BMJ editor: Open letter to Roche about oseltamivir trial data

In BMJ:

Roche promised in 2009 to release full reports from clinical trials of oseltamivir in response to an investigation by the BMJ and the Cochrane Collaboration.  In this open letter to John Bell, regius professor of medicine at Oxford University and a Roche board member, the BMJ’s editor in chief further urges the company to disclose the full data.

Read the full letter here.

Background here.

Ben Goldacre on missing data and publication bias

Ben Goldacre at Strata Conference

Here is a video of Ben Goldacre speaking at the Strata Conference in London earlier this month (H/T Chris Southan).

I also recommend his book, Bad Pharma:  How drug companies mislead doctors and harm patients, which goes into detail on how missing data and publication bias distort the medical literature and harm patients.

 

Johns Hopkins to launch Center for Drug Safety and Effectiveness

Johns Hopkins is launching a new Center for Drug Safety and Effectiveness.  Via G. Caleb
Alexander,

On Wednesday, October 24, we will launch the Johns Hopkins Center for Drug Safety and Effectiveness, a collaborative effort of the Bloomberg School of Public Health and Johns Hopkins Medicine.  The Center will fulfill its mission by supporting individuals engaged in research, training, clinical programs and public service to optimize the safe and effective use of prescription medicines in the United States and around the world.
We are delighted that Dr. Mark McClellan will deliver the inaugural lecture for the Center on October 24 at 4:00 PM, with a reception to follow.

Article in Korean Circulation Journal retracted for plagiarism

In March of this year, Larry Husten reported on CardioBrief that a review article in the Korean Circulation Journal by Chang Gyu Park and Ju Young Lee appeared to plagiarize from a review article in the Journal of the American College of Cardiology by Franz Messerli and Gurusher Panjrath.  In April, Husten reported that the article was being investigated by the publishing committee of the Korean Society of Cardiology and Korean Association of Medical Journal Editors.  It has just come to my attention that the KCJ article has been retracted.  Here is the notice:

On July 31, 2011, Korean Circulation Journal (KCJ) published a review article by Park et al. regarding the J-curve in hypertension and coronary artery diseases. However, a possibility of plagiarism has been raised in this article.

The Editorial Board of KCJ has examined the review article and has requested the Committee for Publication Ethics of Korean Association of Medical Journal Editors (KAMJE) to provide an adequate conclusion. After thorough investigation, the Committee for Publication Ethics of KAMJE and the Editorial Board of KCJ have concluded that the article is seriously plagiarizing from an article by Messeri (sic) et al.

In this regard, on May 8, 2012, the Executive Committee of the Korean Society of Cardiology has finally decided to retract the article completely. We apologize for any inconvenience this may have caused.

My earlier post on this is here.

Women vote

Compare and contrast: two review articles on ezetimibe

For the past several years I have been following the ezetimibe controversy (see these posts on Gooznews and this blog here, here, here, here, here, here, here, here, here, here, here, here, here, here, and here).  In my view, we continue to lack evidence of ezetimibe’s clinical benefit, or even safety, 10 years after FDA approval.

I have a Google Scholar Alert for ezetimibe, so often links to articles on ezetimibe arrive in my email inbox.  Recently, two review articles on ezetimibe were published that were a study in contrasts.  The first, by Sheila Doggrell, takes a skeptical view toward ezetimibe and reaches the following conclusion:

The comparison of clinical trials with simvastatin and ezetimibe alone and together has clearly shown that simvastatin decreases LDL-cholesterol and this is associated with improved clinical outcomes. Also, ezetimibe alone or in the presence of simvastatin lowers LDL-cholesterol. However, ezetimibe alone or in the presence of simvastatin has not been shown to have any irrefutable beneficial effects on clinical outcomes. Thus, until/unless the use of ezetimibe is clearly shown to improve clinical outcomes, its use should be largely restricted to clinical trials investigating clinical outcomes, and ezetimibe should not be used routinely in everyday practice.

The second, by Binh An Phan, Thomas Dayspring and Peter Toth, takes a much more optimistic view:

In the current treatment of cardiovascular disease, many subjects fail to reach LDL-C targets or remain at high risk for CHD events despite optimal statin and medical therapy. Ezetimibe inhibits intestinal cholesterol absorption and is effective in lowering cholesterol as monotherapy or in combination with statins in several populations, including those with FH, sitosterolemia, and insulin resistance. Significant controversy has been generated regarding the clinical effectiveness of ezetimibe, particularly after the publication of ENHANCE and ARBITER-6 despite both trials having significant methodological flaws that limited their ability to evaluate the benefit of ezetimibe. Growing data suggest that ezetimibe in combination with statin has a positive effect on the progression of atherosclerosis and reduces cardiovascular events in subjects at risk for CHD, including those with chronic kidney disease. Results from IMPROVE-IT are forthcoming and may help to guide better the use of ezetimibe in very high-risk CHD populations. Until that time and based upon the current available data, ezetimibe should remain a viable adjunct to statin therapy in the treatment of hypercholesterolemia.

