IOM publishes call to action on chronic disease

A report published today by the US Institute of Medicine (IOM) calls for an overhaul of the way public health departments conduct surveillance and treatment of chronic diseases ranging from arthritis to depression. The report, co-sponsored by the US Centers for Disease Control and Prevention (CDC) and the Arthritis Foundation, both based in Atlanta, warns that chronic disease, which accounts for three quarters of healthcare spending in the United States, is an overlooked crisis. The authors argue that the CDC can use funds more efficiently by expanding surveillance systems, integrating community health systems in schools and workplaces and prioritizing patient education.

The report, Living Well with Chronic Illness, focuses on nine chronic conditions. In addition to cancer and type 2 diabetes, diseases for which substantial public health initiatives already exist, it names mental illnesses such as dementia, post-traumatic stress disorder, schizophrenia and depression. Such diseases decrease the productivity and quality of life of millions of Americans, but public health departments do not adequately address such illnesses, the report argues, in part because surveillance systems fail to assess the needs of patients with chronic disease. For example, little information exists about how people with chronic illnesses such as arthritis access healthcare and what interventions are most effective at increasing their productivity and decreasing the cost of managing the disease.

“Historically, when infectious diseases were the dominant thing, that was what surveillance systems counted,” says Robert Wallace, a physician at the University of Iowa and the chairman of the committee that produced the report. “But now there are enormous numbers of people with chronic illnesses and not enough information about what is and is not working in the public health sphere.”

At the core of the report’s recommendations is a call for the CDC to enact policies that empower people to seek care for chronic diseases. Such policies could include integrating health services in schools and workplaces to encourage healthy lifestyle choices that can prevent or mitigate chronic illness. The report also stresses the importance of getting individuals into the healthcare system early and helping them navigate care options to avoid confusion and alienation.

John Klippel, president of the Arthritis Foundation, says the IOM’s decision to issue a report on chronic illness is timely, and he hopes the public pays attention. “I don’t know that the public quite recognizes the importance and magnitude of chronic illness,” he says. “The effects of these illnesses on lifestyle and quality of life are profound. We need to use resources better, but we also need to empower people to take control of their own care.”

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Ahead of schedule, first hedgehog inhibitor drug gets the green light

In a landmark approval a month and half ahead of schedule, the first targeted treatment for basal cell carcinoma, the most common form of skin cancer, won approval today from the US Food and Drug Administration.

“Today is a huge day for people with basal cell carcinoma,” says Kristi Schmitt Burr, executive director of the Ohio-based Basal Cell Carcinoma Nevus Syndrome Life Support Network. “This absolutely changes the quality of life for those with the genetic form of the disease.”

It’s also a huge day for companies developing drugs that inhibit the Hedgehog pathway to treat cancer. As Nature Medicine reported last year, the newly approved drug—known as Erivedge (vismodegib) and marketed by the Swiss drug giant Roche and its San Francisco-based subsidiary Genentech—is the leader in a wave of new agents that target aberrant Hedgehog proteins, which can drive tumor formation by letting cell growth and differentiation go unchecked. In a 104-person phase 2 trial, Erivedge shrank tumors or healed visible lesions in 43% of the patients with locally advanced basal cell carcinoma and 30% of patients with metastatic forms of the disease.

But not all trials of Hedgehog inhibitors have been as successful. Last week, Cambridge, Massachusetts-based Infinity Pharmaceuticals announced that it was halting a phase 2 trial testing the company’s Hedgehog blocker, called saridegib, in people with pancreatic cancer. Despite Infinity’s hopes for the drug, preliminary data from the 122-person trial showed the drug did not improve overall survival in patients with metastatic pancreatic cancer compared to a placebo.

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Pumping iron: Tau’s role in neuron death revealed

The protein tau has long been at the center of a debate about the causes of Alzheimer’s disease, but how the protein works is still mostly a mystery. A paper published online yesterday in Nature Medicine examines tau’s less-controversial role in Parkinson’s disease and demonstrates that the protein’s function in the brain is intimately related to the transport of iron, a big step toward understanding the molecular underpinnings of both neurodegenerative diseases.

