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Cancer Care: Dawns A New Era Of Precision Medicine In India

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The concept of ‘Precision Medicine’ has started gaining increasing importance, in the treatment process of many serious diseases, such as cancer. It is now happening in many countries of the world, including India.

The National Institutes of Health (NIH) of the United States, describes ‘Precision Medicine’ as:

“An emerging approach for disease treatment and prevention that takes into account individual variability in genes, environment, and lifestyle for each person.”

This is quite in contrast to the widely practiced “one-size-fits-all” type of drug treatment approach, where disease treatment and prevention strategies are developed for the average person, with less consideration for the differences between individuals.

It continues, irrespective of the fact that the same drug doesn’t always work exactly the same way for everyone. It can be difficult for a physician to predict, which patient will benefit from a medication and who won’t, besides having any advance inkling on who will experience Adverse Drug Reactions (ADR) with it, and who will not.

Whereas, the treatment path of ‘Precision Medicine’ allows doctors to predict more accurately which treatment and prevention strategies will work most effectively for a particular disease, and in which groups of people. This is mainly because, ‘Precision Medicine’ looks at the root cause of the ailment for each patient.

For example, in cancer care, use of the term ‘Precision Medicine’ would mean a treatment process for patients with similar tumors, that has been immaculately worked out in accordance with their unique genetic, physical, psychosocial, environmental, and lifestyle factors. Thus, especially for the treatment of life-threatening diseases, a gradual shift from “one-size-fits-all” types of medicines to ‘Precision Medicines”, could bring a new hope of longer survival or remission, for many such patients.

For example, in precision cancer care, it is all about analyzing a patient’s tumor to determine with specificity what drug or combination of drugs will work best with least side effects for that particular individual.

In this article, I shall focus on the development, use and benefits of ‘Precision Medicine’ in cancer, especially in India.

Not a radically new concept:

Several examples of ‘Precision Medicine’ can be found in a few other areas of medicine, as well, though its use in everyday health care is not very widespread, as on date.

One such example can be drawn from the blood transfusion area. A person requiring it, is not given blood from a randomly selected donor. To minimize the risk of any possible post-transfusion related complications, the blood for transfusion is selected only after scientific confirmation that the donor’s blood type matches to the recipient.

Difference between ‘Precision’ and ‘Personalized’ Medicines:

There is a significant overlap between these two terminologies. According to the National Research Council (NRC) of the United States, ‘Personalized Medicine’ is an older term having a meaning similar to ‘Precision medicine’, but may not always be exactly the same.

This change was necessitated as the term ‘Personalized’ could be interpreted to imply that treatments and preventions are being developed uniquely for each individual. Whereas, in ‘Precision Medicine’, the focus is on identifying which approaches will be effective for which patients based on genetic, environmental, and lifestyle factors, as stated above. The NRC, therefore, preferred the term ‘Precision Medicine’ to ‘Personalized Medicine’ to avoid such confusions or misunderstandings. Nevertheless, these two terms are still being used interchangeably.

Another terminology – ‘Pharmacogenomics’ is also used by some, in the same context, which is, in fact, a part of ‘Precision Medicine’. According to National Library of Medicine, United States, Pharmacogenomics is the study of how genes affect a person’s response to particular drugs. This relatively new field combines pharmacology (the science of drugs) and genomics (the study of genes and their functions) to develop effective, safe medications and doses that will be tailored to variations in a person’s genes.

Global initiatives taking off:

Currently, in various parts of the world, there are many initiatives in this area. However, one singular state sponsored initiative, I reckon, is exemplary and stands out.

According to NIH, in early 2015, President Obama announced a research effort focusing on bringing ‘Precision Medicine’ to many aspects of health care. The President’s budget for fiscal year 2016 included US$216 million in funding for the initiative for the NIH, the National Cancer Institute (NCI) – the NIH institute focused on cancer research, and the Food and Drug Administration (FDA).

‘The Precision Medicine Initiative’ has both short-term and long-term goals:

  • The short-term goals involve expanding precision medicine in the area of cancer research. Researchers at the NCI hope to use this approach to find new, more effective treatments for various kinds of cancer based on increased knowledge of the genetics and biology of the disease.
  • The long-term goals focus on bringing ‘Precision Medicine’ to all areas of health and healthcare on a large scale.