Dr. Phan and colleagues find reasons to dismiss the negative results of ENHANCE and ARBITER 6-HALTS as due to “methodological flaws” and use copious amounts of hand-waving to find support for ezetimibe in the SEAS and SHARP trials, even though those trials compared the combination of simvastatin and ezetimibe with placebo and thus can tell us nothing about what, if anything, ezetimibe added to those results.  Could the differing views of Doggrell and Phan et al. have anything to do with the fact that Dr. Doggrell declares no conflicts of interest relating to ezetimibe, while Phan, Dayspring and Toth declare the following conflicts:

Binh An Phan is a speaker for Abbott. Thomas Dayspring consults for Abbott, GSK, Health Diagnostic Labs, Kowa Company, Eli Lilly, Merck, Genentech, The Roche Group, Genzyme, and Omthera. He is on the Lecture Bureau for Abbott, GSK, Health Diagnostic Labs, Kowa, Eli Lilly, LipoScience, Merck. Peter P Toth is a speaker for Abbott, AstraZeneca, Amylin, Boehringer-Ingelheim, GSK, Kowa, Merck and consults for Abbott, Aegerion, AstraZeneca, Atherotech, Genzyme, Genentech, Kowa, and Merck.

It is not too surprising that authors who are consultants and on the speaker’s bureau for Merck would take a favorable view of ezetimibe.  What is surprising is that anyone would take their word for it.

References

Doggrell SA. The ezetimibe controversy — can this be resolved by comparing the clinical trials with simvastatin and ezetimibe alone and together? Expert Opin. Pharmacother. (2012) 13(10):1469-1480.

Phan BAP, et al. Ezetimibe therapy:  mechanism of action and clinical update. Vascular Health and Risk Management 2012:8:415-427.

Alzheimer’s disease, familial hypercholesterolemia, and clinical trials

Welcome Jesse Ballenger to the blogosphere.  Jesse is a historian who specializes in the history of medicine and is the author of Self, Senility and Alzheimer’s Disease in Modern AmericaGary Schwitzer alerted me to Jesse’s post on Gina Kolata’s recent Sunday New York Times piece, How Do You Live Knowing You Might Have an Alzheimer’s Gene?, as well as to the existence of his blog, To Conquer Confusion:  A Historian’s Perspective on the Science and Experience of Alzheimer’s Disease and Dementia.  Jesse has both praise and criticism for Kolata’s story, and his post brings needed perspective on the history of research on Alzheimer’s as well as on the choice on Kolata’s part to present only the very optimistic views of certain Alzheimer’s researchers who “say that within a decade there could be a drug that staves off brain destruction and death.”  I agree with him that “Kolata should have raised questions about this claim, and talked to experts not directly involved in the research who are far less optimistic about its potential to so quickly lead to effective treatments.”  So please go read his post.

Kolata describes an American family in which many members are afflicted with early-onset Alzheimer’s caused by an autosomal dominant mutation.  Because the mutation is dominant, each affected family member has a 50% chance of passing the mutation on to each of his or her chidren.  The story is tragic and brought to my mind the emotions I experienced in 2001, when my daughter was diagnosed with heterozygous familial hypercholesterolemia (heFH) at age 8.  This is a genetic disease that causes very high LDL-cholesterol from birth and if untreated leads to early heart disease in a high percentage of patients.  At the time, I was only vaguely aware that there was a history of heart disease in my husband’s family and that his mother had had a heart attack.  At the urging of my daughter’s cardiologist, we asked my husband’s mother for more details and learned that her father had died of a heart attack at 35 and her brother, her only sibling, died of a heart attack at 40.  My mother-in-law suffered her first heart attack at age 58.  My husband inherited the mutation but has only a mild case, and my mother-in-law had never been told anything other than that she had high cholesterol, so my daughter’s diagnosis was the first occasion anyone in the family realized that the family history of early heart attacks was caused by a mutation.  Fortunately, unlike the case of Alzheimer’s disease, the risk associated with heFH can now be greatly reduced if patients are treated from an early age with a statin.  Homozygous FH patients, who have two copies of an FH mutation, are not so lucky and usually must undergo LDL apheresis on a regular basis.