To tease apart the function of tau, the team, led by neurobiologist Ashley Bush of the University of Melbourne, first examined autopsy tissue from people with Parkinson’s. They found iron had built up in the substantia nigra, the part of the brain that stops working in Parkinson’s disease. The team next examined tau’s relationship with iron in a mouse that lacks the protein. Tau knock-out mice older than six months showed accumulations of iron in their brains and developed the cognitive and physical impairments of Parkinson’s disease.

By giving the mice a drug that removes iron, the researchers found that they could prevent these changes. The findings suggest that tau deficiency may cause toxic iron accumulation that leads to the neurodegeneration seen in Parkinson’s disease and Alzheimer’s. The results also suggest possible therapeutic targets for neurodegenerative disease, such as such as tau replacement or iron removal, although the authors say it is still unknown whether brain damage from iron accumulation could be reversed by such therapies.

Hyoung-gon Lee, a neurobiologist who studies Alzheimer’s disease at Case Western Reserve University in Cleveland, Ohio, says the findings about tau’s role in iron export “definitely provide a new direction for how we should look at tau abnormality in neurodegenerative disease.”

In addition to teasing apart a function of tau, Bush says his team’s work also gives important insight into how mouse models are used to study Parkinson’s disease. “After seven months, the mouse model of Parkinson’s was much more complete and complex,” he says, suggesting that for age-dependent conditions such as Alzheimer’s and Parkinson’s, keeping mice into old age may make the mouse model more accurate and useful.

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Once-weekly diabetes drug wins approval on third try

Third time’s the charm for Amylin Pharmaceuticals. After two failed attempts in as many years, the San Diego-based drugmaker finally won approval today for its once-weekly diabetes medication Bydureon (exenatide).

Bydureon is a reformulation of the company’s own twice-daily injectable Byetta. Like Byetta and Novo Nordisk’s bestselling daily injectable Victoza (liraglutide), Bydureon mimics the gut hormone GLP-1 (glucagon-like peptide-1) to lower blood sugar levels. But Bydureon takes advantage of a controlled release technology developed by Alkermes, based in Cambridge, Massachusetts, to offer long-lasting diabetes care with fewer stabs of the needle and with an additional benefit over Byetta: weight loss.

That’s no small perk, notes Daniel Drucker, a diabetes researcher at Mount Sinai Hospital’s Samuel Lunenfeld Research Institute in Toronto. “This is a substantial advance for hundreds of thousands of patients who don’t like multiple injections and who are concerned struggle with weight gain on insulin therapy,” says Drucker, who led a phase 3 trial for Bydureon.

How many people currently taking daily injectables will decide to switch over to Bydureon is still unknown, but forecasts were not helped by a clinical trial reported last year showing that Bydureon was not as effective as the daily injectable Victoza at controlling blood glucose. Amylin hopes that benefits for weight and compliance will give Bydureon an edge where efficacy does not.

Bydureon may not have the weekly injectable field to itself for long, though. Indiana’s Eli Lilly and Britain’s GlaxoSmithKline both have long-acting GLP-1 analogs in phase 3 trials and Denmark’s Novo has a pair of weekly injectables in its pipeline, too.

See ‘Class of once-weekly diabetes drugs poised for approval’ from the December 2011 issue of Nature Medicine for more.

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Bioethicists renew calls for additional oversight of translational research

The current controversy over the publishing of H5N1 research is good news for one unlikely group: bioethicists. Controversy in medicine breeds conversation about ethical questions, and the more people are talking, the more likely researchers are to go looking for ethical guidance as they design studies. Some bioethicists think the best way to address such questions is via ethics consultation services that act independently of institutional review boards (IRBs) so that formal regulatory and informal consulting functions are kept separate.

One of those bioethicists is David Magnus, director of Stanford University Center for Bioethics in California. Writing today in Science Translational Medicine, Magnus and his colleagues argue that IRBs are ill-equipped to provide consultation to researchers on thorny protocol design issues in translational areas such as DNA banking and stem cell therapies because IRBs are already overseeing protocols as regulators..