The market:

According to a July 2016 research report by Global Market Insights, Inc., the ‘Precision Medicine’ market size was over US$39 billion in 2015, and has been estimated to grow at 10.5 percent CAGR from 2016 to 2023, expanding the market to US$ 87.79 billion by end 2023.

The demand for ‘Precision Medicine’ is expected to significantly increase, specifically in cancer treatments, and also would be driven by advancements in new healthcare technologies, and favorable government regulations, in this area.

Faster US regulatory approval:

According to an August 15, 2016 article, published in the ‘MedCity News’ – a leading online news source for the business of innovation in health care, companion diagnostics, this trend is gaining currency as novel drugs are being paired up with tests that determine which patients will have a higher chance of responding to that drug.

This is vindicated by an expert analysis of a recent study, which found that the probability of a drug approval jumped three-times to 25.9 percent of those drugs that were approved with a predictive biomarker, from 8.4 percent for drugs without one.  This means a threefold increase in success, as determined by FDA registration, if any pharma or biologic drug company had a predictive marker in its new product development strategy. This indication would expectedly encourage more drugs to come with companion diagnostics than without, as the analysis underscored.

The National Institutes of Health (NIH) of the United States defines ‘Biomarkers’ or ‘Biological Markers’ as, “a characteristic that is objectively measured and evaluated as an indicator of normal biological processes, pathogenic processes, or pharmacological responses to a therapeutic intervention.”

‘Precision Medicine’ in India:

In the Indian health care space, ‘Precision Medicine’ is still in its nascent stage. This is despite its need in the country being high, especially while treating life threatening ailments, such as cancer, with greater precision, predictability and, therefore, more effectively than at present.

In several focus group studies too, the local medical specialists have also concurred with the global estimation of the inherent potential of ‘Precision Medicine’, as it rapidly evolves in India, particularly for use in oncology.

Local research:

Studies related to ‘Precision Medicine’ have already commenced, though in a modest scale, in a number of Government research centers, such as, Centre for Cellular and Molecular Biology (CCMB), Indian Council of Medical Research (ICMR), National Institute of Biomedical Genomics (NIBMG) and Institute of Genomics & Integrative Biology (IGIB).

Some large Government Hospitals too, like, All India Institute of Medical Sciences (AIIMS), National Institute of Mental Health and Neurosciences (NIMHANS), and even in Tata Memorial Hospital are making good progress in this area.

Local potential and market impact:

In March 2016, a leading daily of India had reported with examples that oncologists have started using ‘Precision Medicine’, in the country.

In this report, a molecular geneticist was quoted saying, “We see patients with blood, breast, lung, and colon cancer being referred for genetic testing on a routine basis. This testing is either for predictive purposes or for precision medicine guidance, where genetic tests are increasingly being used to determine which drug may be used for treatment.”

“We have had more than a few cases where patients respond well after being put on a new drug based on the results of these tests,” the expert said.

According to a May 2016 report of the Indian Council of Medical Research (ICMR), in the year 2016, the total number of new cancer cases is expected to be around 14.5 lakh (1.5 million), and the figure is likely to reach nearly 17.3 lakh (1.7 million) of new cases in 2020.

Over 7.36 lakh (736,000) people are expected to succumb to this disease in 2016 while the figure is estimated to shoot up to 8.8 lakh (880,000) by 2020. The data also revealed that only 12.5 percent of patients come for treatment in early stages of the disease.

Taking note of this fast ascending trend, it would be quite reasonable to expect that treatment with ‘Precision Medicine’, using advanced genetic profiling, would catch up, and grow proportionally in some section of the population, sooner than later. This trend is expected to keep pace with the commensurate increase in the anti-cancer drug market of India.

In tandem, the demand for preventive measures, especially, for cancer, cardiovascular, psychosomatic and many chronic metabolic diseases at the onset or prior to even onset stages, based on genome-based diagnostics, are also expected to go north. This would primarily be driven by increasing health awareness of the younger generation of India.

The spin-off commercial benefits for the pharma and diagnostic players in India, competing in these segments, could well be a significant boost even in the market potential of the older generic drugs in new patient groups, prompted by many out-of- box diagnostic and disease treatment strategies.

Another interesting article on genomic diagnostics for ‘Precision Medicine’, published on March 15, 2016 by ‘Pistoia Alliance’ – a global, not-for-profit alliance in life science that aims at lowering barriers to innovation in R&D, also expressed similar views regarding the future potential of ‘Precision Medicine’ in India.