Back to Kolata’s article:  I want to expand a little on a comment I wrote on Jesse’s post.  My comment related to Kolata’s comparison between the development of statins and the development of drugs to prevent Alzheimer’s.  As described in Kolata’s article, certain drugs in development are being tested in persons who are carriers of an Alzheimer’s mutation but have not yet developed symptoms of the disease.  The patients will receive one of several drugs or a placebo, and will be monitored for the development of certain biomarkers and, importantly, for the development of memory problems.  Kolata states that “Statins, the drugs that are broadly prescribed to block the body’s cholesterol synthesis, were first found effective in studies of people who inherited a rare gene that led to severe and early heart disease.”

The disease Kolata is presumably referring to is FH, but whether her statement is accurate depends on how one defines “effective.”  Early in the development of statins, after they had been tested in animals, they were given to a few patients with homozygous FH and heterozygous FH, as described in this 1992 article in the Journal of Lipid Research.  However, at that time the drugs were only being tested for their ability to lower LDL and for safety.  LDL-lowering is a surrogate endpoint.  If by “effective” one means the prevention of heart attacks and other cardiovascular events, the statement is inaccurate. When statins came on the market in the late 1980s, FH patients were excluded from the clinical trials that were conducted to show than statins not only lowered LDL but also prevented heart attacks, strokes and death. It was considered unethical to give an FH patient a placebo. To this day, no randomized controlled trial of statins with clinical endpoints has been done in FH patients and it is unlikely that one will ever be done. 

Direct evidence of the effectiveness of statins in heFH includes two observational studies, one of patients in a British registry and one of patients in a Dutch registry.  In addition, the ASAP trial compared a high dose statin with a moderate dose statin in heFH patients, but the endpoint was carotid intima media thickness, “IMT” (i.e., thickness of the carotid artery measured by ultrasound).  There was also a trial of statin vs. placebo in teenage FH patients using IMT as an endpoint.  In addition, many trials of statins have shown a benefit in non-FH patients with elevated LDL and it is reasonable to assume that this benefit would carry over to FH patients.

Thus, the comparison between the trials of investigational Alzheimer’s drugs in mutation carriers and the testing of statins in FH patients is not particularly apt.  The Alzheimer’s trials in patients with hereditary Alzheimer’s will be measuring the development of clinical symptoms of Alzheimer’s (i.e., memory loss, confusion, etc.).  The tests of statins in FH patients looked only at the effect of the drug on a surrogate endpoint (i.e., LDL-lowering) and no trials with clinical endpoints (i.e., heart attacks and other cardiovascular events and death) were done in FH patients.

References

Endo A.  The discovery and development of HMG-CoA reductase inhibitors. J. Lipid Res. 1992 33:(11) 1569-82. 

Neil A, Cooper J, Betteridge J, et al. Reductions in all-cause, cancer, and coronary mortality in statin-treated patients with heterozygous familial hypercholesterolaemia: a prospective registry study. Eur Heart J 2008; 29: 2625-2633.

Versmissen J, Oosterveer DM, Yazdanpanah M, et al. Efficacy of statins in familial hypercholesterolaemia: a long term cohort study. BMJ 2008; 337: a2423.
 
Sijbrands E.  Inhibition of PCSK9 in Familial Hypercholesteolemia.  The Lancet, Early Online Publication, 26 May 2012.
 
 

“Be Brave”

In January, I blogged about an open letter by Harlan Krumholz and Rodney Hayward to the panel that is currently engaged in writing new guidelines for cholesterol management.  As discussed in my post, their letter challenges the committee to replace the current “treat to target” paradigm with a “tailored treatment” approach.  This has been one of my more popular posts of all time, and people often find my blog by Googling “Krumholz Hayward open letter” and the like.  It also has been discussed on CardioExchange.  So I knew their paper had created a bit of a buzz in the cardiology community.  Well, it appears that some in that community are not happy that someone is challenging the current paradigm.  Dr. Krumholz reports on CardioExchange that he was approached by an influential person and asked to stop speaking out on the new approach he is advocating:

I had an experience the other week that reminded me that speaking your mind has its challenges. I was approached by someone with influence who asked me to cease my discussions on a particular topic. The reason was oblique – and I was told that people are viewing me negatively because my views are strong and wondering if there are conflicts of interest that are influencing me. In essence, I was told that people are whispering about me – though no names were given.

