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‘Repurposing’ Older Drugs: Has The Process Started Rolling?

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On October 22, 2015, BBC News reported, “The world’s largest clinical trial to examine whether aspirin can prevent cancers returning has begun in the United Kingdom (UK).”

About 11,000 people, who have had early bowel, breast, prostate, stomach and esophageal cancer will be involved in this study with one tablet a day dosage for five years. This trial is being funded by ‘The Charity Cancer Research, UK’ and ‘The National Institute for Health Research (NIHR).’

The scientists feel, if it works, this ‘repurposing’ of an older and much-known drug would be a “game-changing” one. It would then be able to provide a cheap and effective alternative to prevent recurrence of cancer to a large number of cancer survivals. Interestingly, no global pharma players are involved in this cancer prevention research, as yet. 

Aspirin was developed by Bayer way back in 1897 for pain and inflammation. Thereafter, the scientists found a ‘repurpose’ in its use as an anti-platelet drug for treating and preventing heart attacks and strokes.

Similarly, the anti-inflammatory drug Ibuprofen, which was developed by Boots in the 1960s for the treatment of rheumatoid arthritis, is now showing promises that it can help protect against Parkinson’s disease.

Again, a number of studies claim that statins, a cholesterol-reducing drug, can help prevent Alzheimer’s Disease, resulting in low levels of beta-amyloid. Further research needs to be done in this area, as this finding has not been universally accepted, just yet.

All such commendable initiatives, throw open a relevant question for debate: ‘Can the existing drugs be re-examined in a systematic manner to discover their other possible radically new usages at a much lesser treatment costs to patients?’

In my view, available data emphatically prompts the answer ‘Yes’ and I shall deliberate on on that in this article.

‘Repurposing’ older drugs:

The Oxford Dictionary meaning of ‘repurpose’ is: ‘Adapt for use in a different purpose.’

Accordingly, the process of discovering new usages of older drugs is often called by many scientists as ‘repurposing’.   

Currently, we come across various articles reporting a number of such new initiatives. This process is safer, much less expensive and takes much lesser time.

These laudable R&D initiatives needs encouragement from all stakeholders, especially from the Government. Given proper focus and attractive financial and other incentives, more and more players are expected to get attracted to a different genre of innovation. It is a whole new ball game of discovering new purposes of old and cheaper drugs with known and well-documented long term safety profile.

Some old drugs with ‘new purpose’: 

The following table gives an example of some well known older drugs, for which fresh R&D initiatives discovered their new purpose of treatment, at a much cheaper cost: 

Drug Old Indication New purpose
Amantadine Influenza Parkinson’s Disease
Amphotericin Antifungal Leishmaniasis
Aspirin Inflammation, pain Antiplatelet
Bromocriptine Parkinson’s disease Diabetes mellitus
Bupropion Depression Smoking cessation
Colchicine Gout Recurrent pericarditis
Methotrexate Cancer Psoriasis, rheumatoid arthritis

(Source: Indian Journal of Applied Research, Volume: 4, Issue: 8, August 2014)  

A clarion call to join this movement:

The well-known researcher, Dr. Francis S. Collins, the Director of the National Institutes of Health (NIH) in a TED talk (video) strongly argued in favor of ‘translational research’ to produce better drugs, faster. To make this process to work successfully Francis Collins hopes to encourage global pharmaceutical companies to open up their stashes of drugs that have already passed safety tests, but that failed to successfully treat their targeted disease. 

He wants to study, how drugs approved for one disease could successfully treat another or more ailments and also gave examples of the following drugs, which I am quoting below, as such:

  • Raloxifene: The FDA approved Raloxifene to reduce the risk of invasive breast cancer in postmenopausal women in 2007. It was initially developed to treat osteoporosis.
    .
  • Thalidomide: This drug started out as a sedative in the late fifties, and soon doctors were infamously prescribing it to prevent nausea in pregnant women. It later caused thousands of severe birth defects, most notably phocomelia, which results in malformed arms and legs. In 1998, thalidomide found a new use as a treatment for leprosy and in 2006 it was approved for multiple myeloma, a bone marrow cancer.
    .
  • Tamoxifen: This hormone therapy treats metastatic breast cancers, or those that have spread to other parts of the body, in both women and men, and it was originally approved in 1977. Thirty years later, researchers discovered that it also helps people with bipolar disorder by blocking the enzyme PKC, which goes into overdrive during the manic phase of the disorder.
    .
  • Rapamycin: This antibiotic, also called sirolimus, was first discovered in bacteria-laced soil from Easter Island in the seventies, and the FDA approved it in 1999 to prevent organ transplant rejection. Since then, researchers have found it effective in treating not one but two diseases: Autoimmune Lymphoproliferative Syndrome (ALPS), in which the body produces too many immune cells called lymphocytes, and lymphangioleiomyomatosis, a rare lung disease.
    .
  • Lomitapide: Intended to lower cholesterol and triglycerides, the FDA approved this drug to treat a rare genetic disorder that causes severe cholesterol problems called homozygous familial hypercholesterolemia last December.
    .
  • Pentostatin: This drug was created as a chemotherapy for specific types of leukemia. It was tested first in T-cell-related leukemias, which didn’t respond to the drug. But later NIH’s National Cancer Institute discovered that the drug was successful in treating a rare leukemia that is B-cell related, called Hairy Cell Leukemia.
    .
  • Sodium nitrite: This salt was first developed as an antidote to cyanide poisoning and, unrelated to medicine, it’s also used to cure meat. The National Heart, Lung, and Blood Institute is currently recruiting participants for a sodium nitrite clinical trial, in which the drug will be tested as a treatment for the chronic leg ulcers associated with sickle cell and other blood disorders.
  • Zidovudine (AZT): The first antiviral approved for HIV/AIDS in 1987.
  • Farnesyltransferase inhibitor (FTI): This was used to successfully treat children with the rapid-aging disease Progeria in a 2012 clinical trial.