Some key strategic steps:

Taking proactively some key strategic steps for business planning and development by the domestic pharma and diagnostic players, is now more important than ever before. This may call for developing some critical studies that would accelerate working out novel strategies for ‘Precision Medicine’ in India, besides obtaining required regulatory approvals in the coming years. The studies may include, among others:

  • Detailed analysis of target patient populations
  • Their genetic makeup for different types, or sub-types of diseases
  • Addressable sub populations
  • Their current treatment strategies, costs, affordability and differentiated value offerings of each, if any.

Conclusion:

Genomic research in India is now mainly directed towards routine genome-based diagnostics for a number of conditions, mostly for cancer. The country needs to encourage taking rapid strides to first sharpen and then gradually broaden this area, in various ways, for more effective and predictable treatment outcomes with ‘Precision Medicine’. As on date, most of such studies are carried out in the United States and Europe.

Alongside, a robust regulatory framework is required to be put in place, for wider usage of ‘Precision Medicine’ in India, without causing any concern to stakeholders. Government should also explore the need of clearly defining, and putting in place transparent, patient-friendly and robust Intellectual Property (IP) policies in the ‘Precision Medicine’ related areas to encourage innovation.

Healthcare expenditure being out-of-pocket for a vast majority of the population in India, the additional cost to be incurred for genomic sequencing tests, still remains a huge concern for many. Nevertheless, the good news is, many players have now gradually started entering into this area, spurring a healthy competition. This process would also gain accelerated momentum, as we move on.

This is just a dawn of a new era of ‘Precision Medicine’ in India. Its rapid development, is expected to be driven by a large number of startups, equipped with state-of-art technology, and hopefully, with greater health insurance penetration and the support from the Government. All this would bring the ‘Precision Medicine’ treatment cost affordable to a sizeable section of the population in the country, particularly for the treatment of cancer. The evolving scenario appears to be a win-win one, both for the patients, as well as the pharma and diagnostic players in India.

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. 

‘Disease Oriented Treatment’ to ‘Patient Oriented Treatment’ – An evolving trend

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The quest for moving away from conventional and error-prone ‘Disease Oriented Treatment’ paving the way for unconventional individual patient-specific ones, may soon come to fruition. Dramatic progress in the research for developing ‘Personalized Medicines’ could soon offer a choice for individual ‘Patient Oriented Treatment’ with precisely predictable efficacy and safety, especially for the treatment of various intractable and dreaded diseases.

Sir John Bell, Professor of Medicine at Oxford University, adviser on genetics to the government and chair of its human genomics strategy group has reportedly said in early December 2012 that ‘Personalized Medicine’ for all could soon be a clear possibility, as everybody will be able to have their entire DNA make-up mapped for as little as £100 (Rs.8, 700 approx.).

This estimate seems to be quite realistic as Sir John said, the price of genome sequencing has fallen by 100,000-fold in 10 years and genetics being a key component of all common diseases, genome sequencing will help immensely in the use of new drugs, as well.

Raising a flag:

While watching the pursuit of excellence by the genetic scientists in the realm of disease treatment, some experts have reportedly been sounding a note 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 investigate 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 ‘Personalized medicines’ primarily in the area of genetic testing and consideration of race in the development of such medicines, these thought leaders feel, need to be effectively addressed, sooner.

That said, the Prime Minister of UK Mr David Cameron has reportedly said:

“By unlocking the power of DNA data, the NHS will lead the global race for better tests, better drugs and above all better care. We are turning an important scientific breakthrough into a potentially life-saving reality for NHS patients across the country. If we get this right, we could transform how we diagnose and treat our most complex diseases not only here but across the world, while enabling our best scientists to discover the next wonder drug or breakthrough technology.”

Increasingly more in development pipeline:

Rapid strides in pharmacogenomics bring in a promise of radically different ways of treating diseases, as major pharmaceutical companies of the world make progress in developing much more effective medicines designed to target smaller populations.

Tufts Center for the Study of Drug Development (Tufts University) in its publication named ‘Impact Report’, November/December 2010 articulated, “Bio-pharmaceutical companies are committed to researching and developing personalized medicines and within their development pipelines, 12% – 50% of compounds are personalized medicines.”

Experts envisage that over a period of time ‘Personalized Medicines’ will be targeted to biological/genomic profile of a patient or patient types to significantly improve the quality of treatment.