“There are pitfalls to having a regulatory body in a consulting role,” Magnus told Nature Medicine. “It can lead to slowdowns in the oversight system.”

Such arguments are not exactly new territory, however. Since the creation of the Clinical and Translational Science Awards (CTSA) by the now-defunct US National Center for Research Resources (NCRR) in 2006, bioethicists have been considering such a proposal. In the intervening years, they have published countless reports calling for institutions to fund ethics consultation services for their researchers.

But other than a few select institutions, such as Stanford, most academic centers have not bothered with ethics consultation services, and, in fact, many bioethicists today don’t see the need for additional ethics groups. Tom Murray, president of the Hastings Center, a bioethics think tank in Washington, DC, thinks that the overall goal should be to help institutions come up with clear, consistent and detailed policies for translational research. But, as Murray points out, “That doesn’t necessitate on-the-fly consulting so much as it requires a sounding board for researchers to communicate with their IRB.” So, perhaps it’s time to reinvest in the infrastructure already in place at most academic institutions rather than adding more administrative burdens to cash-strapped research hospitals.

Patient groups cautiously optimistic about Fabrazyme plant approval

Two-and-a-half years after a virus struck Genzyme’s main production plant—triggering worldwide shortages of Fabrazyme, an enzyme replacement therapy for Fabry’s disease, an illness that afflicts fewer than 10,000 people worldwide—regulators in the US and EU have approved a new manufacturing facility. With the opening of the new plant, Genzyme announced today that all Americans currently taking Fabrazyme (agalsidase beta) and the most severely affected European patients should be up to full dosing by the end of March.

“This is extremely encouraging and exciting news,” says Jack Johnson, executive director and cofounder of the Fabry Support and Information Group, a Missouri-based advocacy organization for patients with the rare inherited disorder that causes fatty substances to build up in the eyes, kidneys, nervous system and cardiovascular system, leading to pain and organ complications. “FDA approval of that plant is something that the patient community has been waiting on for a long time.”

Genzyme now plans to shift production of Fabrazyme entirely to the newly approved plant in Framingham, Massachusetts, leaving its Allston, Massachusetts plant—the site of contamination with a vesivirus in its bioreactors in June 2009—to focus on the company’s Gaucher’s drug Cerezyme (imiglucerase).

The company, which was acquired last year by the French drug giant Sanofi, also said today that it will begin transitioning new US patients onto full doses of Fabrazyme, although a timeline was not given. That plan is too slow for C. Allen Black, a Pennsylvania lawyer who, in addition to representing plaintiffs who have been denied access to Fabrazyme or suffered injuries on reduced dosages, is also leading a citizen’s petition demanding that the US Food and Drug Administration prioritize domestic drug supplies ahead of foreign markets. “American taxpayers paid for the invention,” he says. “So it doesn’t make any sense that they’ve triaged Europeans ahead of Americans.”

Black also represents a group of people with Fabry’s who petitioned the US National Institutes of Health (NIH) to employ the government’s so-called ‘march-in’ rights and demand that Genzyme allow other companies to make Fabrazyme in the face of such life-threatening drug shortages. The NIH denied the request in late 2010, and, according to Black, the agency has not yet responded to an appeal filed in April of last year. Although the pace of the march-in process continues to frustrate Black, he stands by the need to break the Genzyme patent, even with the company’s improved manufacturing capacity. “I still firmly believe that we need a reliable source of Fabrazyme, and just because Framingham is online doesn’t mean this won’t happen again,” he says.

Jerry Walter, president of the Washington, DC-based National Fabry Disease Foundation, similarly hedges in response to today’s announcement. “We’re very happy with the approval,” he says. But he would still like to see the FDA approve Replagal (agalsidase alpha), a rival enzyme replacement therapy from UK-based Shire that is currently available in the EU but not the US, so that patients have a back-up drug should shortages ever strike again. The opening of the Framingham plant “makes us feel more comfortable that we’re going to be able to go back to normal and get full dose of medication,” he says, “but after everything we’ve been through we want more options as well.”

