Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Wednesday, May 20, 2015

The search for Huntington's disease treatments is indeed ‘rocket science’ – and we can all help build the rocket

For people facing Huntington’s disease and other devastating, untreatable conditions, the powerful wish for a cure can conjure up the image of an elated scientist bursting from a laboratory and declaring “Eureka!”

However, it is unlikely a treatment for HD will emerge in this way.

We often misunderstand scientific progress, as explained in an essay in the May 16, 2015, edition of The New York Times by prominent physicist Leonard Mlodinow, Ph.D.

“Why do we reduce great discoveries to epiphany myths?” asked the sub-headline for Dr. Mlodinow’s online article, which was titled “It Is, in Fact, Rocket Science.”

“The mythical stories we tell about our heroes are always more romantic and often more palatable than the truth,” Dr. Mlodinow writes. “But in science, at least, they are destructive, in that they promote false conceptions of the evolution of scientific thought.”

From Isaac Newton to Charles Darwin to Stephen Hawking, we have oversimplified the process of discovery, Dr. Mlodinow explains. Rather than the eureka moments popularized in books and the media – like the apple falling on Newton’s head – these scientists’ discoveries involved years of hard work and questioning of assumptions, including their own.

Thus, Dr. Mlodinow reminds us that breakthroughs result from the cumulative build-up of many moments of discovery by scientists past and present.

He thus underscores a crucial point for the Huntington’s disease community: finding treatments will necessarily involve a collective effort by scientists and volunteers in research studies and clinical trials.

“Even if we are not scientists, every day we are challenged to make judgments and decisions about technical matters like vaccinations, financial investments, diet supplements and, of course, global warming,” Dr. Mlodinow points out. “The myths can seduce one into believing there is an easier path, one that doesn’t require such hard work.”

We in the HD community must all play our part in the quest for treatments.

A eureka moment deflated

As a carrier of the deadly HD mutation who watched his mother succumb to the disease, I have sometimes fallen prey to the seductive scenario described by Dr. Mlodinow, and even done so in this blog.

Four years ago this month, I was so excited about Alnylam Pharmaceuticals’ progress towards a remedy that I posted a picture of myself holding an Alnylam compound designed to attack HD at its genetic roots. I wrote that the compound, “the potential cure in my hand,” seemed magical.

I later made the image my Facebook profile photo.

(See the photo below and click here to read more.)


Gene Veritas holding the Alnylam compound in 2011 (photo by Dr. Matthias Kretschmer, Alnylam)

I had perhaps become overconfident about the Alnylam project.

In collaboration with its partners Medtronic and CHDI Foundation, Inc., the nonprofit virtual biotech focused on HD treatments, Alnylam was planning to apply in 2012 for permission to start a clinical trial.

In early 2012, however, Alnylam cut a third of its work force in order to reduce costs. In May of that year, less than a year after my 2011 visit, the company shifted its business strategy. It downgraded the HD project and fired the scientific director in charge

Alnylam chose instead to concentrate on less complex – and perhaps more profitable – projects to find drugs for other conditions. Alnylam passed on the responsibility for testing the compound in a human clinical trial to Medtronic.

To date, Medtronic has announced no plans for a human clinical trial of the Alnylam compound.

“Medtronic believes the siRNA [gene-silencing] drug-device program continues to represent an exciting opportunity to combine an innovative therapeutic strategy with state-of-the-art drug device delivery technology for Huntington’s disease,” Jack Lemmon, Ph.D., a Medtronic program manager, responded in an e-mail to my request for an update on the project. “Pre-clinical work has generated promising results; however the therapy research program has been paused since 2013 until partnerships can be established allowing us to sustain the research. At this time, it is premature to discuss timeframes, but we hope to continue work to find a treatment for this devastating neurodegenerative disease.”

Shots on goal

I am concerned that the project runs the risk of entering a not uncommon limbo, which one former director of the National Institutes of Health calls the “valley of death,” the increasingly difficult transition between laboratories and clinical trials.

Devising the Alnylam compound involved a significant investment of time, money, and expertise. In my extensive interviews with Alnylam scientists in 2011, and even in a conference call with some of those same researchers after the announcement of the 2012 cutback, they expressed enthusiasm about the promise of the compound.