Now this topic was part of a scientific debate that has strong implications for guidelines and performance measures – and, well, patients. It is a situation where I am questioning conventional wisdom – and the long held beliefs by many individuals. I am trying to do so respectfully – and through the use of evidence – but still it is questioning dogma.

This conversation prompted me to write a message to my younger colleagues urging them to stand up for what they believe – and be willing to speak truth to power. I quote my friend Victor Montori, who eloquently advised a junior colleague about how to manage a concern about whether to express an opinion that was likely to be viewed negatively by her superiors. That person had been told to hold opinions tight until he had more grey hair. Victor starts by saying: ‘I have struggled with this issue for years. Turns out that this is a common struggle for those who find themselves unable to stay silent in the face of waste, error, low integrity, or abuse.’

The message Dr. Krumholz wrote is in the form of an editorial in Circulation:  Cardiovascular Quality and Outcomes, entitled “A Note to My Younger Colleagues … Be Brave.”  The editorial is open access, so I urge you to go read it in its entirety, but I’m going to quote this paragraph, which seems key:

If you take the path toward clarity, I guarantee that you will occasionally find people who will disparage you. They may seek to undermine you, find ways to marginalize you, and try to incriminate you. They may come from directions that surprise you. Powerful ideas often attract attacks that focus more on individuals than ideas. If you raise inconvenient truths or voice uncomfortable opinions, particularly if they threaten someone’s comfortable status quo, then you will discover much about the character of those with whom you disagree. But always take the high road, engage in dialogue about ideas and evidence, and be motivated by the opportunity to best serve patients and the public. You will not regret it.

Although I am not a physician, I certainly recognize and have experienced the issues Dr. Krumholz is describing in my own life.  Speaking uncomfortable truths often isn’t considered nice and doesn’t win popularity contests, but it is necessary for progress to be made.  So I will keep covering this controversy, and I invite you to read Dr. Krumholz’s editorial and then let me know your thoughts.

Addendum:  Here are comments by Ben Goldacre on Dr. Krumholz’s editorial.

More information on the PharmedOut conference

Via email from Adriane Fugh-Berman, selected abstracts for talks to be given at the third annual PharmedOut conference June14-15 at Georgetown University.  Please see my previous post for more information.

Regulating Medical Devices:  A Historical Perspective
Suzanne Junod, PhD, FDA

In drafting what would become the 1976 Medical Device Amendment, framers of the legislation sought to avoid some of the perceived shortcomings in the Kefauver Harris Drug Amendments which had been enacted after the thalidomide disaster in 1962.   In particular, they wanted to minimize adverse effects on an industry characterized by change and innovation.   At that time, however, there was no formal field of biomedical engineering while entrepreneurial zeal had begun to create indisputable regulatory issues.   Two of FDA’s first device “hires,” in fact, were a pair of engineers from NASA who concluded after a week on the job that conditions in the biomedical industry at that time were “appalling” and that standard engineering practices including back up systems, redundancies, and performance standards were simply non-existent.  Their insights, along with some early lessons learned “the hard way,” helped determine the unique ways in which FDA came to perceive its role in regulating medical devices, ways which differed markedly from those adopted for the regulation of new drugs.        

Direct-to-consumer advertising of prescription drugs: educating the public to misuse medicines
Barbara Mintzes, PhD, Therapeutics Initiative, British Columbia

Direct-to-consumer advertising of prescription medicines (DTCA) is arguably the most intensive “educational” campaign the US public receives on health issues. On average, Americans spend over 100 times as long watching TV ads about medicines as seeing a doctor each year. These ads include powerful messages about how to recognize and treat everyday and serious health problems, thresholds for care, the role and value of medicines, and expected health effects. Because the aim is to sell a medicine, this “education of a special kind” consistently supports overuse of medicines. I will use examples of recent DTCA campaigns to illustrate the gulf between the scientific evidence on treatment effects, appropriate use, and advertising messages.

Cardiovascular Devices:  The Role of Evidence in the FDA Approval Process
Rita Redberg, MD, Archives of Internal Medicine and UC San Francisco

There has been a rapid increase in complexity and use of medical devices, and many of them are cardiovascular. While some of these are life-saving, some are not, and even more have unknown clinical benefit. The current state of the quality of evidence prior to FDA approval of high-risk devices, with some examples and suggestions on how to improve this process so that patients could be more assured of benefits outweighing harms will be discussed.

