Wish All My Readers A Very Happy, Healthy, Peaceful and Prosperous 2020
One of the most complex areas in disease management, is the ailments related to genetic disorders. As these were incurable, over the last four decades, medical researchers are engaged in understanding the complex and intricate process to modify human DNA, using viruses for treatment. This painstaking initiative led to the evolution of ‘gene therapy’ which, according to Mayo Clinic, ‘involves altering the genes inside human body’s cells in an effort to treat or stop the disease.’ In that process, ‘gene therapy’ replaces a faulty gene or adds a new gene, to cure a disease or improve the human body’s ability to safely and effectively treat dreaded ailments, such as cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS, it further added.
Several studies, e.g., one titled ‘Gene therapy on the move,’ published in the EMBO Molecular Medicine highlighted, the first gene therapy clinical trials were initiated more than two decades ago. However, initially many of these were impeded by the occurrence of severe side effects in a few treated patients. Nevertheless, over a period of time, ‘highly efficient gene targeting strategies and site-directed gene editing technologies have been developed and applied clinically.’ With over hundreds of clinical trials to date, gene therapy has moved from a vision to clinical reality – offering a powerful treatment option for the correction of monogenic disorders.
It is believed that in the new millennium, ‘gene therapy’ has emerged as one of biotech’s momentous success stories for curing many genetic disorders, which were once considered incurable. But, the cost of ‘gene therapy’ treatment is indeed jaw-dropping – ranging ‘from about US$ 500,000 to US$ 1.5m. And for treatment over a lifetime, some drugs can cost as much as US$ 750,000 in the first year, followed by US$ 375,000 a year after that – for life.
Since, I have already deliberated on ‘gene therapy’ price and associated moral dilemma that it causes, in this article, I shall focus on different concerns that could pose a threat to its ongoing commercial model. Nevertheless, let’s start with the current scenario on ‘gene therapy,’ for better understanding of the issue.
The current scenario:
According to McKinsey & Company’s October 2019 article - ‘Gene therapy coming of age’ - till 2019, the primary focus in development of ‘gene therapy’ has been on monogenic rare diseases with all currently approved therapeutics falling into this category. It is worth noting, rare diseases tend to have clear genomic targets, as well as, high unmet need in a very small patient population, who have generally been under-served by other, more traditional, therapeutic modalities (including monoclonal antibodies)—making them ideal targets for gene therapies.
More than 150 investigational new drug applications were filed for gene therapy in 2018 alone. With this in mind, McKinsey & Company expects this market to grow significantly, with ten to 20 cell and gene therapy approvals per year over the next five years.
Major ‘gene therapy’ launched:
If one takes a broad look at the ‘gene therapy’ treatments launched so far, which I have compiled from different sources, it may appear as follows.…continue reading…
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