The Alnylam compound may – or may not – ultimately play a role in the search for treatments.

Without the Alnylam compound, the HD community would have one less shot on goal in the critical gene-silencing field.

I am disappointed at the lack of action – much less progress – regarding the Alnylam compound.

Fortunately for the HD community, one of those shots is scheduled to take place this year: Isis Pharmaceuticals, Inc., and Roche will start a historic gene-silencing clinical trial using a different type of drug technology. Other companies and labs are also focusing on the development of gene-silencing approaches for HD.

The Alnylam project didn’t meet the expectations of many in the community. However, it has still provided valuable data from which other researchers can benefit. I am grateful for Alnylam’s contributions to the quest for treatments, and I’m crossing my fingers that Medtronic can resume the project.

I indeed recognize that the path to treatments is not easy. Nor is it straight.

One example of a potentially fortuitous outcome of the Alnylam decision: the dismissed HD project director, Dinah Sah, Ph.D., now works as the senior vice president of neuroscience for Voyager Therapeutics, one of the new companies exploring gene-silencing for HD.


Dinah Sah, Ph.D., of Voyager Therapeutics (photo by Gene Veritas)

A road paved with cooperation

Enthusiasm is essential, but it must be tempered with the recognition that scientists need time – and money – to test hypotheses.

It took some two decades to discover the huntingtin gene. At the time of this breakthrough in 1993, people in the HD community celebrated.

Rightfully so, hope for treatments increased significantly.

Since then, hundreds of researchers from around the globe have published thousands of scientific papers on HD. Along the way they have identified hundreds of potential HD drug targets (biological pathways).

From the 1970s until today, thousands of individuals from HD-affected families have participated in research studies and, more recently, a growing number of clinical trials.

While many of us are disappointed that successful treatments have not emerged, we must recognize that the enormous amount of scientific work regarding HD should contribute – perhaps in ways no one yet knows – to future progress.

The road to treatments is paved with cooperation, and with the recognition that multiple drugs may be needed to manage this complex genetic disorder. (Thus, scientists don’t say “cure” when referring to HD.)



Cooperation: the HD community out in force at an HDSA Team Hope Walk (photo by Gene Veritas)

Something larger than ourselves

Our society worships individual “heroes.

However, in the fight to defeat HD, each participant contributes with his or her talents and resources: financial donations, scientific expertise, caregiving, and daily dedication to the cause.

In this long-term commitment, we strive for the well-being of those beyond ourselves: the children who have yet to develop symptoms, the future generations of HD families, and other disease communities such as Alzheimer’s, Parkinson’s, and many conditions even rarer than HD like dentatorubral-pallidoluysian atrophy, known as DRPLA.

For now, I’ll keep my Facebook profile photo as a symbol of hope governed by caution.

Yes, defeating HD is rocket science. When, collectively, we have completed that rocket, we can all ride it together.

(Please remember during HD Awareness Month to donate generously to the Huntington’s Disease Society of America or the HD cause of your choice!)

Thursday, February 26, 2015

‘None of us are free until we are all free’: science and solidarity at the 10th Annual Huntington’s Disease Therapeutics Conference


Riding the emotion of a keynote speech by a young scientist at risk for Huntington’s disease, and seeking treatments with the immense help of a non-profit foundation, the participants at a historic research conference this week witnessed the fusion of science and human solidarity ultimately necessary for defeating HD.

On the evening of February 23, I and the approximately 300 attendees at the 10th Annual HD Therapeutics Conference, sponsored by the CHDI Foundation, Inc., listened as Jeff Carroll, Ph.D., recounted his mother’s demise from HD, his positive test for the HD genetic mutation, and his decision to pursue a career in science to save himself and others from HD.

“He’s an interesting combination of things in terms of being an advocate in the community, in terms of being someone from an HD family, in terms of being a top-flight researcher in the HD community, in terms of being a great communicator – he and his partner Ed Wild – in establishing HDBuzz, which is just a tremendously useful model of how to communicate results out to the rest of the community,” Robert Pacifici, Ph.D., CHDI’s chief scientific officer, said in introducing Dr. Carroll at the conference in Palm Springs, CA.

As an HD researcher-advocate who has attended all ten therapeutics conferences since 2006, Dr. Carroll offered a uniquely qualified, candid assessment of the progress towards treatments and CHDI’s role in the process.

