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Gene Therapy - Technologies, Markets and Companies
Jain PharmaBiotech, Nov 2009, Pages: 659
Gene therapy can be broadly defined as the transfer of defined genetic material to specific target cells of a patient for the ultimate purpose of preventing or altering a particular disease state. Genes and DNA are now being introduced without the use of vectors and various techniques are being used to modify the function of genes in vivo without gene transfer. If one adds to this the cell therapy particularly with use of genetically modified cells, the scope of gene therapy becomes much broader. Gene therapy can now combined with antisense techniques such as RNA interference (RNAi), further increasing the therapeutic applications. This report takes broad overview of gene therapy and is the most up-to-date presentation from the author on this topic built-up from a series of gene therapy report written by him during the past decade including a textbook of gene therapy and a book on gene therapy companies. This report describes the setbacks of gene therapy and renewed interest in the topic
Gene therapy technologies are described in detail including viral vectors, nonviral vectors and cell therapy with genetically modified vectors. Gene therapy is an excellent method of drug delivery and various routes of administration as well as targeted gene therapy are described. There is an introduction to technologies for gene suppression as well as molecular diagnostics to detect and monitor gene expression.
Clinical applications of gene therapy are extensive and cover most systems and their disorders. Full chapters are devoted to genetic syndromes, cancer, cardiovascular diseases, neurological disorders and viral infections with emphasis on AIDS. Applications of gene therapy in veterinary medicine, particularly for treating cats and dogs, are included.
Research and development is in progress in both the academic and the industrial sectors. The National Institutes of Health (NIH) of the US is playing an important part. As of 30 July 2007, over 1340 gene therapy clinical trials have been completed, are ongoing or have been approved in 28 countries. The total number of human gene transfer trials in the US that are registered with NIH Office of Biotechnology Activities is 885 as of December 2007. A breakdown of these trials is shown according to the areas of application. The largest number of clinical trial protocols is for cancer. The report also identifies the areas for future research.
Since the death of Jesse Gelsinger in the US following a gene therapy treatment, the FDA has further tightened the regulatory control on gene therapy. A further setback was the reports of leukemia following use of retroviral vectors in successful gene therapy for adenosine deaminase deficiency. Several clinical trials were put on hold and many have resumed now. The report also discusses the adverse effects of various vectors, safety regulations and ethical aspects of gene therapy including germline gene therapy.
The markets for gene therapy are difficult to estimate as there is only one approved gene therapy product and it is marketed in China since January 2004. At least two products are expected to be approved by 2008 and gene therapy markets are estimated for the years 2008-2018. The estimates are based on epidemiology of diseases to be treated with gene therapy, the portion of those who will be eligible for these treatments, competing technologies and the technical developments anticipated in the next decades. In spite of some setbacks, the future for gene therapy is bright.The markets for DNA vaccines are calculated separately as only genetically modified vaccines and those using viral vectors are included in the gene therapy markets
The voluminous literature on gene therapy was reviewed and selected 670 references are appended in the bibliography.The references are constantly updated. The text is supplemented with 72 tables and 13 figures.
Profiles of 191 companies involved in developing gene therapy are presented along with 214 collaborations. There were only 44 companies involved in this area in 1995. In spite of some failures and mergers, the number of companies has increased more than 4-fold within a decade. These companies have been followed up since they were the topic of a book on gene therapy companies by the author of this report. John Wiley & Sons published the book in 2000 and from 2001 to 2003, updated versions of these companies (approximately 160 at mid-2003) were available on Wiley's web site. Since that free service was discontinued and the rights reverted to the author, this report remains the only authorized continuously updated version on gene therapy companies.
Benefits of this report
- Up-to-date on-stop information on gene therapy with 72 tables and 13 figures
- Evaluation of gene therapy technologies
- 700 selected references from the literature
- Estimates of gene therapy markets from 2008-2018
- Profiles of 191 companies involved and collaborations in this area
Who should read this report?
- Biotechnology companies developing gene therapy
- Academic institutions doing research in gene therapy
- Drug delivery companies
- Pharmaceutical companies interested in gene therapy
- Gene therapy companies
- Venture capital and investment companies
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