Drug Repurposing for Faster, Greener, and Affordable Treatments

11 min read

Created with DALL-E

Unlock drug repurposing potential: 10 facts on orphan drug acceleration & cost reduction in new treatments

Imagine a world where we can tap into the hidden potential of existing medications, uncovering new uses that could save lives and improve patient outcomes, all while reducing the time and costs associated with traditional drug development. 

In the dynamic landscape of medical innovation, there’s a groundbreaking approach taking center stage, transforming the way we think about drug development and healthcare.

Sounds almost too good to be true, right? Well, the reality is closer than you think, and it’s called drug repurposing.

Executives are always on the lookout for the next big thing, that cutting-edge insight that will set them apart from their peers and elevate their organization to new heights. In this article, we delve into 10 fascinating facts about drug repurposing that are sure to make an impression. These nuggets of knowledge not only showcase the incredible potential of repurposing existing medications but also provide compelling talking points to discuss with colleagues and industry peers.

Prepare to be astounded as we delve into the area of drugs repurposing, where rapid approval can save both time and resources, and how the rise of precision medicine is opening up new avenues for personalized treatment. Learn about the untapped potential of existing drug libraries and how the success of repurposed medications in treating uncommon diseases is changing people’s lives.

Upon concluding this article, you will possess significant knowledge regarding the efficacy of drug repurposing, enabling you to make meaningful contributions to the ongoing discourse surrounding the trajectory of the life science. 

Let’s explore the exciting possibilities of the medicines we currently have and how drug repurposing can transform healthcare for the better!

Fact 1: Accelerated Approval of Repurposed Drugs 

The faster approval procedure is one of the most significant benefits of drug repurposing. Because repurposed drugs have previously been subjected to comprehensive safety and effectiveness testing during their initial development, regulatory agencies are frequently able to speed their review and clearance for new therapeutic indications. This faster approach shortens the time it takes to bring new drugs to market, allowing patients to get potentially life-saving cures sooner.Many repurposed drugs have already been shown to be safe and effective for their original purposes, indicating that they have a well-established safety profile. This knowledge allows researchers to focus on showing the medical’s efficacy for the new indication, saving considerable time and money when compared to developing a new drug from the ground up. Additionally, repurposed medications may benefit from existing manufacturing processes and distribution networks, which can help to speed up the process of bringing a novel treatment to patients.Despite these benefits, various obstacles must be overcome to enable a successful drug repurposing. For example, for the new indication, researchers must find the suitable patient population and dosing regimen, which may necessitate further clinical trials. In order to stimulate investment in repurposing programs, intellectual property rights and financial incentives must be carefully evaluated.

Overall, faster approval of repurposed drugs has the potential to significantly improve public health outcomes and address unmet medical needs more effectively.

Reference: Pushpakom, S., et al. (2019). Drug repurposing: progress, challenges and recommendations. Nature Reviews Drug Discovery, 18(1), 41–58

Fact 2: Reduced Costs of Drug Development 

Due to the enormous investment in research and development that has already been made on these compounds, drug repurposing offers a more affordable option to traditional drugs development. The creation of new pharmaceuticals can be a time-consuming and expensive process, lasting years and costing billions of dollars. Because the drug’s safety and efficacy for its original indication have already been proved, repurposing existing drugs can significantly cut these expenses.In addition, repurposed pharmaceuticals may benefit from existing manufacturing methods, which can further reduce the financial burden of bringing a novel medication to market. Furthermore, as noted in Fact 1, the faster approval procedure for repurposed medications can assist reduce the costs associated with regulatory submissions and approvals.However, while repurposing a medicine, it is critical to examine the intellectual property environment and market exclusivity, as these factors can effect the financial sustainability of the repurposing project. In some situations, a repurposed drug’s patent protection may be limited or expired, discouraging investment in its continuing research. To solve this issue, governments and regulatory authorities might put in place incentives and initiatives that encourage drug repurposing for new therapeutic indications.