“Every year, I come home revitalized and energized by the site of so many smart people working so hard on this problem,” Dr. Carroll, 37, told the audience in the main ballroom at the Parker Palm Springs hotel. He expressed his profound gratitude to CHDI, which has funded his and numerous other scientists’ research.

Painful progress toward success

However, success depends on the “efficient and timely completion of well-designed Phase III trials with HD drugs,” Dr. Carroll continued.

“A few weeks ago I attended a meeting at the Princeton CHDI office that included attendees from major pharmaceutical companies currently running HD clinical trials,” he said. “They are deeply concerned about something that would never have occurred to me to worry about, which is poor recruitment for trials of Huntington’s disease drugs.

“On reflection, it makes sense that the HD community may be wary of the way we have been speaking to them. Participating in the first clinical trial of a new molecule might be exciting, but participants of the third could be excused for having some questions.”

Trial administrators put participants through a daunting number of tests, he observed, which may discourage people from participating in more than one trial. Because trials are extremely expensive, sponsors often try to maximize the findings in Phase II, but not enough trials are reaching Phase III, he added.

“It must be said the scale of what is possible here must be unique in human history,” Dr. Carroll said of the efforts by CHDI, which has put more than $700 million towards treatments. “Resources on the scale being deployed by CHDI have been spent on common diseases, but never before have they been spent on such a focused attempt to ameliorate a rare disease.”

The HD community will achieve “something never done before” or “fail majestically,” he quipped with irony.

He added: “We might actually be watching the painful progress toward success.”

You can watch Dr. Carroll’s speech in the video below.


Our brothers and sisters

After Dr. Carroll and his wife Meghan had HD-free twins, thanks to preimplantation genetic diagnosis (PGD), he believed that “HD is done killing people in my family until I am gone,” he recalled.

However, recently two at-risk babies were born in his extended family.

“For a brief window, my family was the last that had to face this awful threat,” Dr. Carroll said. “But the arrival of these children has reminded me that none of us are free until we are all free.”

We must “raise up those of our brothers and sisters still suffering,” he concluded.

Like me, Dr. Carroll is racing against the genetic clock.

Crying for our community

This conference, my fifth, has proved especially poignant for me personally – even more so than the 2011 meeting, which I keynoted. In terms of the quest for HD treatments, it has been a landmark event. (My next article will provide an overview of the conference’s scientific aspects.)

I was both deeply saddened and heartened by Dr. Carroll’s story. I relived my own mother’s death from HD in 2006, my positive test for the gene in 1999, and my daughter’s negative test for HD in the womb (PGD was unavailable) in 2000.

It was one of the best speeches I have heard in two decades of observing the HD movement. Dr. Carroll tempered his enthusiasm and compassion for the HD community with hard-nosed, no-nonsense scientific analysis.

For the evening of February 25, the conference organizers arranged for a surprise outdoor screening of the 28-minute documentary The Lion’s Mouth Opens, about actress, director, and producer Marianna Palka’s positive test for HD. The film made the 2015 Academy Awards shortlist for Best Documentary Short.

As part of the surprise, Marianna, whom I had met earlier in the day, took questions from the audience. She appeared at the edge of the crowd, next to me, just as the film was ending.


Gene Veritas (left, aka Kenneth P. Serbin), Marianna Palka, and Louise Vetter, CEO of the Huntington's Disease Society of America (photo by Jerry Turner, CHDI)

It was a highly emotional experience for me. Filled with anger, frustration, and overwhelming sadness that a young person like Marianna should have to face HD, and once again reliving the trauma of my own HD test and the excruciating experience of testing our daughter, I hugged Marianna and cried uncontrollably for several minutes as she held and consoled me.

It’s so unjust that people have to face HD, I thought to myself.

I hardly ever let myself think that, trying to be strong, but at that moment I allowed myself to do so, and also to let loose all of the powerful emotions of the conference.

I told Marianna I was so sorry for her.

Marianna, who is just 33, was strong, telling me that we would all work together against HD.

After the film finished, Marianna talked with the audience about her experience of genetic testing, her strategies for staying healthy, and her work in film. She observed that The Lion’s Mouth Opens makes men cry.