The definition:

The above report defines Personalized Medicines as “Tailoring of medical treatment and delivery of health care to individual characteristics of each patient, including their genetic, molecular, imaging and other personal determinants. Using this approach has the potential to speed accurate diagnosis, decrease side effects, and increase the likelihood that a medicine will work for an individual patient.”

Mainly due to all these reasons, ‘Personalized Medicines’ are expected to be an effective alternative to quite unwieldy current ‘blockbuster drug’ business model.

Makes a perfect fit:

The aim of ‘personalized medicines’ is, therefore, to make a perfect fit between the drug and the patient. It is worth noting that genotyping is currently not a part of clinically accepted routine. However, it is expected to acquire this status in the western world, very shortly.

Consequent changes and shifts:

This potential paradigm shift in the healthcare space would prompt similar changes in various disease diagnostic technologies, which will not only be able to detect a disease well before appearance of symptoms, but would also indicate which patients will best respond to or be adversely affected by which medications.

‘Personalized Medicines’ will in that process ensure a critical shift from the ‘Disease Oriented Treatment’ to a ‘Patient Oriented Treatment’, which can be initiated even before the clinical manifestations of a disease are detected.

The technological march towards this direction is indeed risky and arduous one. However, the benefits that the humanity will accrue out of this disruptive innovation will far outweigh the risks in all forms.

Towards this direction:

  • The Economist, March 12-18, 2011 in its article titled “Toward the 15-minute genome” reported that ‘nanopore sequencing’ of human genome is now gaining momentum. This could make sequencing of entire genome of cancerous and healthy cells possible to accurately point out what has exactly changed in individual patients, enabling the oncologists to determine patient specific drugs for best possible results in each case, separately.
  • New cancer marker has been reported to aid earlier detection of the disease, where repetitive stretches of RNA are found in high concentrations in cancer cells.
  • A new blood test will accurately detect early cancer of all types with an accuracy of greater than 95%, when repeated the accuracy will even be even greater than 99%.
  • ‘Breast On A Chip’ will test nano-medical detection and treatment options for breast cancer.
  • A brain scan will detect the telltale “amyloid plaques” ,the protein fragments that accumulate between nerves in Alzheimer’s disease.

A difference that matters:

With ‘Personalized Medicines’ the health of a patient will be managed based on personal characteristics of the individual, including height, weight, diet, age, sex etc. instead of defined “standards of care”, based on averaging response across a patient group. Pharmacogenomics tests like, sequencing of human genome will determine a patient’s likely response to such drugs.

All these are expected to offer more targeted and effective treatment with much safer drugs, and in all probability at a lesser real cost. Such medicines will also help identify individuals prone to serious ailments like, diabetes, cardiovascular diseases and cancer and help physicians to take appropriate preventive measures, simultaneously.

Each patient is unique:

‘Personalized medicines’ in that process will focus on what makes each patient so unique, instead of going by the generalities of a disease.

To give a quick example, genetic differences within individuals determine how their bodies react to drugs such as Warfarin – a blood thinner taken to prevent clotting. It is of utmost importance to get the dosing right, as more of the drug will cause bleeding and less of it will not have any therapeutic effect.

‘Personalized medicines’, therefore, have the potential to usher in a revolutionary change, the way patients are offered treatment by the medical profession. Genomic research will enable physicians to use a patient’s genetic code to arrive at how each patient will respond to different types of available treatments.

In the field of cancer, genetic tests are currently being done by many oncologists to determine which patients will be benefited most, say by Herceptin, in the treatment of breast cancer.

Indian initiatives:

Some companies, both well known and little known, are making quiet collaborative progress in the genome sequencing area in India, which will ultimately make expensive treatments like cancer more affordable to many.

Other advantages:

The expected benefits from the ‘Personalized Medicines’, besides very early diagnosis as stated above, are the following:

1. More Accurate Dosing: Instead of dose being decided based on age and body weight of the patients, the physicians may decide and adjust the dose of the medicines based on the genetic profiling of the patients.

2. More Targeted Drugs: It will be possible for the pharmaceutical companies to develop and market drugs for patients with specific genetic profiles. In that process, a drug needs to be tested only on those who are likely to derive benefits from it. This in turn will be able to effectively tailor clinical trials, expediting the process of market launch of these drugs.