“None of these drugs could have been developed without collaborations between drug developers and researchers with new ideas about applications, based on molecular insights about disease,” Dr. Collins said.

The examples that I have given, so far, on ‘repurposing’ older drugs are not exhaustive, in any way, there are more such examples coming up almost regularly.

The key benefits: 

The key benefits of ‘repurposing’ older drugs may be summarized as follows:

  • Ready availability of the starting compound
  • Previously generated relevant R&D data may be used for submission to drug regulators
  • Makes clinical research more time-efficient and cost-effective
  • Possibility of much quicker market launch

Slowly gaining steam: 

On November 27, 2012, ‘The Guardian’ reported that a number of university-based spin-outs and small biotech companies are being set up in the United States to find new purpose for old drugs. They express interest especially, on those drugs, which were shelved as they did not match the desired efficacy requirements, though showed a good overall safety profile.

Such organizations, take advantage of the declining cost of screening, with some compound libraries, such as, the Johns Hopkins library, which includes 3,500 drugs, available for screening at a small charge, the report highlighted.

Quoting a specialist, the report stated, “Existing drugs have been shown to be safe in patients, so if these drugs could be found to work for other diseases, then this would drastically reduce drug development costs and risks. Of 30,000 drugs in the world, 25,000 are ex-patent – it’s a free-for-all.”

‘Repurposing’ may not attract many pharma players, Government should step in:

Notwithstanding the clarion call of Dr. Francis Collins to global pharma players for their active participation in such projects, I reckon, the positive response may not be too many, because of various reasons.

Although, ‘repurposed’ drugs offer similar or even greater value to patients than any comparable ‘me-too’ New Chemical/Molecular Entity (NCE/NME), there may not possibly be any scope here for ‘Obscene Pricing’, such as ‘Sovaldi’ and many others, as some experts feel. And that’s the reality.

Moreover, new usages of the same old molecule, in all probability, may not get any fresh Intellectual Property (IP) protection in India, either.

Hence, considering the health interest of patients, in general, the Government should assume the role of ‘prime mover’, primarily to set the ball of ‘repurposing of older drugs’ rolling in India. This has already started happening in some of the developed countries of the world, which I shall dwell upon here.

Funding clinical development for ‘repurposing’:

Let me give a couple of examples of funding such admirable initiatives in two different countries.

I have already mentioned above that the clinical development for ‘repurposing’ Aspirin in the prevention of cancer, is being funded by the charity Cancer Research UK and the National Institute for Health Research (NIHR).

In a similar initiative, National Institutes for Health (NIH) of the United States, launched the ‘National Center for Advancing Transnational Sciences (NCATS), in May 2012.

New Therapeutic Uses program of NCATS helps to identify new uses for drugs that have undergone significant research and development by the pharma industry, including safety testing in humans. NIH claims that ‘using drugs that already have cleared several key steps in the development process gives scientists nationwide a strong starting point to contribute their unique expertise and accelerate the pace of therapeutics development.’

By pairing researchers with a selection of specific drugs, NCATS program tests ideas for new therapeutic uses, ultimately identifying promising new treatments for patients. Funding for this purpose is done by NCATS through NIH. For example, In July 2015, NCATS planned a funding of around US$3 million to support four academic research groups to test a selection of drugs for new therapeutic uses, as follows:

  • Type 2 diabetes
  • Glioblastoma (one of the most aggressive brain tumors in adults)
  • Acute myeloid leukemia (an aggressive blood cancer)
  • Chagas disease (a neglected tropical disease that causes heart, digestive and neurological problems)

According to NIH, each award recipient will test a selected drug for its effectiveness against a previously unexplored disease or condition. The industry partners for these projects are AstraZeneca and Sanofi.

Can it be done in India?

Of course yes, provided the Government considers health care as one its priority focus areas with commensurate resource deployment of all kinds for the same.

As things stand today, India still remains beyond any visibility to give a tangible shape to this specific concept of ‘repurposing’ of older drugs. There does not seem to be any other valid reason why similar model of funding can’t be followed locally too, for this purpose.

The nodal agency to spearhead such initiatives, and to create appropriate groundswell to help gain a critical mass, may well be the ‘Council of Scientific & Industrial Research (CSIR)’ or any other body that the Government decides in consultation with domain experts, together with reasonable financial incentives for commercialization of new usages at an affordable cost.

Conclusion:

As we all know, many people, across the world, are currently going through the pain of seeing their loved ones suffer, and even die, from serious ailments, the treatments of which either do not exist or when exist, the therapy costs may be out of reach of a vast majority of patients. In tandem, the R&D pipeline of the global pharma industry is gradually drying up.

In a situation like this, drug ‘repurposing’ that is directed towards meeting unmet medical needs of patients of all types irrespective of financial status, needs to be increasingly encouraged and pursued as a critical solution to this growing problem.

The good news is that some global pharma majors, though very few in number, have now expressed their intention to salvage their failed molecules and are open to help explore whether such drugs may work in other disease conditions.

India seems to be still miles away from this space, and a bit directionless too. That said, the country is scientifically quite capable of making up the lost ground in this area, provided the Government decides so, garnering requisite wherewithal.

Thus, in my view, the process of ‘repurposing’ older drugs has already started rolling in some major countries of the world, in a well structured manner with requisite funding in place. Tangible outcomes are already noticeable today, with some examples quoted in this article.

As Dr. Francis Collins said, collaborations between drug developers and researchers with new ideas about applications, based on molecular insights about disease are critical in the way forward to achieve this cherished goal in a sustainable manner.

By: Tapan J. Ray

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion.

A Patient-Centric State Initiative To Revolutionize Disease Treatment

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In his State of the Union address, just before the recent visit to India in January 2015, President Barack Obama articulated the need to develop “Precision Medicine” in his country – a bold, giant and perhaps unprecedented State initiative to remarkably improve effectiveness of disease treatment.