 Left To Our Own Devices: A Surgeon’s Perspective
Amy Friedman MD, SUNY Upstate Medical University

A practical overview of the extent to which the typical clinician comprehends the regulatory pathway for medical devices will be presented. The extent to which clinicians are (or are not) familiar with the specific level of scientific data review that the medical devices they use in patients have undergone prior to gaining FDA clearance for human use will be illustrated. Two specific examples of medical devices that have been associated with significant patient harm, but were not previously recognized to be of concern will be used to illustrate the context of unknown patient safety and risk in the clinical arena.

Radiation From Medical Imaging:  A Hidden Epidemic
Rebecca Smith-Bindman, MD, UC San Francisco

Many clinicians are unaware of the amount of   radiation delivered from CT scans and other medical imaging techniques and extant data regarding increased risk of cancer from radiation exposure. This presentation will cover the  long-term risks of radiation from medical imaging,  legislative and quality improvement efforts around CT imaging, and present a framework for  reducing inappropriate imaging.

The Failure of the DePuy ASR Hip Prosthesis:  Implications for device safety initiatives
John Restaino, DPM, JD, MPH, University of South Carolina School of Pharmacy

The use of metal-on-metal bearings in total hip replacements has seen a sharp decline after a decade-long increase in their use, due to the recall of DePuy’s ASR prosthesis and the growing realization that metal-on-metal prostheses are associated not only with a high failure rates but also elevated systemic cobalt and chromium levels.  In the U.S., the ASR XL total hip replacement passed through the FDA’s 510(k) clearance process via the “substantial equivalence” route wherein companies need only to show that their product is similar to a ‘predicate’ device already on the market. In 2007 the Australian National Joint Replacement Registry reported that the ASR  required  revisions at a rate five times the expected rate at two years.  Following years of denial by DePuy that ASR implants were failing, ASR hip prostheses were recalled from the U.S. market on August 24, 2010.

The Supreme Court Strikes Back: IMS v. Sorrell – a Constitutional Right to Track Prescription Data?
Sean Flynn, JD, American University Washington College of Law

The Supreme Court ruled in IMS v. Sorrell that Vermont’s law restricting the use of prescription data to target pharmaceutical detailing to doctors violated the First Amendment of the Constitution. How broad is the right recognized? What room is left for states to control commercial access to confidential medical data for marketing purposes?

Federal Litigation
Julie Taitsman MD JD, Health and Human Services Office of the Inspector General

The Office of Inspector General for the U.S. Department of Health and Human Services (OIG) provides oversight for the Medicare and Medicaid programs.  This presentation will offer an overview of OIG efforts, via audits, evaluations, inspections, and enforcement actions, to combat unnecessary or harmful medical care.

Exploiting Homeless Mentally Ill Patients in Drug Safety Trials
Carl Elliott, MD, PhD, University of Minnesota Center for Bioethics, author of White Coat, Black Hat

For years pharmaceutical companies have paid marginalized populations to test the safety of new drugs.  In recent years, however, specialized psychiatric trial sites have begun recruiting mentally patients from homeless shelters, boarding houses and recovery facilities.  These subjects are often paid to test the safety of new drugs in Phase I trials, raising new ethical questions about exploitation of vulnerable populations.

Third Annual PharmedOut Conference

PharmedOut, a Georgetown University Medical Center-based pharmaceutical marketing research project, hosts its third annual conference focusing on the misinformation and patient harm that can occur from pharmaceutical and medical device marketing.

WHO:

  • Rita Redberg M.D., M.Sc., Archives of Internal Medicine Editor-in-Chief; professor of medicine, University of California, San Francisco
  • Carl Elliott M.D. Ph.D., author, White Coat, Black Hat; professor, University of Minnesota’s Center for Bioethics
  • Kay Dickersin Ph.D., director, Center for Clinical Trials, Johns Hopkins Center for Global Health
  • Julie Taitsman M.D., J.D., chief medical officer, Office of the Inspector General, U.S. Department of Health and Human Services
  • Sharon Treat J.D., executive director, National Legislative Association on Prescription Drug Prices
  • Joel Lexchin M.D., professor, York University
  • Donald Light Ph.D., professor, University of Medicine and Dentistry of New Jersey

For more information and to register, visit the PharmedOut conference page.

WHEN: Thursday, June 14 and Friday, June 15, 2012, 8:00 a.m. to 5:30 p.m. ET.

Thursday morning: Marketing of antipsychotic medications and other drugs
Thursday afternoon: Potential health risks of CT scans and other medical devices
Friday morning: Legislative and regulatory updates and solutions
Friday afternoon: Informing and protecting patients: The role of industry, media, and payers

WHERE: Lohrfink Auditorium in the Hariri Building, Georgetown University, 37th and O Streets, N.W., Washington, D.C., 20057.

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