefore, refining domestic and international food safety policies is at the forefront of many government agencies’ efforts toward protecting the public health. Reducing the number of such incidences has become a priority for government regulatory agencies and the food industry…

Regulatory

Through the tremendous efforts of the Adenovirus Reference Material Working Group (ARMWG), an adenovirus reference material (ARM) is now available from the American Type Culture Collection (ATCC). The history and progress of the ARM production and characterization has been presented at many meetings and published in numerous journal articles. Although general statements have been made regarding how the ARM should be used, there is no formal directive or specific set of instructions detailing its application in the field. The goals of this paper are (1) to briefly review the objectives for development and implementation of the ARM, (2) to describe a critical assumption necessary to meet those objectives, (3) to outline specific approaches for using the ARM, and (4) to highlight the need for a working group to address the issues raised in the process…

Viral Reference Materials

With the continued progress of adenoviral vectors in gene therapy studies it is increasingly evident that a more formalized approach to the characterization and analysis of these viral vectors is urgently needed. Today, adenoviral vectors are beginning to be considered “well characterized biologics,” as shown by numerous publications describing sophisticated analytical approaches for recombinant adenovirus product candidates. Because the analytical definitions of adenoviral vectors currently lack comparison to a common standard, the problem for regulatory agencies is how to objectively evaluate safety in relation to the administered dose. This well-recognized need for an adenovirus standard has been addressed by a consortium of representatives from regulatory agencies, industry, and academic organizations — the Adenoviral Reference Material (ARM) Working Group. Its work has come to fruition in the recent public availability of the ARM, a purified wild type 5 adenovirus. Many aspects of the history, production, and characterization of the ARM have been published in detail…

Regulatory Viral Reference Materials Viral Vectors

Long-term growth of the biopharmaceutical industry is increasingly relying on outsourcing to overcome the current capacity constraints, especially for monoclonal antibody production. Companies are often reluctant to commit to building multimillion dollar manufacturing facilities for potential products with no guarantee of approval. Therefore to offset risks, companies will enter into contract manufacturing arrangements…

Biologics Production Manufacturing Risk Analysis and Management

Tissue engineering is an emerging area of biotechnology that will provide replacement tissues for patients, as well as complex, functional biological systems for research and testing in the pharmaceutical industry. A new research area of tissue engineering is the investigation of how living cells interact with and respond to synthetic biomaterial surfaces. The clinical developments that underlie that research include a number of novel tissue-engineered medical products (TEMPs)…

Biologics Production Research