In conclusion, drug repurposing provides a cost-effective approach for generating new medicines, particularly for rare diseases and other areas of unmet medical need, by leveraging existing R&D investments.

Reference: Ashburn, T. T., & Thor, K. B. (2004). Drug repositioning: identifying and developing new uses for existing drugs. Nature Reviews Drug Discovery, 3(8), 673–683

Fact 3: Proven Success in Rare Diseases 

Drug repurposing has shown significant effectiveness in the treatment of uncommon diseases, providing new alternatives for patients with restricted therapy options. One famous example is the repurposing of sildenafil, a medicine originally intended to treat erectile dysfunction, for use in pulmonary arterial hypertension (PAH). The discovery of sildenafil’s effectiveness in treating PAH has had a tremendous influence on the lives of patients suffering from this rare and often severe illness.

PAH is characterized by excessive blood pressure in the arteries of the lungs, which can lead to heart failure and premature mortality. Prior to the repurposing of sildenafil, the therapeutic choices for PAH were limited, and the prognosis for patients was frequently poor. Sildenafil acts by inhibiting the enzyme phosphodiesterase-5 (PDE5), causing blood vessels to relax and the pulmonary arterial pressure to fall.

This success demonstrates the potential of current medications to meet unmet medical needs in uncommon disorders. Furthermore, it emphasizes the significance of knowing the underlying molecular mechanisms and pathways implicated in both the original indication and the new treatment target. This knowledge can assist find potential new uses for current medications and facilitate their repurposing for the benefit of patients with uncommon disorders.

In conclusion, repurposing existing medications has proven to be a successful technique in addressing uncommon diseases, delivering novel and effective treatments for patients with restricted options. The story of sildenafil for PAH is a powerful example of the potential influence of drug repurposing on the lives of patients with uncommon conditions.

Reference: Poitras EL, Gust SL, Kerr PM, Plane F. Repurposing of the PDE5 Inhibitor Sildenafil for the Treatment of Persistent Pulmonary Hypertension in Neonates. Curr Med Chem. 2021;28(12):2418–2437

Fact 4: Untapped Potential in Existing Drug Libraries 

Existing drug libraries have huge untapped potential, with thousands of licensed medications awaiting investigation for new therapeutic applications. Many approved medications have complicated pharmacological profiles that may affect many biological targets and pathways, making repurposing for new indications possible. 

The challenge is recognizing these possible new uses and leveraging the latent potential of existing drugs libraries for patient benefit. Researchers may now evaluate current medications for new therapeutic applications more efficiently because to advances in computational and experimental methodologies.

 Computational techniques such as molecular docking, machine learning, and network analysis, for example, can aid in the prediction of new drug-target interactions and the identification of possible repurposing candidates. Furthermore, high-throughput experimental approaches like phenotypic screening and chemo-genomics can provide useful insights into the biological effects of existing medications and aid in the discovery of new therapeutic uses. 

Academic researchers, pharmaceutical corporations, and other stakeholders must work together to realize the untapped potential of existing drug libraries. These agreements can help accelerate the development of new therapeutic applications for authorized medications and enhance public health outcomes by exchanging data, resources, and expertise. 

To summarize, the untapped potential in existing drug libraries represents an enormous opportunity for therapeutic discovery and development. Researchers can uncover potential therapeutic applications for current medications and meet unmet medical needs more efficiently by utilizing breakthroughs in computational and experimental approaches and fostering collaboration among stakeholders.

Reference: (4) Li, J., et al. (2016). A survey of current trends in computational drug repositioning. Briefings in Bioinformatics, 17(1), 2–12

Fact 5: Precision Medicine and Drug Repurposing 

The emergence of precision medicine has facilitated the exploration of drug repurposing, as genetic and molecular information can enable the identification of specific patient subgroups that could potentially derive therapeutic benefits from pre-existing pharmaceuticals. The objective of precision medicine is to customize medical interventions to suit the specific needs of individual patients, taking into account their distinct genetic, environmental, and lifestyle characteristics. This approach holds promise for delivering more personalized and efficacious treatments.