To set the ball rolling, in his budget proposal for the year 2016, President Obama earmarked an amount of US$ 215 million for this purpose. This includes an allocation of US$130 million for the National Institutes of Health (NIH) to create a national research database of about a million American volunteers by studying their genetics together with other relevant factors, such as the environments they live in and the microbes that live in their bodies.

‘Precision Medicine’ initiative is similar to path breaking 13-year and US$3 billion Human Genome Project, that has formed the bedrock of modern genomics, President Obama said. He also expressed hope that the private healthcare sector too, including universities and foundations, will get involved to “lay the foundation” for this new initiative of the Government for the interest of patients.

Why is this approach so relevant in today’s healthcare?

In an article published in the ‘British Medical Journal (BMJ) in October 2012, Richard Smith - an editor of BMJ until 2004 and a Director of the United Health Group’s chronic disease initiative wrote:

“Doctors know that many of the patients they treat with drugs will not benefit. Many patients know that too.”

Dr. Smith also emphasized, for centuries medicine classified diseases by what could be seen, felt, and smelt. Thereafter, medical scientists in this area started defining diseases anatomically, physiologically, and biochemically. Even today, this is by and large the paradigm where most medicines fall.

Smith underscored, because of imprecise diagnosis the treatment also becomes haphazard. There is big variation in how individuals respond to drugs and yet that variation is not usually recorded. The regulators approve drugs based on their average performance even today.

The White House release also reiterates, most medical treatments have been designed for the “average patient.” This “one-size-fits-all-approach,” treatments can be very successful for some patients but not for others.

This calls for broadening the scope of disease treatment – from the conventional and error-prone ‘Disease Oriented’ approach, to relatively more unconventional and better targeted with greater value – ‘Patient-Centric’ ones, wherever needed.

Two current trends:

To address this key deficiency in the effective treatment of several dreaded diseases for many patients, following two are the current trends, as stated by William Pao, M.D., Ph.D., who led Roche’s Oncology Discovery & Translational Area research unit since May 2014:

  • We now know that on a molecular level every cancer is different – not only between different tumors, but even between different areas within a single tumor! This means that we need to match the right drug to the patient who we know will respond best to the drug, at the right time during the course of treatment.
  • Patients will have their tumors profiled not only for genetic drivers, but also for predictive immunotherapy markers at different time points in their course of treatment.

Personalized and Precision Medicine:

The above trends in the endeavor of making treatments more patient specific – thus more effective, have thrown open scientific discourse and intense research on ‘Personalized’ and ‘Precision’ medicines.

As Pfizer has described in its website:

Personalized Medicine is a unique approach to medical practice in which the individual aspects of a patient are directly considered to guide treatment planning, including his or her genetic make-up, key biomarkers, prior treatment history, environmental factors and behavioral preferences. This approach can be used to optimize pharmaceutical treatments and overall care.

Whereas, Precision Medicine is an approach to discovering and developing medicines and vaccines that deliver superior outcomes for patients, by integrating clinical and molecular information to understand the biological basis of disease. Precision medicine is the biopharmaceutical research and development paradigm that will help enable more patient-centered clinical practice, including treatment decision-making based on genetic information – an emerging standard now often described as “personalized medicine”.

As President Obama said while announcing the proposal on January 30, 2015, ‘Precision Medicine’ promises delivery of the right treatment at the right time, every time, to the right person.

He also said that the new effort will “bring us closer to curing diseases like cancer and diabetes…and give all of us access to the personalized information we need to keep ourselves and our families healthier.”

‘Precision Medicines’ Dominate Oncology segment: 

In the European Society for Medical Oncology (ESMO) 2014 Congress, pharma majors reported their latest advances on precision medicines in the cancer care. Bristol-Myers Squibb, Roche, AstraZeneca, GlaxoSmithKline (GSK), and Merck & Co. were among the companies presented updates of their most promising cancer drugs closer to this area.

According to a large pharma lobby group in the United States – The Pharmaceutical Research and Manufacturers of America (PhRMA):

“Recent advances in diseases such as cancer and cystic fibrosis are delivering on the promise of targeted treatments, and between 12 and 50 percent of all compounds currently being researched by the industry are potential personalized medicines. These advances hold great promise in improving patient outcomes and controlling costs by targeting the right medicines to the right patients.”

‘DCAT Connect’ Report of September 2014 also indicates significant increase in ‘Precision Medicines’ in the pipelines of the leading global pharma companies, which is a key change over the past decade.

In 2013, targeted therapies increased their share of the global oncology market, accounting for 46 percent of total sales, up from 11 percent a decade ago. According to IMS Institute for Healthcare Informatics, the global oncology drug market reached US$ 91 billion in 2013 with CAGR of 5.4 percent from 2008 to 2013.

Taking note of this trend, it appears that in the near future ‘Precision Medicines’ would possibly be the most promising class in the treatment of cancer, particularly in breast cancer, lung cancer and certain types of leukemia. This is mainly because medical scientists are already quite acquainted with the molecular signatures of different types of cancer related tumors.

Medical scientists and researchers are also working on ‘Precision Medicines’ to more effectively address many other diseases, such as, diabetes, cardiovascular and ailments related to several types of infections.

Increasing potential:

Realization of the potential of ‘Precision Medicines’ to improve care and speed the development of new treatments has just only begun to be tapped.

In recent times, scientists and researchers have accelerated efforts to understand more about biomarkers for this purpose. A study conducted by the German Association of Research-Based Pharmaceutical Companies (vfa) indicates that more than 20 percent of clinical trials carried out since 2005 focused not just on agents, but also on biomarkers. Before 1990, only one in twenty clinical trials addressed biomarkers.

According to another report, last year, 20 percent of all new drug approvals in the United States were for “Precision Medicine” treatments. This vindicates, yet again, the immense potential to turn genetic discoveries into innovative disease treatments for patients.

