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Alzheimer’s Disease: Robs Memory: Steals Dignity: Escapes Treatment

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At a well reputed Mumbai Club, quite unexpectedIy, I bumped into Sumeet (name changed). It has indeed been a long while since we met at his home in South Mumbai. He came there with his wife Shilpa (name changed). Sumeet, was literally an icon of yesteryears in every respect, a bright engineer with MBA and a much-accomplished leader of his time who retired at the turn of the new millennium.

“How are you Sumeet da?”, I started off cheerfully, as he was looking all around.

“Very well, very well and you?”, he replied softly with a faint quivering of his lips, but without any eye contact.

“I am good Sumeet da, but have you recognized me?” I queried with apprehension.

Turning his face towards Shilpa, Sumeet hesitatingly replied, “No. But have we met before?”

The innocent question struck me as lightning from nowhere, making me a bundle of emotion momentarily. With a lump in my throat and clenching my fists, I struggled hard to regain my composure.

Sumeet, one of the the brightest of brights, from earlier years of our generation, is now a victim of a dreaded illness called Alzheimer’s Disease (AD). The disease has robbed him of his priceless memory, changed his behavior beyond recognition, kidnapped him from his own self, and has stolen most of his much-valued dignity in life, mercilessly.

Alzheimer’s Disease (AD) in brief:

Alzheimer’s Disease (AD), as known to many, is the most common form of dementia, accounting for 60 to 80 percent of all cases, that results in serious memory loss and other intellectual and behavioral traits of individuals, serious enough to interfere with a person’s daily life and tasks.

AD has been defined as, a neurodegenerative type of dementia, in which the death of brain cells causes memory loss and cognitive decline. The total brain size shrinks with AD, as the tissue has progressively fewer nerve cells and connections. Brains affected by AD would always show tiny inclusions in the nerve tissue, called plaques and tangles.

Plaques are found between the dying cells in the brain – from the build-up of a protein called beta-amyloid, while the tangles are within the brain neurons and from a disintegration of another protein, called tau.

Though the abnormal protein clumps and inclusions in the brain tissues are always present in AD, there could be another underlying process also that is actually causing the disease, which scientists are not sure of, as yet.

Be that as it may, with the progression of the disease, besides memory loss, AD precipitates other serious symptoms, such as, deepening confusion about events, time and place; mood and behavior changes; unfounded suspicions about family, friends and even professional caregivers; disorientation; other behavior changes; then difficulty speaking, swallowing and walking. At a late stage, the patients lose the ability to carry on even a conversation and respond to their environment.

Cause:

Although the causes of AD are not quite clear to the scientists, as yet, the disease results from a combination of genetic, lifestyle and environmental factors that adversely affect the brain over a period of time.

Scientists opine that in less than 5 percent of the cases, the causative factors of the AD are specific genetic changes that can almost definitively indicate that a person would develop AD. According to published reports, while the strongest risk gene found so far is apolipoprotein e4 (APOE e4), other risk genes have not been conclusively confirmed, just yet.

Survival rate:

According to published reports, the survival rate of AD patients, after their symptoms become noticeable to others, can range from 4 to 20 years, depending on health conditions, the average being 8 years. In the United States, AD is the sixth leading cause of death.

Not a normal part of the aging process:

Although majority of people with AD are over 60 years of age, it is not just a disease of old age. Up to 5 percent of cases the disease may strike even younger people in 40s or 50s. Women are found to be more prone to AD than men.

Prevalence:

The World Health Organization (WHO) declared dementia, in general, as a priority condition in 2008, through the Mental Health Gap Action Program.

Each year, the total number of new cases of dementia worldwide has been reported as nearly 7.7 million, which means one new case every four seconds.

According to AC Immune SA of Switzerland, AD will be one of the biggest burdens of the future society showing dramatic incidence rates. Over 44 million people were now affected with AD worldwide. Since the incidence and prevalence of AD increase with age, the number of patients will grow dramatically as our society gets older. By 2050 the patient numbers are expected to triple, touching 135 million AD patients worldwide.