The repurposing of drugs can serve as a crucial component in the progression of precision medicine, given that pre-existing drugs may possess unexplored capabilities for particular subgroups of patients. Through the examination of extensive molecular and genetic data, scientists can detect distinct patient subgroups that could exhibit varying responses to a medication, thereby revealing novel therapeutic indications and broadening the scope of eligible patients for a specific therapy.

Genomic profiling has resulted in the identification of patient subgroups that possess particular genetic mutations that render them sensitive to currently available drugs. The identification of molecular biomarkers in the field of oncology has facilitated the repurposing of targeted therapies for novel patient populations, resulting in enhanced clinical outcomes and individualized treatment approaches.

In addition, the progressions in the field of bioinformatics and the amalgamation of extensive data sets have eased the creation of computational methodologies for the repurposing of drugs within the framework of precision medicine. The aforementioned methodologies have the potential to anticipate fresh drug-target associations, detect specific patient subgroups that could derive advantages from pre-existing medications, and unveil innovative therapeutic utilities for sanctioned drugs.

The integration of drug repurposing into precision medicine initiatives necessitates the imperative collaboration among stakeholders in academia, industry, and regulatory agencies. Through the sharing of data, resources, and expertise, collaborative efforts can expedite the discovery of innovative therapeutic applications for pre-existing drugs, enhance patient outcomes, and propel the progress of precision medicine.

In conclusion, the emergence of precision medicine has opened up new possibilities for drug repurposing, as genetic and molecular data can be used to pinpoint patient subpopulations that may profit from current treatments. The utilization of precision medicine and the promotion of stakeholder collaboration can be instrumental in the advancement of personalized healthcare and the enhancement of patient outcomes through drug repurposing.

 Reference: Corsello, S. M., et al. (2017). The Drug Repurposing Hub: a next-generation drug library and information resource. Nature Medicine, 23(4), 405–408

Fact 6: Repurposing Success in Oncology 

Oncology has observed a multitude of triumphs in the realm of drug repurposing, with a particularly noteworthy instance being the utilization of thalidomide in the management of multiple myeloma. Thalidomide, an initial sedative medication, was administered to expectant mothers for alleviating morning sickness during the 1950s and 1960s. However, it was subsequently discovered to result in significant congenital abnormalities. As a result, it was removed from the market in numerous nations.

After several decades, scholars unveiled that thalidomide had antiangiogenic characteristics, which implies that it had the potential to hinder the development of fresh blood vessels. The aforementioned characteristic rendered it a compelling contender for cancer therapy, given that neoplasms are dependent on vasculature for sustenance and proliferation. 

During the latter part of the 1990s, a clinical trial was conducted to establish the antitumor efficacy of thalidomide in patients diagnosed with refractory multiple myeloma, a form of hematological malignancy. Subsequently, thalidomide and its analogues have been incorporated as a crucial component of the therapeutic protocol for multiple myeloma, leading to enhanced survival outcomes for individuals afflicted with this debilitating ailment.

Even medications with a problematic past may have the potential to be repurposed for use in treating new conditions, as demonstrated by the successful treatment of multiple myeloma with thalidomide in recent years. This illustrates the significance of continuing research into the underlying mechanisms of action for medications that have been approved for use as well as those that have been withdrawn from the market, as these mechanisms may be the key to opening up new therapeutic uses in oncology and other areas of study.

Reference: Singhal, S., et al. (1999). Antitumor activity of thalidomide in refractory multiple myeloma. New England Journal of Medicine, 341(21), 1565–1571

Fact 7: Repurposing Reduces Time to Market

The utilization of pre-existing drugs has the potential to substantially decrease the duration required for the introduction of novel therapies to the market. According to a research study, the median duration for repurposed drugs to attain market approval was 6.5 years, in contrast to 13.5 years for new chemical entities. 