A bold state sponsored research initiative:

State funded, ‘Precision Medicine’ initiative is a bold new step of the American Government to revolutionize improvement in healthcare and treating disease. It is expected to pioneer a new model of patient-powered research that promises to accelerate biomedical discoveries and provide clinicians with new tools, knowledge, and therapies to select which treatments will work best for which patients.

As the White House release reiterates, most medical treatments have been designed for the “average patient.” As a result of this, “one-size-fits-all-approach” treatments can be very successful for some patients but not for others. This is changing with the emergence of ‘Precision Medicine’, an innovative approach to disease prevention and treatment that takes into account individual differences in people’s genes, environments, and lifestyles.

In this process, ‘Precision Medicine’ gives clinicians tools to better understand the complex mechanisms underlying a patient’s health, disease, or condition, and to better predict which treatments will be most effective.

Opposite view:

In an op-ed titled, ‘Moonshot’ Medicine Will Let Us Down, published recently in The New York Times, the author argued with his differing viewpoints.

I am quoting below three of those arguments:

  • “For most common diseases, hundreds of genetic risk variants with small effects have been identified, and it is hard to develop a clear picture of who is really at risk for what. This was actually one of the major and unexpected findings of the Human Genome Project. In the 1990s and early 2000s, it was thought that a few genetic variants would be found to account for a lot of disease risk. But for widespread diseases like diabetes, heart disease and most cancers, no clear genetic story has emerged for a vast majority of cases.”
  • “Another unexpected finding of the Human Genome Project was the problem of ‘missing heritability.’ While the statistics suggest that there is a genetic explanation for common conditions and diseases running in families or populations, it turns out that the information on genetic variants doesn’t explain that increased risk.”
  • “The idea behind the “war on cancer” was that a deep understanding of the basic biology of cancer would let us develop targeted therapies and cure the disease. Unfortunately, although we know far more today than we did 40-plus years ago, the statistics on cancer deaths have remained incredibly stubborn.”

I am sure, you will analyze the above points with the facts that you have at your disposal on this subject to arrive at a logical conclusion.

Current Applications:

Though these are still early days, initial benefits of ‘Precision Medicines’ have been reported in many areas, such as:

  • Genetic analysis of patients dealing with blood clots: Since 2007, the U.S. Food and Drug Administration has been recommending genotyping for all patients being assessed for therapy involving Warfarin.
  • Colorectal cancer: For colon cancer patients, the biomarker that predicts how a tumor will respond to certain drugs is a protein encoded by the KRAS gene, which can now be determined through a simple test.
  • Breast cancer: Women with breast tumors can now be effectively screened to determine which receptors their tumor cells contain.
  • Cystic fibrosis: In America, patients with a rare form of cystic fibrosis now can choose a drug designed specifically to target the genetic defect causing their illness. Specialized medical centers, such as “individualized medicine centers” at the Mayo Clinic, are also available to the patients for effective treatment.

Ethical issues:

While following this pursuit of excellence of the genetic scientists in the realm of disease treatment, some experts have reportedly raised flags of caution. They strongly feel that DNA code sequencing brings to light a “very real privacy concerns” of individuals.

GeneWatch UK is an organization that investigates how genetic science and technologies will impact on our food, health, agriculture, environment and society. They have been strongly arguing, if genome sequencing is extended to entire population, individuals and their relatives could then be identified and tracked by matching their DNA with the genome stored in the respective health records. This move, as contemplated by them, could “wipe out privacy” with an impact on the society.

Thus, the ethical and social issues in the development of ‘Precision Medicine’ primarily in the area of genetic testing need to be effectively addressed, sooner.

Conclusion:

The quest for moving away from conventional and error-prone ‘Disease Oriented Treatment’ paving the way for unconventional and value added individual patient-specific ones, may soon come to fruition.

Advances in ‘Precision Medicine’ have already led to powerful new discoveries and several new treatments that are tailored to specific characteristics of individuals, such as a person’s genetic makeup, or the genetic profile of an individual’s tumor.  This is leading to a transformation in the way the world can treat diseases such as cancer.

Patients with breast, lung, and colorectal cancers, melanomas and leukemia, for instance, should be provided with facilities in specialist hospitals to undergo molecular testing as a part of patient care, enabling physicians to select treatments that improve chances of survival and reduce exposure to adverse effects.

Although, the potential for precision medicine to improve care and speed the development of new treatments has only just begun to be tapped, some skeptics do say that tailoring medical treatments to individual characteristics of each patient is both overly optimistic and cost-prohibitive.

Be that as it may, in the balance of probability the benefits of prudent use of ‘Precision Medicine’ far outweigh the concerns expressed. This evolving new paradigm would help saving not just significant expenses, but also precious time that is usually spent on ‘trial-and-error treatments’, by enabling clinicians to determine quickly which therapies are most likely to succeed.

Though lot many grounds would still need to be covered in this area, the State sponsored ‘Precision Medicine’ initiative of America to revolutionize disease treatment, in my view, is indeed a laudable one, every way.

By: Tapan J. Ray

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion.

A Potential Game Changer For Pharma R&D

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The ghost of ‘Patent Cliff’ has been haunting the ‘Big Pharma’ since quite some time. This situation has been further aggravated by cost containment pressures of various Governments both in the developed and the emerging markets together with contentious issues on Intellectual Property Rights (IPR).

The ‘dream run’ that the innovator companies enjoyed in launching patented products so frequently and making many those blockbuster drugs of billions of dollars, is no longer a reality.

According to the findings of ‘Pharmaceutical R&D returns performance’ by Deloitte and Thomson Reuters of December 2012, the R&D Internal Rate of Return (IRR) of leading pharmaceutical companies had fallen to 7.2 percent in 2012 from 7.7 percent in 2011.