Results from two patients signals possible efficacy of stem cell-based eye therapy

Geron may have been the first company to launch a US trial with regulatory clearance involving a human embryonic stem cell (hESC)-derived product. But Advanced Cell Technology (ACT) made history itself today, becoming the first biotech to report results about such a product in a major peer-reviewed journal.

In July of last year, ACT started treating subjects with retinal pigment epithelial cells derived from hESCs in each of its two ongoing US trials—one for a rare form of blindness that typically begins in childhood, the other for a common cause of blindness in the elderly. Now, a team led by Robert Lanza, chief scientific officer of the Marlborough, Massachusetts-based company, offers a four-month status report on the first participant in each trial. Writing in The Lancet, the researchers describe how the transplanted retinal cells appear safe and both study subjects experienced some improvement in vision.

“The results are impressive,” Anthony Atala, director of the Wake Forest Institute for Regenerative Medicine in Winston-Salem, North Carolina, wrote in an accompanying commentary. The authors “have realized the potential to use hESCs therapeutically in human beings.”

In a conveniently timed press release, ACT also announced today that the first participant in the company’s European trial was treated on Friday at the Moorfields Eye Hospital in London. With all this forward momentum, the company, which was profiled in a January 2012 news feature in Nature, hopes it can avoid the fate of Geron. In November, the Menlo Park, California-based biotech announced that it was abandoning its hESC work to focus instead on cancer drugs. Earlier this month, the company also said that it had hired a brokerage firm to help find a buyer for its stem cell portfolio.

From the queen of butter to the queen of diabetes

Deep-fried butter balls. Egg-bacon-burgers on donuts. Fried cheesecake. These are not recommended foods for someone suffering from a chronic metabolic disorder, but this week Paula Deen, the Food Network cooking show host behind such heart disease-inducing recipes, made public that she has type 2 diabetes, a disease she was diagnosed with three years ago. Deen also announced that she is leading a campaign called ‘Diabetes in a New Light’, which is being launched by Denmark’s Novo Nordisk to promote the company’s $500 million-a-year diabetes drug Victoza (liraglutide) in the US.

Deen, who disclosed that she takes Victoza to control her blood sugar, isn’t the first star to turn around and warn against the very thing that made her famous when faced with a life-threatening illness. Actor Wayne McLaren, who posed as the Marlboro Man in cigarette ad campaigns, testified before the US Congress in favor of anti-smoking legislation prior his untimely death from lung cancer.

Celebrity endorsements of drugs are not without controversy either. In 2008, in response to a congressional probe, New York-based Pfizer ended its long television ad campaign for its cholesterol treatment Lipitor (atorvastatin), which featured the celebrity “doctor” Robert Jarvik, who developed an artificial heart implant but was not licensed to practice medicine.

But Novo Nordisk may have a bigger problem than proper execution of celebrity branding. Allen Adamson, managing director at the New York branding firm Landor, expressed surprise at Novo’s decision to work with Deen. “She’s very provocative,” he told Nature Medicine. “How do you take a poster child for what not to eat and turn her into an asset?” But, he acknowledges, she could also turn heads in a good way, by being folksy, credible and intimately related with the disease.

Success for Deen and her new pharma partner is going to require an earnest and complete transformation on her part, one that clearly did not begin immediately after her diagnosis in 2008. Since then, Deen has continued to host cooking shows featuring ultra-high-fat, carbohydrate-rich dishes—not exactly the healthy diet she is now promoting on behalf of Novo. But “she’s relatable, she’s charismatic and she is living with diabetes,” says Ken Inchausti, director of media relations for Novo’s US operations. “We need people to see her as a patient now.”

A housing crisis looms for US research involving lab animals

What a difference a few inches can make. On 1 January, the US National Institutes of Health (NIH) adopted the recommendations set forth in the latest version of the Guide for the Care and Use of Laboratory Animals, and already the usually soporific document is raising hackles.

Among other measures, the document—the eighth such volume from the US National Research Council and the first update since 1996—sets out guidelines for the minimum number of square inches required to house female rodents and their offspring. The recommended cage sizes are roomier than the accommodations currently in use at most animal research facilities in the country, and so adopting the new policy could be an expensive undertaking with little proven benefit, critics say.

“There is no data indicating that the current housing requirements are inadequate,” says Frankie Trull, president of the National Association of Biomedical Research, a Washington, DC-based advocacy group. “The research community was very surprised by the new rules.”

The uproar, news of which was broken earlier this week by National Public Radio, has come as a surprise to the NIH’s Office of Laboratory Animal Welfare (OLAW), which commissioned the review of the Guide and oversees its implementation. “The concerns seem to have been based on misinterpretation of the standards in the Guide,” Patricia Brown, director of the OLAW, wrote in an email. “Implementation of the Guide is expected to have a minimal impact on most institutions.”

Under the new rules, institutions that receive NIH funds will have to submit plans for how they plan to implement the guidelines by the end of the year. To help lessen the impact, the OLAW says institutions may request an exemption from the cage recommendations on animal-welfare grounds. But, as Trull points out, exemptions can be reversed with each annual review, and institutions cannot be sure that the guidelines will not be more strictly enforced in the future.

Such uncertainty, especially when compliance carries an enormous price tag, is detrimental to institutions with limited funds. “People are confused,” Trull says, “and the lack of certainty makes planning ahead difficult.”

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Hype-atitis C? Analysts worry about a bubble forming in the HCV market

With the global market for hepatitis C therapies expected to be worth $20 billion by the end of the decade, drugmakers have been racing to consolidate their hep C pipelines. In November, California’s Gilead bought Pharmasset, a New Jersey-based company with three experimental compounds targeting the hepatitis C virus (HCV), for a whopping $11 billion. And over the weekend, New York’s Bristol-Myers Squibb announced a $2.5 billion deal to acquire Inhibitex, a small Georgia-based company with an HCV polymerase inhibitor called INX-189 in phase 2 development. But, despite the growing interest in HCV therapies—Merck executives went as far as telling Bloomberg News at this week’s JP Morgan Healthcare Conference in San Francisco that the drug giant will “do anything” to be the leader in hepatitis C—some analysts say it’s too soon to know whether the HCV market will be as lucrative as it appears.

“It’s really tough to predict,” says Saurabh Aggarwal, an analyst at Novel Health Strategies in New York. “There is a lot of speculation.”

Predicting the HCV market is complicated by the geography of the virus: an estimated 200 million people worldwide carry HCV, but only around 5% of those infected live in the US and EU—the regions where drugmakers can expect to reap the most profits.

Those figures could still stack up to a potentially enormous untapped market, which helps explain why pharma companies have been willing to pay such premiums to acquire smaller firms with promising HCV therapies. But with two-thirds of HCV-positive individuals in the developed world over the age of 50 and three-quarters of people unaware that they’re even infected, HCV drugs still remain a financial gamble. “Companies are betting on the American market because the pricing is much higher,” says Aggarwal. “But in the US, [HCV is] not like other therapies that have ongoing incidence and prevalence. The window of opportunity is limited.”

That limited time window has pushed drug companies to invest quickly in new HCV treatments. Vertex of Cambridge, Massachusetts and Merck of Whitehouse Station, New Jersey both won regulatory approval last year for the first generation of targeted anti-HCV therapies, but these drugs still don’t work for around a third of all HCV infections that are caused by genotypic subtypes not currently hit by the existing compounds. Allan Haberman, founder of the Biopharmaceutical Consortium in Waverly, Massachusetts, says that the unaddressed subtypes set HCV apart from past investment frenzies around a single therapeutic area. “Everyone jumped on statins,” he points out, “but it turned out there was only room for one blockbuster in the end. Here there is an entirely untapped market in the genotypes that can’t be treated yet.”

Still, the question of whether the drug industry is paying too much for promising HCV acquisitions is still up in the air. Joe DiMasi, director of economic analysis at the Tufts Center for the Study of Drug Development in Boston, says that identifying irrational exuberance in drug investments is a notoriously difficult game.

Aggarwal agrees. “There is an additional challenge in predicting the future sales curve for hepatitis C because there’s a big education aspect to getting asymptomatic people diagnosed,” he says. And as baby boomers age, the clock is ticking for companies that have already poured hopeful billions into HCV.

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