You can watch Marianna’s exchange with the audience in the video below.


Enrolling families in the fight

At the start of the conference, I had lunched with Joe Giuliano, the CHDI director of clinical operations in Princeton, N.J., HD advocate Jimmy Pollard, and Chris Brown, a scientist from Evotec, a drug discovery company headquartered in Germany.

We pondered the same critical issue raised by Dr. Carroll, and that brave advocates like Marianna impel us to consider: how to inspire more families in the HD community to become involved in research studies and clinical trials.

I recalled my own speeches and blog articles about the terrible barriers to greater involvement: ignorance, fear, denial, stigma, and family tensions.

Giuliano is also the chief CHDI administrator for the Enroll-HD program, a global platform, research project, and HD patient and family registry aimed at facilitating clinical trials and the discovery of treatments. As Giulano and others have noted, it is not scientists who cure diseases, but the patients who participate in clinical trials.

That observation provides a fitting coda to Dr. Carroll’s speech.

And it underscores the absolute necessity to fuse science and solidarity in the fight against not just HD, but all diseases.

For an update on Enroll-HD, watch my interview with Giuliano below.


A personal landmark, and gratitude

With this article I have completed my own HD milestone: it is the 200th post in this blog.

I am grateful to so many: God, my wife and daughter, my HD-victimized mother Carol Serbin, my HD-warrior father Paul Serbin, who died with a broken heart in 2009, CHDI, and the entire HD community.

Although I worry that my overly emotional response to the conference could signal the mood swings characteristic of early HD onset, I am also grateful that I remain, according to my last neurological checkup, asymptomatic.

As I prepared to depart the conference, I pondered how the HD movement can reinforce human solidarity and our bond with the researchers.

Wednesday, January 15, 2014

Game-changers in the fight against disease: a report from the World Stem Cell Summit

With a growing array of possibilities, stem cell treatments for diseases and other medical conditions hold the potential for a new era in human health.

That upbeat message – including a report on Huntington’s disease research – dominated the 2013 World Stem Summit, held in my home city of San Diego last December 4-6. I attended the sixth annual summit as an advocate for the Huntington’s Disease Society of America (HDSA).

“Over the next 20 years we need the brightest young minds using all the platforms of technology to drive creativity for solutions to defeat the problems of disease using stem cells,” said Alan Trounson, Ph.D., the outgoing president of the California Institute for Regenerative Medicine (CIRM), during his keynote address. “If we do that, I’m sure we’re going to be successful.” CIRM, a state-run research funding agency, is spending a voter-approved $3 billion by 2017 to explore stem-cell treatments for various diseases.

“All of us nationally and internationally involved in stem cell research firmly believe that some of these things will work out,” Jonathan Thomas, Ph.D., J.D., the chair of the CIRM oversight board, said at a CIRM public forum. “The great thing about this field is everything’s a game changer. So whatever any of these terrific scientists are able to get through to fruition will literally change the world when it comes to that particular disease or condition. Therein lies the promise of stem cell research.”

You can watch the Trounson and Thomas speeches, as well as other presentations, in my stem cell summit album by clicking here.

‘Cell sheets’ for eyes and hearts

From AIDS to cancer to urinary incontinence, researchers presented exciting advances in stem cell research and the efforts to improve people’s health.

In one of the most striking presentations, Teruo Okano, Ph.D., of Tokyo Women’s Medical University, demonstrated his “cell harvesting” technique to create “cell sheets” of particular kinds of tissue. He has transplanted these sheets onto diseased eyes, cancerous esophageal tissue, and damaged heart muscle.

The small number of patients receiving these experimental treatments has shown dramatic improvement.

Dr. Okano’s team is seeking to employ cell sheets in the treatment of conditions affecting the gums, lungs, liver, pancreas, cartilage, and the middle ear. They are currently seeking to develop a cell sheet-based tissue and organ factory to automate and standardize cell sheet production, aiming to minimize human error and expand the availability of these treatments.

You can watch Dr. Okano’s presentation in the video below.


Safe cells for an HD trial

On the same panel, Jan Nolta, Ph.D., the director of the Stem Cell Program and Institute for Regenerative Cures at the University of California, Davis, provided an overview of her lab’s work with mesenchymal stem cells (MSCs), which scientists primarily derive from the bone marrow.