Many would, therefore, tend to believe that the paradigm is changing significantly. The new paradigm in the brand new millennium throws some obnoxious challenges, including some related to IPR, triggering a process of churning in the global pharma industry. Some astute CEOs of ‘Big Pharma’, having a deep introspection, are bracing for restructuring, not just in the business processes, but also in the process of organizational behavior, mindset, ethics and values. Unfortunately, there are many who seem to believe that this giant wheel of change can be put on the reverse gear again with might.

A new PPP initiative in pharma research:

This trying situation calls for collaborative initiatives to achieve both knowledge and cost synergies for a quantum leap in harnessing R&D output.

One such big laudable initiative has come to the fore recently in this arena. Having experienced something like the ‘law of diminishing return’ in pursuit of high resource intensive R&D projects aimed at critical disease areas such as Alzheimer’s, 10 big global pharma majors reportedly decided in February 2014 to team up with the National Institutes of Health (NIH) of the United States in a ‘game changing’ initiative to identify disease-related molecules and biological processes that could lead to future medicines.

This Public Private Partnership (PPP) for a five-year period has been named as “Accelerating Medicines Partnership (AMP)”. According to the report, this US federal government-backed initiative would hasten the discovery of new drugs in cost effective manner focusing first on Alzheimer’s disease, Type 2 diabetes, and two autoimmune disorders: rheumatoid arthritis and lupus. The group considered these four disease areas among the largest public-health threats, although the span of the project would gradually expand to other diseases depending on the initial outcome of this project.

Not the first of its kind:

AMP is not the first PPP initiative of its kind. The Biomarkers Consortium was also another initiative, not quite the same though, of a major public-private biomedical research partnership managed by the Foundation for the NIH with broad participation from a variety of stakeholders, including government, industry, academia, patient advocacy groups and other not-for-profit private sector organizations.

Open innovation strategy of GlaxoSmithKline (GSK) to discover innovative drugs for malaria is yet another example, where GSK collaborated with the European Bioinformatics Institute and U.S. National Library of Medicine to make details of the molecule available to the researchers free of cost with an initial investment of US$ 8 million to set up the research facility in Spain, involving around 60 scientists from across the world to work in this facility. 

Nearer home, ‘Open Source Drug Discovery (OSDD)’ project of the Council of Scientific and Industrial Research (CSIR) is a now a global platform to address the neglected tropical diseases like, tuberculosis, malaria, leishmaniasis by the best research brains of the world working together for a common cause.

Challenges in going solo:

In this context, it is worth mentioning that the CEO of Sanofi, Chris Viehbacher reportedly said in an interview on April 15, 2013 that his company “Won’t push hard to find an Alzheimer’s treatment because the science isn’t advanced enough to justify the costs to develop a drug. Therefore, Sanofi definitely won’t commit major resources seeking to discover an Alzheimer’s therapy.” He further stated, “I think we have to do a lot more basic science work to understand what’s going on. We really, at best, partially understand the cause of the disease. It’s hard to come up with meaningful targets.”

The above report also mentioned that the first Alzheimer’s drugs, should they prove successful, would lead to a market worth US$ 20 billion as estimated in 2012.

Long desired OSDD model:

The new AMP R&D model in the United States seems to have derived its impetus from the “open-source” wave that has swept the software industry. Keeping that spirit unchanged, in this particular ‘open source’ model too, the participants would share all scientific findings with the public and anyone would be able to use these results freely for their own research initiatives.

The collaborators of this PPP project are expected to gain a better understanding of how each disease type works, and thereafter could make use of that collaborative knowledge to discover appropriate new molecules for the target disease areas.

AMP is also expected to arrive at methods to measure a disease progression and its response to treatment much more precisely. This will enable the pharma participants getting more targets right and early, thereby reducing the high cost of failures. Just to cite an example, there have been reportedly 101 failures since 1998 in late-stage clinical trials by Pfizer, J&J and Elan Corp.

Commendable initiative in the uncharted frontier:

The ‘open source’ AMP initiative of ‘Big Pharma’ in the uncharted frontier is indeed very unusual, as the innovative drug companies are believed to be not just quite secretive about the science that they are engaged in, but also near obsessive in pursuing and clinging-on to the Intellectual Property Rights (IPR) through patents for each innovative steps related to potential new drugs.

It is worth noting that like any OSDD model, this PPP agreement also denies the participating players from using any discovery for their own drug research up until the project makes all data public on that discovery.

However, as soon as the project results will be made public, fierce competition is expected all around to develop money-spinning winning drugs.

Participating companies:

Ten pharma companies participating in AMP are reportedly, AbbVie, Biogen Idec, Bristol-Myers Squibb, GlaxoSmithKline, Johnson & Johnson, Eli Lilly, Merck & Co., Pfizer, Sanofi and Takeda. It is good to find within the participants some staunch business rivals. According to a report, a number of foundations, including the American Diabetes Association and the Alzheimer’s Association have also agreed to get involved in the project.

Some key non-participants:

For various different reasons some key pharma majors, such as, Amgen, Roche and AstraZeneca have decided not to participate in AMP.

AMP project and cost:

AMP reportedly has reportedly articulated its intent to: “Map molecular paths that each disease follows and to identify key points that could be targets for treatment. In Type 2 diabetes, for instance, researchers hope to catalog the genetic changes that raise or lower a person’s risk for developing the disease. It also will seek novel methods to measure each disease’s course while assessing if a potential drug is working. Being able to measure a disease’s progress in that way, could speed drug development by raising a company’s confidence that an experimental drug is working, or let it more quickly end a project if a drug isn’t working.”

The participating companies and the NIH have jointly agreed that the AMP would put together a research system on cost sharing basis by pooling the brightest minds who are experts on each disease, along with the best drug discovery laboratories, relevant data and samples from clinical trials to decipher the diseases in ways, which none of these pharma players has been able to achieve just yet on its own.

To achieve all these, the total cost has been estimated at roughly just US$ 230 million, as compared to US$135 billion that the global drug industry claims to spend in a year on R&D.