3. Improved Healthcare: ‘Personalized Medicines’ will enable the physicians to prescribe ‘the right dose of the right medicine the first time for everyone’ without any trial or error. This would give rise to much better overall healthcare.

Reduced Clinical Trial cost:

Genome sequencing will help identifying a patient population, which will be far more likely to respond positively to the new treatment. In that process, if it reduces costs of clinical trial by even 5%, expected net savings for the industry towards clinical trial in real term will be significant.

With ‘personalized medicines’ the innovator companies will be able to significantly reduce both time, costs and the risks involved in obtaining regulatory approvals and penetrating new markets with simultaneous development of necessary diagnostic tests. Such tests will be able to identify patients group who will not only most likely to be benefited from such medicines, but also will be least likely to suffer from adverse drug reactions.

Therefore, considerable cost advantages coupled with much lesser risks of failure and significant reduction in the lead time for clinical trials are expected to make ‘personalized medicines’ much more cost effective, compared to conventional ‘blockbuster drugs’.

A sustainable business model:

Realization of deficiencies in the deep-pocket economics of ‘block buster drug R&D business model’ has made ‘personalized medicines’ a reality today. Large number of smaller and exclusive markets for ‘personalized medicines’ is also expected to be quite profitable for the pharmaceutical companies. On the other hand, better efficacy and safety profile of ‘personalized medicines’ will prove to be cost-effective in the overall healthcare systems.

However, smaller segmentation of the market may not leave enough space for the conventional ‘blockbuster model’, which is the prime mover of the global pharmaceutical industry, even today.

Reports indicate that some renowned global pharmaceutical companies like, Roche, AstraZeneca, GlaxoSmithKline are making good progress towards this direction through collaborative initiatives.

A different marketing ball game:

With ‘personalized medicines’ the ball game of marketing pharmaceuticals is expected to undergo a paradigm shift. Roche’s model of combining necessary diagnostic tests with new drugs will play a very important role in the new ball game.

Roche is reportedly ensuring that with accompanying required diagnostic tests, the new oncology products developed at Genentech can be precisely matched to patients.

Use in ‘Primary Care’:

Currently there is no widely successful model for use of ‘personalized medicines’ in a ‘primary care’ situation. However, it has been reported that in states like, Wisconsin in the U.S, initiative to integrate genomic medicines with ‘primary care’ has already been undertaken.

Scaling-up operations of such pilot projects will give a big boost to revolutionize the use of ‘personalized medicines’ for precision and targeted treatment for the ailing population.

Current Applications:

Though these are still the early days, initial benefits of ‘personalized medicines’ are now being reported in many areas like:

  • 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.

Above applications of ‘personalized medicines’ will help saving not only significant expenses, but also precious time, which is usually spent for ‘trial-and-error treatments’. In addition, this approach also helps clinicians to determine quickly which therapies are most likely to succeed.

A truly patient centric treatment approach:

Generally speaking, unlike conventional ‘one size fits all’ type treatment approach, where same medicine with varying efficacy is tried on a large number of patients with equally varying rates of failure, ‘personalized medicines’ in true sense starts with the patients.

This may not necessarily mean unique treatment for each patient every time. With ‘personalized medicine’-based treatment approach, depending on biological, genetic and genomic characteristics, patients can be divided into groups and targeted treatment with specific drugs showing most efficacy and least side-effects can be worked out for each of these groups. Hence ‘personalized medicines’ by all means are truly patient centric.

Conclusion:

One of the key issues today in the realm of conventional ‘Disease Oriented Treatment’ is that lot many drugs do not work on significantly large number of patients with same efficacy and safety standards. ‘Personalized medicines’ will be able to address this issue with right diagnosis, ensuring treatment with the right medicine in right doses for the right type of patients.

Though in Europe and to some extent in the US, ‘Patient Oriented Treatment’ approaches with ‘personalized medicines’ have already been initiated, these are still early days for this novel concept to get translated into reality for wider use.

Lot many grounds may still need to be covered especially in the areas of medical research and also to work out the regulatory pathways for ‘personalized medicines’ in healthcare by the pioneers of this great concept.

That said, the evolving transition from the conventional ‘Disease Oriented Treatment’ to unconventional ‘Patient Oriented Treatment’ seems to be irreversible now.

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 and also do not contribute to any other blog or website with the same article that I post in this website. Any such act of reproducing my articles, which I write in my personal capacity, in other blogs or websites by anyone is unauthorized and prohibited.