India:

According to another report titled, “Priority Medicines for Europe and the World – A Public Health Approach to Innovation” By Béatrice Duthey, Ph.D published on 20 February 2013, the fastest growth of AD in the elderly population is now taking place in China, India, and their south Asian and western Pacific neighbors and has become a major public health concern as the population ages.

AD is the most common kind neurodegenerative disease in India. There are reportedly around 5 million dementia patients in the country of which, roughly 70 to 80 per cent have AD. This number is expected to double by 2030, and the costs involved are expected to increase three times. Besides drugs, costs of ‘care giving’ for AD patients are also expected to rise significantly.

The market and economic impact:

According to AC Immune SA, AD market is currently estimated at US$ 5 billion annually and is expected to exceed US$ 20 billion by 2020.

The global economic impact of AD is shown by its worldwide cost of US$ 640 billion, exceeding 1 percent of gross world product. It can be seen as the most significant health crisis in the 21st century. The 2010 annual costs of treating and caring for patients was  $183 billion in the US alone. This figure is expected to increase to $ 1.1 trillion in 2015.

AD is becoming the third most expensive disease, counting for 30 percent of the US healthcare costs. The medical costs for Alzheimer´s Disease patients are three times higher than for other older patients. Moreover, AD patients mostly live at home resulting in high impact on family’s health, emotional well being, as well as their employment and financial security.

India:

Many elderly people in India live with AD without any treatment, accepting the condition as an unavoidable one and related to the aging process of an individual.

The present day costs of maintaining a patient with AD in India, who has been diagnosed, are reportedly any where between Rs. 50,000 to Rs. 4,50,000. Additionally, many elderly couples are just not frail and living alone these days, as their children may be working in a far off country.

Currently, AD market in India is reportedly around US$ 50 million, growing around 25 percent. More disease awareness initiatives are expected to accelerate the market growth by manifold. Sun Pharma is the market leader in the AD segment. Other, key players are Dr. Reddy’s Laboratories (DRL), Torrent, Glenmark, Ranbaxy, Cipla and Alkem

In fact, Cipla recently reportedly announced an investment of US$ 21 million in Chase Pharmaceuticals of the United States, which is an early-stage drug development company focused on developing novel approaches to improve treatments for Alzheimer’s disease.

In addition, DRL is also making rapid strides in this area. In 2013, the company launched generic Donepezil Hydrochloride tablets for AD in the US market.

Treatment:

There is no cure for AD as of date. There is no disease-modifying treatment for AD even in the global market, either.

Since 2003, there has not been any single innovative drug launched in the global market either for prevention or cure of AD. The available drugs cannot stop the progression of the disease. They just temporarily slow the worsening of dementia symptoms. The situation gets even more complicated as the disease is usually diagnosed late, when already 70 percent of the nerve cells in the brain are dead.

Global researchers are looking for new treatments to alter the course of the disease and improve the quality of life for people suffering from this dreaded disease.

For the treatment of AD, the U.S. Food and Drug Administration (FDA) has approved two types of medications, namely,

-      Cholinesterase inhibitors, such as, Aricept, Exelon, Razadyne, Cognex

-      Memantine, such as, Namenda to treat the cognitive symptoms (memory loss, confusion, and problems with thinking and reasoning) of the disease.

Many doctors prescribe both types of medications together, along with Vitamin E for cognitive changes.

However, Aricept is the only cholinesterase inhibitor approved to treat all stages of AD, from moderate to severe.

Although, Tacrine (Cognex) was the first cholinesterase inhibitor approved, very few doctors prescribe this drug today because of more serious side effects.

According to The Alzheimer’s Association, the world’s leading voluntary health organization in Alzheimer’s care, support and research; the current treatments for AD at a glance are as follows:

Treatments at a glance:

Generic Brand Approved For Side Effects
donepezil Aricept (Eisai/Pfizer) All stages Nausea, vomiting, loss of appetite and increased frequency of bowel movements.
galantamine Razadyne (Janssen) Mild to moderate Nausea, vomiting, loss of appetite and increased frequency of bowel movements.
memantine Namenda/Ebixa (Actavis/Lundbeck) Moderate to severe Headache, constipation, confusion and dizziness.
rivastigmine Exelon (Novartis) Mild to moderate Nausea, vomiting, loss of appetite and increased frequency of bowel movements.
tacrine Cognex (Pfizer) Mild to moderate Possible liver damage, nausea, and vomiting.
vitamin E Not applicable Not approved Can interact with antioxidants and medications prescribed to lower cholesterol or prevent blood clots; may slightly increase risk of death.