This should also be seen in context of a study of December 2012 carried out by the Office of Health Economics (OHE), UK with a grant from AstraZeneca, which estimated that the cost of developing new medicine has risen by ten times from US$100 million in the 1970s to as high as US$ 1.9 billion in 2011.

As a head honcho of a global pharma biggie had put it earlier, a large part of these R&D expenses are the costs of failure, as stated above.

Criticism:

As usual, criticism followed even for this path-breaking project. Critics have already started questioning the rationale of the choice of the above four disease areas, with an exception perhaps for Alzheimer’s and wondered whether the participating players are making use of the federal fund to push hard the envelope of their respective commercial intents.

Another new collaborative approach: 

In another recently announced collaborative initiative, though not of the same kind, where Merck & Co has reportedly entered three separate collaboration agreements to evaluate an immunotherapy cancer treatment that is part of a promising new class of experimental drugs that unleash the body’s immune system to target cancer cells.

Conclusion:

There could still be some hiccups in the process of effective implementation of the AMP project. Hope, all these, if any, will be amicably sorted out by the participants of stature for the benefits of all.

Be that as it may, ‘open source’ model of drug discovery, as believed by many, would be most appropriate in the current scenario to improve not only profit, but also to promote more innovative approaches in the drug discovery process.

On May 12, 2011, in an International Seminar held in New Delhi, the former President of India Dr. A.P.J. Abdul Kalam highlighted the need for the scientists, researchers and academics to get effectively engaged in ‘open source’ philosophy by pooling talent, patents, knowledge and resources for specific R&D initiatives from across the world for newer and innovative drugs.

According to available reports, one of the key advantages of the ‘open source’ model would be substantial reduction in the high cost of failures of R&D projects, which coupled with significant saving in time would immensely reduce ‘mind-to-market’ span of innovative drugs in various disease areas, making these medicines affordable to many more patients.

Thus, PPP initiatives in pharmaceutical R&D, such as AMP, are expected to have immense potential to create a win-win situation for all stakeholders, harvesting substantial benefits both for the pharmaceutical innovators and the patients, across the world.

By: Tapan J. Ray

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion.

 

 

 

 

Vaccines Development: Is it Just a Business Based on Fear?

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‘Vaccination – A Business based on fear’, is the title of a book written by Dr. Gerhard Buchwald M.D, a German medical doctor and a vaccination critic. This book talks about:

“The damage and the deaths caused by vaccination are written off as ‘pure coincidence’, as something which would have occurred anyway, even without vaccination. Often damage is trivialized by claiming that vaccine damage occurs only very, very rarely, or the damage is covered up by naming as the cause, the most unlikely syndromes which can only be found in special literature.”

However, his critics and pro-vaccination experts do opine that this book “is a pathetic presentation of vaccination, from a self-proclaimed anti-vaccination lobbyist. It is full of half-truths, blatant lies and misrepresented statistics”.

Vaccination – one of the most important development in medicines: 

Quite in contrary to what Dr. Gerhard Buchwald wrote, vaccination was voted as one of the four most important developments in medicine of the past 150 years, alongside sanitation, antibiotics and anesthesia by readers of the ‘British Medical Journal’ in 2007. No wonder, Vaccines are one of the most successful and cost-effective public health interventions, which help preventing over 3 million deaths every year throughout the world topping the list in terms of lives saved.

Vaccines that are being developed and marketed today, though provide high level of protection against increasing number of diseases with reduction of associated morbidity and mortality, there is still a crying need for greater encouragement, more resource deployment and sharper focus towards newer vaccines development for many more dreaded and difficult diseases.

In tandem, concerted efforts need to be made by both the industry and the government to improve affordable access to all these vaccines for a larger section of the population, especially in the developing world.

Rejuvenating trend:

However, from the business perspective, the vaccine market, though initially considered to be a low-profit initiative, now has started being under rejuvenated focus keeping pace with improved understanding of the human immune system. The future scope of vaccines is immense, as the management of several potentially preventable diseases remains still unaddressed.

Consequently, the focus of the global vaccine industry is getting expanded from prophylactic vaccination for communicable disease (e.g. DTP vaccine) to therapeutic vaccines (e.g. Anti-cancer vaccines) and then possibly non-communicable disease vaccines (e.g. vaccines for coronary artery disease).

Shifting focus on vaccines types:

As per the ‘National Institute of Health (NIH)’ of USA, following are some types of vaccines that researchers usually work on:

  • Live, attenuated vaccines
  • Inactivated vaccines
  • Subunit vaccines
  • Toxoid vaccines
  • Conjugate vaccines
  • DNA vaccines
  • Recombinant vector vaccines

Among all these segments, sub-unit vaccine is the largest revenue generator, though synthetic vaccines, recombinant vector vaccines, and DNA vaccines are emerging as the fastest-growing segments.

The first vaccine of the world:

In 1796, Edward Anthony Jenner not only discovered the process of vaccination, alongside developed the first vaccine of the world for mankind – smallpox vaccine. To develop this vaccine Jenner acted upon the observation that milkmaids who caught the cowpox virus did not catch smallpox.

As per published data prior to his discovery the mortality rate for smallpox was as high as up to 35%. Thus, Jenner is very often referred to as the “Father of Immunology”, whose pioneering work has “saved more lives than the work of any other person.”

Later on in 1901 Emil Von Behring received the first Nobel Prize (ever) for discovering Diphtheria serum therapy.

R&D costs for vaccines:

According to a paper published by the US National Library of Medicine and National Institute of Health (NIH):

“A vaccine candidate entering pre-clinical development in 2011 would be expected to achieve licensure in 2022; all costs are reported in 2022 Canadian dollars (CAD). After applying a 9% cost of capital, the capitalized total R&D expenditure amounts to $ 474.88 million CAD.”

Issues and challenges:

To produce a safe and effective marketable vaccine, besides R&D costs, it takes reportedly around 12 to 15 years of painstaking research and development process.