“I’ve been working with these cells and have a love affair with them for over 25 years,” Dr. Nolta said. “What we do with them is to genetically engineer them…. They are in clinical trials. They are safe. And they have some really cool properties.”

The MSCs' abilities include restoring blood flow, preventing cell death, reducing inflammation, and keeping the immune system at bay during tissue remodeling (natural repair of tissue), Dr. Nolta explained. MSCs have been used with “statistically significant success” in clinical trials involving heart disease, orthopedics and spine fusion, cartilage repair, autoimmune diseases, Crohn’s disease, stroke, and arthritis, she added.

Dr. Nolta also provided an update on her lab’s projected clinical trial of MSCs to combat Huntington’s disease by using the cells to deliver a key growth factor, BDNF (brain-derived neurotrophic factor), to brain cells. In July 2012, CIRM granted her lab $19 million to support the project. (Click here to read more.

“We’ve just started the lead-in clinical trial,” Dr. Nolta told the summit audience. “We’ll observe patients for a year, before they would get the cell therapy. We’re recruiting patients at that trial now.”

You can watch Dr. Nolta’s presentation in the video below.


Becoming part of the fabric

Further confirmation of advances in the stem cell field came in the release of a report, Stem Cell Research: Trends and Perspectives on the Evolving International Landscape, which revealed that stem cell research is growing at more than twice the world average for research in general (7% versus 2.9%). The report further noted that about half of stem cell papers refer to “drug development” or “regenerative medicine,” further evidence of the field’s promise for developing treatments.

In the summit’s exhibit hall, scores of scientific posters demonstrated progress on numerous fronts, and displays by stem cell related companies, flanked by expert salespersons, showed how much stem cells are becoming part of the fabric of business.

At the booth for BioSpherix, sales representative Ray Gould explained to me how his company’s product Xvivo System, a small, modular GMP (good manufacturing practices) setup, provides an alternative (for a fraction of the cost) to the large, multi-million-dollar facilities put up by organizations for stem cell and other kinds of research.

Ray Gould of BioSpherix explains the use of the company's modular GMP system (photo by Gene Veritas).

Fulfilling the promise, understanding the odds

For me, even though I carry the deadly HD gene, the glow of hope from the summit has not worn off.

After the conference, as requested, I started receiving e-mails from the Genetics Policy Institute, which, along with CIRM, was one of the event’s six major sponsors. The messages update the latest developments in stem cell research.

Of the many items, two in particular struck me: a project by the Mayo Clinic to grow stem cells at the International Space Station as a pathway to treatments for stroke and the use of inkjet printing technology to print eye cells to potentially treat retinal disease and help cure blindness.

Although a number of news reports echoed the optimism of the summit (click here for one example), at least one carried the reminder that many attempts at developing stem cell treatments have failed.

Such failures are not surprising. In general, 90 percent of all clinical trials fail to produce a treatment. By their very nature, science and drug discover involve a long process of trial and error.

Stem cells capture our imagination because they come from our bodies. In this respect they differ from typical pharmaceutical agents such as vaccines and medicines, which involve introducing non-human agents into the body (such as dead viruses or chemicals). In addition, as the work of Dr. Nolta and others has demonstrated, stem cell research gives us a greater understanding of the function of the human body.

Stem cells comprise just one part of the toolkit for treating diseases. Despite the likelihood of a high failure rate in clinical trials, having them in the kit along with gene therapy and numerous other approaches increases the overall chances of discovering effective treatments, including Huntington's disease and other currently untreatable neurological disorders.

Next time: the stem cell summit, advocacy, and the future of CIRM.

(Disclaimer: I received a stem cell summit scholarship from CIRM, which covered the cost of registration. CIRM officials did not in any way influence or control what I have written here.)

Monday, November 04, 2013

One year out of the terrible, lonely Huntington’s disease closet

Today marks one year since I definitively exited the terrible and lonely Huntington’s disease closet.

On November 4, 2013, my article “Racing Against the Genetic Clock” appeared online in the The Chronicle of Higher Education, the first time I shared my story in a mainstream publication (click here to read the article). It was also published in the November 9, 2013 print edition.

By revealing publicly that Gene Veritas was Professor Kenneth P. Serbin, a historian who specializes in Brazil, I took one of the most important steps in my 15-plus years of HD advocacy.

I no longer hid the potentially devastating truth about my genes: I carry the mutation for Huntington’s and will inevitably develop its deadly symptoms.

After guarding the secret of my risk for HD ever since my mother’s diagnosis in late 1995, I could fully engage in the battle against, as I wrote, “the stigma and fear surrounding Huntington’s and other neurological disorders. In so doing, I also hope to help galvanize increased support for brain research.”

I also could finally begin to integrate my academic career with my HD advocacy and my growing, profound interest in the history of science, technology, and medicine.

Gene Veritas (aka Kenneth P. Serbin) (photo by Bianca Serbin)
Big strides

Over the past year, I have made important strides in my advocacy.

With the publication of my family’s story, many people within my circle of friends and professional colleagues learned in detail about the challenges posed by orphan and genetic diseases, not just the symptoms but the serious social implications.

For the first time, I publicly raised funds for the cause, bringing in more than $16,000 to the Serbin Family Team at the April 14 Team Hope Walk of the San Diego Chapter of the Huntington’s Disease Society of America (HDSA).

At the University of San Diego (USD), my employer, I spoke openly about Huntington’s disease. Through colleagues I even learned of other families in the area facing the risk of HD. (Click here to read the feature story on me and my family on the university’s website.)

In the spring, I participated in the first meeting of faculty members aiming to establish an undergraduate concentration in medical ethics. I’ve also discussed HD and genetic testing with a USD biologist studying the ethical dilemmas raised by genetic practices.

The highlight of my academic work this year took place at the World Congress on Huntington’s Disease from September 15-18 in Rio de Janeiro, Brazil. I gave a presentation on coping with HD. I also reported on the event and posted more than 30 videos I had shot. In São Paulo, on September 21, I delivered a speech on HD and bioethics.

As I wrote, “I felt vindicated in my decision to go fully public about HD … and meld my professional and personal lives with my advocacy.”

Concern about health care

On October 16, as the U.S. Congress voted to end the two-week government shutdown resulting from Tea Party Republicans’ attempt to block Obamacare, I published a blog article describing how I had revealed my gene-carrier status to my health plan.

At the suggestion of one of the leaders of the HD movement, I sent a copy of my article to Speaker of the House John Boehner, who has dueled politically with President Barack Obama over the Affordable Care Act.

“I am dismayed at how the national debate over health care has taken an unhealthy and highly unproductive turn,” I wrote to Boehner. “Having seen my mother succumb to Huntington’s disease, and facing the threat of that disease myself, I have witnessed firsthand, and experienced, the terrible drama of our inadequate system of care for people with neurological and other disorders that carry a large stigma…. Please do your utmost to bring better care for all Americans and create a more productive national dialogue.” (So far I haven’t gotten a response.)

On October 20, the Brazilian newspaper O Estado de S. Paulo published a Portuguese-language opinion piece by me discussing my message to Boehner and the embarrassing behavior of the U.S. political leadership. I wrote that citizens like me were anxious to see the country get back on track with its economy and health care system.

A scholar-advocate

Last night, I spoke to a good friend and long-time professional colleague who provided frequent support over the past two-and-a-half years as I prepared to make my definitive exit from the HD closet.

“Tomorrow is the first anniversary of my article in the Chronicle,” I told him.

“Are you glad you did it?” he asked.

“Of course!” I responded.

“And the sky didn’t fall!” he rejoined.

Indeed, the days of the terrible and lonely HD closet are now in my past.

The memories, however, are still fresh. And when the nation debates health care as it did again recently during the shutdown, I fear a return to that painful period of my life in which I felt compelled to hide the threat of HD.

I also know that thousands of HD families around the world remain in the HD closet – because of lack of knowledge about the disease, stigma, fear, and the devastating symptoms.

I now refer to myself as a “scholar-advocate.”

Very soon I plan to even better integrate my identity, setting up an e-mail signature with both my real name and pseudonym and links to HDSA, my blog, and my Chronicle article.

With this new dual public identity, I will forge ahead as I seek to promote collaboration in the HD community, greater awareness about the disease and its many challenges, and an end to the fear of sharing our stories.