India:

In India the treatment is much the same. Besides, patented versions, relatively cheaper generic equivalents of all these drugs are available in the country.

On going drug trials: 

As there are no effective therapies for AD, this therapy segment remains at the top of the list for unmet needs, globally. Disease-modifying therapies could transform this market appreciably.

At the Alzheimer’s Association International Conference held in Copenhagen, Denmark from July 12 to 17, 2014, scientists described five trials that may prevent the onset of the neurodegenerative disease in people not yet experiencing cognitive decline, as follows:

  • Gantenerumab and Solanezumab: Two experimental drugs, , both of which are antibodies designed to bind to amyloid and prevent it from forming brain-damaging plaques.
  • Solanezumab: An experimental anti-amyloid compound.
  • The trial will first pilot a screening test for two genes to see if it can accurately predict risk of mild cognitive impairment. The next phase of the trial will test an experimental compound designed to delay symptoms of mild cognitive impairment and Alzheimer’s disease in people without symptoms.
  •  Crenezumab: Anti-amyloid antibody
  •  An immunotherapy that prompts the body’s immune system to produce antibodies against amyloid protein, and a beta-secretase inhibitor that blocks the production of certain forms of amyloid.

According to Alzheimer’s Disease Therapeutics and Diagnostics: World Market 2013-2023 the following global players hold greatest potential. In particular, the analysis investigates these companies:

• Pfizer
• Eisai
• Actavis
• Lundbeck
• Novartis
• TauRx Therapeutics
• AC Immune.

A large pharma industry association of the United States has indicated in a report that dedicated researchers are currently working on nearly 100 medicines in development for Alzheimer’s and other dementias. These could give future patients a new hope for a future free of AD.

Conclusion:

AD can strike anyone at any time without any visible warning whatsoever. It then robs the person’s memory, steals the individual’s dignity of life, evades all available current treatments, till it is able to extinguish slowly and agonizingly the last flicker of life, mostly much sooner than otherwise it would have been.

Like many other countries, India – the world’s 2nd largest population, is also facing a crisis in dealing with the growing number of AD patients.

These patients require constant support from family/professional caregivers along with medical attention. The progression of the disease leaves patients mostly in semi-vegetative states, at times for years.

If no cure is available for AD, arresting the disease progression becomes a major health challenge in the country. Currently only short term symptomatic treatment is available. Neither is there any organized mechanism for early diagnosis of AD with specific markers, which could lead to early intervention with the most appropriate and effective drugs to address the disease sooner.

Alzheimer’s Disease that turns millions of otherwise boisterous individuals, like Sumeet, into living dead, snatching away everything that a life would possibly demand at its minimum, must feature in the areas of focus of the new national heath policy of India under the new dispensation.

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.

Just Born A Pharma Goliath: Would India Be Impacted?

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Just born a potential pharma Goliath, as Actavis – the Dublin-based one of the largest global generic drug makers, in its biggest ever purchase, acquires New York based R&D based pharma major – Forest Laboratories, for a whopping US$ 25 billion.

It is worth noting that as on date Actavis has grown mainly through Mergers and Acquisition (M&A) route. In 2012, the company took over American generic drug major Watson Pharma for €4.5 bn and then Ireland’s Warner Chilcott, marketing patented drugs for gastrointestinal and urological conditions, for US $8.5 bn. Post buy out of Forest Laboratories, Actavis would have annual sales turnover of US$15 bn.

So far, mostly R&D based Pharma players acquired generic drug makers:

This acquisition is interesting. The reason being, since the last few years, mostly research based global pharmaceutical companies are taking over generic pharma players in the emerging markets with a reasonable speed. To cite a few examples:

In June, 2010, British drug major GlaxoSmithKline (GSK) announced acquisition of ‘Phoenix’, a leading Argentine pharmaceutical company focused on the development, manufacturing and marketing of branded generic products, for a cash consideration of around US $253 million. With this acquisition, GSK planned to accelerate its business growth in Argentina and the Latin American region.

Similarly, Paris based Sanofi with the acquisition of Zentiva, became an important player in the European generic drug market. Zentiva, is also a leading generic player in the Czech, Turkish, Romanian, Polish, Slovak and Russian markets, besides the Central and Eastern European region. In addition to Zentiva, in the same year 2009, Sanofi also acquired other two important generic players, Medley in Brazil and Kendrick in Mexico.

In February 2014, the German Drug major Bayer reportedly announced that it would buy Dihon Pharmaceutical Group Co of China, expanding the German company’s footprint in a key growth country. Dihon’s products are also sold in Nigeria, Vietnam, Myanmar and Cambodia. Privately held Dihon specializes in ‘Over-The-Counter (OTC)’ and herbal ‘Traditional Chinese Medicine (TCM)’ products.

Back home, MNCs acquired the following generic companies from 2006 to 2011:

Year Indian Companies Multinational Companies

Value ($Mn)

 Type of Deal
2006 Matrix Labs Mylan 736 Acquisition
2008 Ranbaxy Labs Daiichi Sankyo 4,600 Acquisition
Dabur Pharma Fresenius Kabi 219 Acquisition
2009 Shantha Biotech Sanofi-aventis 783 Acquisition
2010 Orchid Chemicals Hospira 400 Acquisition
Piramal Healthcare Abbott 3,720 Acquisition
Paras Pharma Reckitt Benckiser 726 Acquisition
2011 Universal Medicare Sanofi 110 Acquisition
2013 Mylan Agila Specialities 1750 Acquisition

Key drivers for generic acquisition:

From 2012 to 2015 patented drugs with a combined turnover of US$ 183 billion have already faced or would face intense generic competition resulting in, as high as, around 90 percent price erosion for those products. It is not just patent expirations that are exerting pressure on innovator companies. Added to this, a relatively weak R&D pipeline and increasing focus of various governments to reduce healthcare costs, have forced many research based global pharma players to imbibe the inorganic growth strategy in the generic space to quickly grab a sizable share of this large and fast growing market, especially in the emerging economies of the world.

Actavis acquisition is different:

In the above light Actavis’s acquisition of Forest Laboratories is quite different. Here, instead of a predominantly research-based company’s acquiring a generic player, a basically generic drug major has bought a research based global pharmaceutical player.

Interestingly, Forest Laboratories follows a unique R&D model. It is focused on, instead of discovering on its own, identifying strong medically relevant product candidates and guiding them through the complex development lifecycle, from proof-of-concept through post-marketing.

Strong global portfolio of both generic and patented drugs:

Post buy out, Actavis would have a strong combo-portfolio of generic drugs together with a relatively robust line-up of a diverse range of patented products, spanning across therapy areas such as Anti-Infective, Respiratory, Cardiovascular, Central Nervous System, Gastrointestinal, Obstetrics and Pain Management and that too not just in the emerging markets, but globally, unlike many others.

In addition, acquisition of Forest Laboratories would also provide Actavis access to former’s large US sales teams, transforming the merged entity a formidable force to reckon with in the topmost pharmaceutical market of the world, besides many others.

An intriguing recent decision:

That said, it is interesting to note that in January 2014, Actavis, then the second-biggest generic drug maker by market capitalization, announced that it would quit China as “It is not a business friendly environment… China is just too risky”. This is indeed intriguing, because by 2015, China’s generic market is expected to be close to US$ 82 billion.

Be that as it may, post acquisition Actavis would be in a position to offer all its customers in all the markets of the world a rainbow of products from patented to generics, carving out a critical strategic advantage for itself in the global pharmaceutical market.

Impact in India:

The question now boils down to what would be the impact of the just born Goliath on the domestic pharmaceutical industry in India.

Differentiated generic business:

The generic drugs market is usually classified as simple generics, super-generics and biosimilars. To differentiate, by adding value in the generic medicines, many domestic players are gradually entering into the ‘Super Generic’ and ‘biosimilar’ category of drugs. For example, Dr Reddy’s Laboratories has reportedly chosen to go for a difficult to copy drug formulation with its blood-thinner Fondaparinux. Sun Pharma, on the other hand, is focusing on innovative delivery platforms for its ophthalmic drugs and oral contraceptives. Cadila is looking at newer drug delivery modes for its painkiller Diclofenac. So is Lupin in other areas. In the biosimilar arena, Biocon has already developed Trastuzumab formulation of Roche. Moreover, the biosimilar business of Dr Reddy’s Laboratories continues with its impressive growth trend, besides many other Indian players in the same fray.

Simultaneously, India is improving its effectiveness in ‘Contract Research and Manufacturing Services (CRAMS) space. As we have recently witnessed in India the alliances between Merck & Co and Cipla and earlier with Sun Pharma. Even prior to that, collaborative agreements of Pfizer with Aurobindo Pharma; GSK with Dr Reddy’s Laboratories; Abbott India with Cadila and many more, would vindicate this point.

Merck Serono of Germany also announced a partnership to co-develop a portfolio of biosimilar compounds in oncology, primarily focused on monoclonal antibodies (MAbs) with Dr. Reddy’s Laboratories. The partnership covers co-development, manufacturing and commercialization of the compounds around the globe, with some specific country exceptions. Mylan has also signed similar agreement with Biocon.

Glenmark Pharma has chosen yet another route, by entering into collaboration with Forest Laboratories (now Actavis) in 2013, for the development of a novel mPGES-1 inhibitor for chronic inflammatory conditions, including pain management.

Advantage India, provided…

Global generic drugs market would get its next booster dose with reportedly around 46 drugs going off patent opening a market of another US$ 66 billion from monopolistic to intense generic competition in 2015.

Details of ANDA status from the US-FDA source, as I indicated in my earlier blog post, probably indicate that several Indian players have already started moving in that direction at a brisk pace, keeping their eyes well fixed on the crystal ball. Over 30 percent of Abbreviated New Drug Applications (ANDAs) and around half of the total Drug Master Filings (DMF) now come from the Indian Companies. In 2013 alone, the US-FDA granted 154 ANDAs and 38 tentative ANDAs to the Indian companies.

Despite all these, a serious apprehension does creep in, which finds its root in much-publicized fraudulent behavior of a few large Indian drug manufacturers, seriously compromising with the cGMP standards of some high profile global drug regulators. This challenge has to be overcome, sooner, to reap rich harvest out of the emerging global opportunities in the space of generic drugs.

Conclusion: 

Geographically, North America is the largest consumer of generic drugs followed by Europe and Japan. However, the highest growth of the generic drugs market is observed in the Asia-Pacific region. Besides Actavis, some of the major generic drugs manufacturers of the world are Mylan, Apotex, Hospira, Par Pharmaceutical., Sandoz International and Teva Pharmaceutical.

From India, Ranbaxy Laboratories (before the recent fiasco), Dr. Reddy’s Laboratories, Lupin and Sun Pharma, besides many others, are competing quite well in the global generic drugs market with success.

Though Actavis has its manufacturing operations in India with its registered office located in Mumbai, the company is not yet engaged in serious local marketing operations in the country. In 2006 as Watson Pharma Pvt Ltd., the company acquired Sekhsaria Chemicals in a move to push forward its generic drug agenda globally. In 2005, it acquired a manufacturing facility in Goa from Dr. Reddy’s Laboratories to produce solid dosage generic drugs for the US market.

Taking all these into considerations, if much deliberated cGMP issues with the foreign drug regulators are resolved sooner, Actavis is not expected to make any major difference for Indian pharma players either in the domestic market or for that matter globally, any time soon.

Thus Indian pharma players are unlikely to be adversely impacted with the emergence of this new potential Goliath in the global pharmaceutical landscape.

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.