Moreover, one will need to realize that the actual cost of vaccines will always go much beyond their R&D expenses. This is mainly because of dedicated and highly specialized manufacturing facilities required for mass-scale production of vaccines and then for the distribution of the same mostly using cold-chains.

Around 60% of the production costs for vaccines are fixed in nature (National Health Policy Forum. 25. January 2006:14). Thus such products will need to have a decent market size to be profitable.

Unlike many other medications for chronic ailments, which need to be taken for a long duration, vaccines are administered for a limited number of times, restricting their business potential.

Thus, the long lead time required for the ‘mind to market’ process for vaccine development together with high cost involved in their clinical trials/marketing approval process, special bulk/institutional purchase price and limited demand through retail outlets, restrict the research and development initiatives for vaccines, unlike many other pharmaceutical products.

Besides, even the newer vaccines will mostly be required for the diseases of the poor, like Malaria, Tuberculosis, HIV and ‘Non Communicable Diseases (NCDs)’ in the developing countries, which may not necessarily guarantee a decent return on investments for vaccines, unlike many other newer drugs. As a result, the key issue for developing a right type of newer vaccine will continue to be a matter of pure economics.

A great initiative called GAVI: 

Around 23 million children of the developing countries are still denied of important and life-saving vaccines, which otherwise come rather easily to the children of the developed nations of the world.

To resolve this inequity, in January 2000, the Global Alliance for Vaccines and Immunization (GAVI) was formed. This initiative was mainly aimed at generating sufficient fund to ensure availability of vaccines for children living in the 70 poorest countries of the world.

The GAVI Alliance has been instrumental in improving access to six common infant vaccines, including those for hepatitis B and yellow fever. GAVI is also working to introduce pneumococcal, rotavirus, human papilloma virus, meningococcal, rubella and typhoid vaccines in not too distant future.

In August 2013, GAVI has reportedly launched a campaign in Kenya to fight the world’s leading killer of children under five with a new Pneumococcal Vaccine for prevention from pneumonia, meningitis and sepsis, which kill more than half a million people a year.

GAVI hopes to avert 700,000 deaths by 2015 through the immunization of 90 million children with pneumococcal vaccines.

Global pharma majors Pfizer and GlaxoSmithKline (GSK) are producing the vaccines as a part of a deal part-funded by Britain, Italy, Canada, Russia, Norway and the Bill Melinda Gates Foundation.

Current trend in newer vaccine development:

Malaria Vaccine:

According to the National Institute of Health (NIH) of the United States, the results of an early-stage clinical trial published in August 8, 2013 in the ‘Journal Science’ for an investigational malaria vaccine has been found to be safe to generate an immune system response and to offer protection against malaria infection in healthy adults.

The scientists at Sanaria Inc., of Rockville, Md. Research Center developed this vaccine known as PfSPZ. The researchers reportedly found that injecting patients with live-but-weakened malaria causing parasites appeared to create a protective effect.

Earlier, Reuters on December 20, 2011 reported that the British scientists have developed an experimental malaria vaccine, which has the potential to neutralize all strains of the most deadly species of malaria parasite.

In October 2011, the data published for a large clinical trial conducted in Africa by GlaxoSmithKline on their experimental malaria vaccine revealed that the risk of children getting malaria had halved with this vaccine. Reuters also reported that other teams of researchers around the world are now working on different approaches to develop a malaria vaccine.

Tuberculosis vaccines:

The Lancet reported in March 2013, as BCG vaccination provides incomplete protection against tuberculosis in infants, a new vaccine, modified Vaccinia Ankara virus expressing antigen 85A (MVA85A), has been designed to enhance the protective efficacy of BCG. MVA85A was found well-tolerated and induced modest cell-mediated immune responses. However, the reasons for the absence of MVA85A efficacy against tuberculosis or M tuberculosis infection in infants would need exploration.

Universal Cancer vaccines:

In a breakthrough development, the Israeli company Vaxil BioTherapeutics has reportedly formulated a therapeutic cancer vaccine, now in clinical trials at Hadassah University Medical Center in Jerusalem.

If everything falls in place, the vaccine could be available about six years down the road, to administer on a regular basis not only to help treating cancer but also to keep the disease from recurring.

Though the vaccine is being tested against a type of blood cancer called multiple myeloma, if it works as the initial results indicate, its platform technology VaxHit could be applied to 90 percent of all known cancers, including prostate and breast cancer, solid and non-solid tumors.

HIV Vaccine:

A recent effort to find a vaccine for HIV is reportedly beginning in 2013 at laboratories in a London hospital and two centers in Africa. The work will be split equally between London, the Rwandan capital Kigali and Nairobi in Kenya.

It has been reported that scientists are recruiting 64 healthy adult volunteers for the trial, which is expected to take up to two years.

Vaccines requirements of the developing world: 

Developing countries of the world are now demanding more of those vaccines, which no longer feature in the immunization schedules of the developed nations. Thus to supply these vaccines at low cost will be a challenge, especially for the global vaccine manufacturers, unless the low margins get well compensated by high institutional demand.

India needs a vibrant vaccine business sector:

For greater focus on all important disease prevention initiatives, there is a need to build a vibrant vaccine business sector in India. To achieve this objective the government should create an enabling ecosystem for the vaccine manufacturers and the academics to work in unison. At the same time, the state funded vaccine R&D centers should be encouraged to concentrate more on the relevant vaccine development projects ensuring a decent return on their investments, for longer-term economic sustainability.

More often than not, these stakeholders find it difficult to deploy sufficient fund to take their vaccines projects successfully through various stages of clinical development in order to obtain marketing approval from the drug regulator, while registering a decent return on investments. This critical issue needs to be appropriately and urgently addressed by the Government to make the disease prevention initiatives in the country sustainable.

Changing market dynamics: 

Even in a couple of decades back, ‘Vaccines Market’ in India did not use to be considered as a focus area by many pharmaceutical companies. Commoditization of this market with low profit margin and unpredictable interest of the government/the doctors towards immunization were the main reasons. Large global players like Glaxo exited the vaccine market at that time by withdrawing products like, Tetanus Toxoid, Triple Antigen and other vaccines from the market.