The shortened duration of the timeline can be ascribed to various factors such as the pre-existing knowledge of the drug’s safety profile, established manufacturing procedures, and regulatory approvals that are already in place.Drug repurposing presents a more efficient and cost-effective alternative to the conventional de novo drug discovery process. The abbreviated development timeline has the potential to expedite patient access to life-saving therapies, thereby mitigating unfulfilled medical necessities and enhancing public health results.

It is imperative to acknowledge that the efficacy of drug repurposing is contingent upon the identification of suitable candidates and a comprehensive comprehension of their mechanisms of action. The successful repurposing of drugs necessitates rigorous scientific inquiry and a cooperative strategy that involves academia, industry, and regulatory bodies to guarantee the safety and efficacy of these drugs for their novel indications.

In short, repurposing of drugs has the potential to considerably decrease the duration required for introducing a novel treatment to the market. This approach to drug development is more streamlined and economical, and has the potential to benefit patients and healthcare systems in a significant manner.

Reference: (7) Nosengo, N. (2016). Can you teach old drugs new tricks? Nature, 534(7607), 314–316

Fact 8: Environmental Benefits of Drug Repurposing 

The repurposing of drugs can yield favorable environmental outcomes by mitigating the necessity for supplementary resource-intensive research and manufacturing procedures that are typically linked to the development of novel drugs. The traditional process of drug development is frequently linked to noteworthy environmental expenses, such as energy usage, the release of greenhouse gases, and the generation of waste, all of which can potentially exacerbate climate change and other environmental concerns. 

Through the repurposing of pre-existing medications, researchers can utilize the already established understanding of a drug’s safety, pharmacokinetics, and manufacturing procedures, ultimately diminishing the necessity for supplementary resource-intensive research and development. The aforementioned phenomenon has the potential to result in a decline in energy consumption, a decrease in waste generation, and a reduction in greenhouse gas emissions when contrasted with the creation of novel chemical entities.

Apart from the immediate ecological advantages, repurposing of drugs has the potential to advance the principles of sustainable drug development and green chemistry. Drug repurposing is in line with the objectives of green pharmaceuticals, as it emphasizes the enhancement of current drugs and the reduction of harmful chemicals and procedures. This approach leads to a more ecologically sustainable and friendly drug development environment.

In summary, the repurposing of drugs presents a promising opportunity for expediting drug development and minimizing expenses, while also yielding favorable environmental outcomes. This renders it a compelling approach for the sustainable advancement of novel therapies.

Reference: Wynendaele E., Furman C., Wielgomas B., Larsson P, et al., Sustainability in drug discovery, Medicine in Drug Discovery,Volume 12, 2021, 100107, ISSN 2590–0986

Fact 9: Collaboration Between Academia and Industry 

Drug repurposing encourages collaboration between academia and the pharmaceutical industry, as both entities can contribute their unique expertise and resources to identify new therapeutic applications for existing medications (9). Academic institutions often possess a wealth of knowledge on disease mechanisms and drug targets, while the pharmaceutical industry has experience in drug development, clinical trials, and regulatory processes.

By working together, academia and industry can combine their strengths to streamline the drug repurposing process and increase the likelihood of identifying promising candidates for new indications. This collaborative approach can also foster innovation and knowledge-sharing, leading to the discovery of novel therapeutic applications and the advancement of medical science.

One notable example of such collaboration is the Repurposing Drugs in Oncology (ReDO) project, which aims to identify existing drugs with potential anticancer properties and promote their clinical use for cancer treatment (9). This project involves researchers from various academic institutions, as well as experts from the pharmaceutical industry, working together to accelerate the drug repurposing process in oncology.

In conclusion, drug repurposing can foster collaboration between academia and industry, bringing together their unique expertise and resources to identify new therapeutic applications for existing medications and accelerate the drug development process.

Reference: Pantziarka P, Bouche G, Meheus L, Sukhatme V, Sukhatme VP, Vikas P. The Repurposing Drugs in Oncology (ReDO) Project. Ecancermedicalscience. 2014 Jul 10;8:442

Fact 10: Drug Repurposing and the COVID-19 

Existing medications such as Remdesivir and dexamethasone have demonstrated therapeutic potential against the COVID-19 virus (10), highlighting the significance of drug repurposing in light of the pandemic. Remdesivir, an antiviral medicine primarily developed to treat Ebola and other viral infections, was found to be successful in a clinical trial in shortening the recovery time for hospitalized COVID-19 patients.

Dexamethasone, a commonly used corticosteroid, has been demonstrated to decrease mortality rates in COVID-19 patients who are so critically ill that they need oxygen or mechanical ventilation. The pandemic demonstrated the potential of drug repurposing as a strategy to rapidly respond to growing global health problems, as these repurposed treatments were rapidly evaluated and deployed.

Drug repurposing proved effective in combating the COVID-19 pandemic, demonstrating its utility against other infectious diseases and public health situations. Research into new medicines can be accelerated, and lives may be saved, if scientists can make better use of already-existing pharmaceuticals.

In conclusion, the global health emergency posed by the COVID-19 pandemic has highlighted the value of drug repurposing as a means of swiftly responding to new threats. Remdesivir and dexamethasone are only two examples of repurposed medications that have shown promise in combating infectious diseases and other public health crises. This underscores the importance of maintaining our research and investment in medicine repurposing so that we are poised to meet the health concerns of the future.

Reference: (10) Beigel, J. H., et al. (2020). Remdesivir for the treatment of Covid-19 — final report. New England Journal of Medicine, 383(19), 1813–1826.

Conclusions

In the pharmaceutical industry, drug repurposing is a topic of great interest due to its potential to yield remarkable outcomes. The article delves into the various possibilities that this approach presents. 

Understanding the main advantages and achievements of this strategy aids in decision-making and helps spot chances to meet unmet medical requirements, offer access to potentially life-saving therapies more swiftly, and enhance public health outcomes.

 Drug repurposing has emerged as a promising approach to accelerate drug development and reduce costs. In this regard, we present ten pivotal points that highlight the effectiveness and significance of drug repurposing in the pharmaceutical industry.

  • Accelerated Approval: Repurposing existing medications leads to faster approvals, as these drugs have already undergone extensive safety and efficacy testing.
  • Cost Reduction: Drug repurposing significantly reduces development costs, leveraging prior investments in research and development.
  • Success in Rare Diseases: Repurposed drugs have been effective in treating rare diseases, such as sildenafil for pulmonary arterial hypertension.
  • Untapped Potential: Thousands of approved drugs in existing libraries await exploration for new therapeutic applications.
  • Precision Medicine: Genetic and molecular data can identify patient subpopulations who may benefit from repurposed medications.
  • Oncology Success: Drug repurposing has seen numerous successes in oncology, including the use of thalidomide for multiple myeloma.
  • Time to Market: Repurposed drugs reach the market faster, with a median time of 6.5 years compared to 13.5 years for new chemical entities.
  • Environmental Benefits: Drug repurposing reduces the need for additional resource-intensive research and manufacturing processes, promoting sustainable drug development.
  • Academia-Industry Collaboration: Drug repurposing fosters collaboration between academia and the pharmaceutical industry, combining expertise and resources to identify new therapeutic applications.
  • COVID-19 Pandemic: The successful deployment of repurposed drugs during the COVID-19 pandemic highlights the potential of this approach in addressing infectious diseases and public health emergencies.
Flavio Aliberti Flavio Aliberti brings with him a 25-year track record in consulting around business intelligence, change management, strategy, M&A transformation, IT and SOX auditing for high regulated domains, like Insurance, Airlines, Trade Associations, Automotive, and Pharma. He holds an MSc in Space Aeronautic Engineering from the University of Naples and an MSc in Advanced Information Technology and Business Management from the University of Wales.

Leave a Reply

Your email address will not be published. Required fields are marked *