Currently, the above scenario is fast changing. The vaccine market, as stated above, is getting rejuvenated not only with the National Immunization Program (NIP) of the country, but also with the emergence of newer domestic vaccines players and introduction of novel vaccines by the global players, which we shall discuss below.

In addition, the ‘Indian Academy of Pediatrics (IAP) Committee on Immunization’ now recommends the ‘best individual practices schedule’ for the children in consultation with their respective parents. Such schedule may not conform to NIP and include newer vaccines, broadening the scope of use of vaccines in general.

Global Market:

According to GBI Research Report, overall global vaccines market was valued at US$ 28 billion in 2010 and is expected to reach US$ 56.7 billion by 2017 with a CAGR of 11.5%. The key growth driver of this segment will be introduction of newer vaccines, which are currently either in the regulatory filing stage or in the late stages of clinical development.

The important international players in the vaccines market are GlaxoSmithKline, Sanofi, Pfizer, Novartis AG, Merck and SP-MSD. Together they represent around 88% of the total vaccine segment globally, the report highlights.

Indian Market:

McKinsey in its report titled, “India Pharma 2020: Propelling access and acceptance, realizing true potential“ stated that at 2% penetration, the vaccines market of India is significantly under-penetrated with an estimated turnover of around US$ 250 million, where the private segment accounts for two-thirds of the total. McKinsey expects the market to grow to US$ 1.7 billion by 2020.

India is one of largest markets for all types of vaccines in the world. The new generation and combination vaccines, like DPT with Hepatitis B, Hepatitis A and Injectable polio vaccine, are driving the growth. The demand for veterinary vaccines is also showing ascending trend. Pediatric vaccines contribute to around 60% of the total vaccines market in India.

Domestic Indian players like, Serum Institute, Shantha Biotecnics, Bharat Biotech and Panacea Biotech are poised to take greater strides in this direction. Bharat Biotech is incidentally the largest Hepatitis B vaccine producer in the world. Likewise, Serum Institute is reportedly one of the largest suppliers of vaccines to over 130 countries and claim that ’1 out of every 2 children immunized worldwide gets at least one vaccine produced by Serum Institute.’

The first new vaccine developed in India:

Indian scientists from Bharat Biotech Ltd in Hyderabad have reportedly developed a new oral vaccine against the Rotavirus induced diarrhea, where both vomiting and loose motion can severely dehydrate children very quickly. This is the first new vaccine developed in India, establishing itself as the first developing country to achieve this unique distinction.

Two recent vaccine JV and Partnership agreements in India:

British drug major GlaxoSmithKline (GSK) has reportedly agreed to form a 50-50 venture with the domestic Indian vaccine manufacturer Biological E Limited in January 2013 to develop a product that would combine GSK’s injectable polio shot with a vaccine produced by Biological E to protect against five diseases including diphtheria and tetanus.

In addition, MSD pharma of the United States and Indian drug major Lupin have announced a partnership agreement to market, promote and distribute, MSD’s 23-valent Pneumococcal Polysaccharide Vaccines under a different brand name in India for prevention of Pneumococcal disease, pneumonia being its most common form affecting adults.

A possible threat: 

As per reports most Indian vaccines manufacturers get a major chunk of their sales revenue from exports to UN agencies, charitable organizations like, the Bill & Melinda Gates Foundation and GAVI, and other country-specific immunization programs.

The report predicts, the virtual monopoly that Indian vaccines manufacturers have enjoyed in these areas, will now be challenged by China, as for the first time, in 2012, the Chinese national regulatory authority received World Health Organization’s (WHO) ‘pre-qualification’ certification that allows it to approve locally manufactured vaccines to compete for UN tenders. 

Action areas to drive growth:

McKinsey in its above report ‘India Pharma 2020’ indicated that the action in the following 4 areas by the vaccine players would drive the vaccine market growth in India:

  • Companies need to go for local production of vaccines or leverage supply partnerships. MSD and GlaxoSmithKline’s local partnership in India and for the HiB vaccine with Bio-manguinhos in Brazil may be cited as examples.
  • Companies will need to conduct studies on the economic impact of vaccination and establish vaccine safety and performance standards.
  • Extension of vaccine coverage beyond pediatricians and inclusion of general practitioners, consulting physicians and gynecologists will be essential.
  • Companies will need to enhance supply chain reliability and reduce costs.

Conclusion: 

On January 7, 2012, while requesting the ‘Overseas Indian Medical Professionals’ to partner with the institutions in India, the Health Minister, in his address, announced that the Ministry of Health has already introduced the second dose of measles vaccine and Hepatitis-B vaccination across the country. Moreover, from December 2011 a ‘Pentavalent Vaccine’ has been introduced, initially in 2 States, covering 1.5 million children of India.

All these augur quite well for the country. However, keeping in view of the humongous disease burden of India, immunization program with various types of vaccines should receive active encouragement from the government as disease prevention initiatives, keeping the future generation in mind.

If vaccine related pragmatic policy measures, with equal focus on their effective implementation, are initiated in the country, without delay, the domestic vaccine market, in turn, will receive much awaited further growth momentum. Such initiatives together with newer foreign players and modern imported vaccines coming in, would help the country addressing effectively a prime healthcare concern of the country in a holistic way.

It is about time to aggressively garner adequate resources to develop more modern vaccines in the country, promote and implement vaccine awareness campaigns in the nation’s endeavor for disease prevention before they strike hard and at times fatally.

That said, taking available real world facts into account, doesn’t Dr. Gerhard Buchwald’s and today’s anti-vaccination lobbyists’ postulation, ‘Vaccination – A Business based on fear’, appear to be emanating from a self created world of doom and gloom, defying public health interest for effective disease prevention?

By: Tapan J. Ray

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion.