By failing to update their warnings, drug regulators are letting patients down

US drug regulator the Food and Drug Administration (FDA) has issued warnings about possible side effects of taking varenicline. Varenicline (marketed as Chantix in the US, and Champix in the UK) is a drug which can help people stop smoking. The FDA’s warnings are out of date, do not reflect the scientific evidence, and urgently need to be updated. They may have led the public and clinicians to incorrectly believe that there was strong scientific evidence that varenicline causes or exacerbates mental health problems. Given varenicline is the most effective way to successfully stop smoking, these safety concerns may have resulted in fewer people successfully stopping smoking.

A brief history FDA’s warnings over varenicline

In May 2006 the FDA approved varenicline for use as a medication to help people stop smoking. This was the first treatment licensed for smoking cessation since 1997, and initial evidence suggested that people who took it were more likely to successfully stop smoking. However, it was not long before concerns were raised that people prescribed varenicline were experiencing mental health side effects. Newspapers reported a series of anecdotes that people taking varenicline had suicidal behaviour. The FDA’s Adverse Event Reporting System (AERS) suggested patients prescribed varenicline were more likely to report suicidal behaviour than patients prescribed other medications. The key question was, are these differences a result of taking varenicline, or is it just that patients prescribed it had a higher risk of these events even before they were prescribed treatment? Were they due to correlation or causation?

The FDA attempted to answer this question in a safety review that was published in February 2008. They concluded that “[varenicline] may cause worsening of a current psychiatric illness even if it is currently under control and may cause an old psychiatric illness to reoccur.” In July 2009, after pressure from the media and consumer groups, the FDA went further, mandating that varenicline carry a “Black Box warning”. Black Box warnings are the FDA’s strongest warning about possible side effects of drugs. The Black Box warning for varenicline highlights “the risk of serious neuropsychiatric symptoms in patients using these products”. Symptoms included changes in behaviour, hostility, agitation, depressed mood, suicidal thoughts and behaviour, and attempted suicide.

The FDA then commissioned two large observational cohort studies to examine the risks associated with varenicline. They also instructed Pfizer to conduct a large randomised trial to investigate the side effects of varenicline in people with mental health problems.

Results from the observational studies were reported in October 2011. In both studies people prescribed varenicline had similar risks of being hospitalised for psychiatric problems as patients prescribed nicotine replacement therapy – in other words, there was no evidence of increased risk. However, these were observational studies, rather than experimental (randomised trials), so could not prove that varenicline did not cause adverse outcomes. However, most epidemiologists would regard these studies as more reliable evidence than the anecdotal case reports and newspaper reports which originally raised concerns about these risks. Nevertheless, in response to this new evidence, the FDA “determined that the current warnings in the varenicline drug label, based on post marketing surveillance reports, remain appropriate” and did not remove the Black Box warning.

Meanwhile, further observational studies were amassing evidence about whether varenicline use is associated with adverse events. In 2009, our colleagues found no evidence that patients in UK prescribed varenicline had higher risks of suicidal behaviour. In 2013, we updated this evidence to include over 100,000 patients, and again found that patients prescribed varenicline had similar risks of suicidal behaviour and similar rates of self-harm. In 2015, we systematically reviewed the literature of randomised controlled trials, and again found that participants given varenicline had similar risks of suicide and self-harm as those given placebo.

In March 2015 the FDA issued a further update. Despite mounting evidence about the safety of varenicline, they did not change their warnings. In 2016, the randomised controlled trial the FDA commissioned reported its findings. This trial randomised 8,144 people to receive varenicline, nicotine patch, bupropion or placebo, and found that people allocated to varenicline rather than nicotine replacement products experienced fewer moderate and severe mental health adverse events. The European Medicine Agency, which regulates pharmaceuticals in Europe, recently updated the information it provides about varenicline. In contrast, to date the FDA has refused to update its warnings.

Correlation does not equal causation

Patients who take medications are different from the general population. This means that even if patients prescribed a drug are more likely to have a particular adverse event this does not necessarily prove that these events are caused by the drug. In the case of varenicline, people who smoke are different from the general population on average; they are usually poorer, sicker, and more likely to have mental health problems. So the fact that patients taking varenicline reported higher rates of suicidal behaviour than patients prescribed other drugs in the FDA Adverse Events Reporting System, may have been because these patients were at higher risk of these events, before taking varenicline. This means these adverse events are unreliable evidence of the difference when taking varenicline or other nicotine replacement products.

Spurious safety warnings can be extremely harmful

In 1998 a paper was published which suggested that there might be an association between taking the measles, mumps and rubella (MMR) vaccine and developing autism. These claims were false, and multiple, large, well-conducted studies have proven that these claims were false, and the MMR vaccine is not associated with, and does not cause autism. Nevertheless, these warnings led to a substantial fall in vaccination rates, and an increase in cases of measles. So it is vital for regulators to distinguish between side effects which are caused by drugs, and potential events which the drugs do not cause. These could be events that are correlated with a medication, or risks for which the regulator does not have any reliable evidence.

In 2007 3.9 million patients took varenicline in the US. In 2012, after the safety warnings were issued, only 1.2 million patients took varenicline. Thus a potential cost of issuing safety warnings is that fewer patients take otherwise effective medications.

What should we do now?

From the first warnings about potential adverse effects of varenicline on mental health in November 2007 to today, 4.1 million people are likely to have died from smoking related disease in the US alone. The FDA’s Black Box warning of mental health problems associated with varenicline is inconsistent with the latest scientific evidence. Ultimately, it could discourage people from using the most effective smoking cessation treatment. In 14^th of September 2016, the FDA’s expert advisory group for drug safety met and again reviewed the evidence about the side effects associated with varenicline. The vote was close: they voted 10 to 9 in favour of advising the FDA to remove its warning. However, given the committee’s lack of consensus, it is not clear if the FDA will follow their guidance. In our opinion, given the evidence, the FDA needs to urgently revise this safety warning.

Dr Kyla Thomas is a National Institute for Health Research funded Clinical Lecturer in Public Health Medicine based at the University of Bristol and an Honorary Consultant in Public Health. She tweets sporadically @drkyla_thomas. Dr Neil Davies is an epidemiologist based in the MRC Integrative Epidemiology Unit at the University of Bristol. He occasionally tweets from @nm_davies. These views are their own.

A longer more detailed version of this blog post was published in the Addiction journal available here.

By failing to update their warnings, drug regulators are letting patients down

European Regulators Investigate Cardiovascular Safety Of Ibuprofen

The European Medicines Agency announced on Friday that it had initiated a overview of the cardiovascular safety of ibuprofen when taken in high doses over  an extended period of time. The review will be carried out by the Pharmacovigilance Risk Assessment Committee (PRAC).

The EMA explained that people taking ibuprofen ought to proceed to take it as extended as they follow the package deal label or the guidelines of their doctor or pharmacist.

The cardiovascular threat of all non-steroidal anti-inflammatory medicines (NSAIDs) have been below near scrutiny for a amount of years. The enhanced danger connected with a single group of NSAIDs, the COX-two inhibitors, has been acknowledged for much more than a decade. Researchers have also located evidence for cardiovascular difficulties with the NSAID diclofenac.

The agency mentioned it had located no proof for a problem in men and women taking doses significantly less than two,400 mg/day or for quick periods of time. ”Ibuprofen is one of the most broadly employed medicines for soreness and inflammation and has a properly-known safety profile, specifically at normal doses,” the EMA explained.

European Regulators Investigate Cardiovascular Safety Of Ibuprofen

Federal Regulators Shove Very first Amendment Down Slippery Slope With College Ad Ban Proposal

Consider of the kids!

That phrase is a “tried-and-correct debate stopper,” ethicist Jack Marshall writes, “because of its ability to inhibit rational considered.” It is no wonder, then, that skilled activists and government regulators usually cloak actions which may well otherwise be highly questionable (and unconstitutional) in the attractive mantle of safeguarding America’s youth.

For instance, government routinely invokes safety of youngsters as a justification for restricting industrial speech. Three many years in the past, a triumvirate of federal companies experimented with to limit kids’ publicity to foods and beverage advertisements by way of an informal guidance document. Fortunately, that work fell flat. But Washington’s appetite for limiting “disfavored” speech—in the curiosity of those ubiquitous children—is in no way sated, as a lately proposed U.S. Department of Agriculture (USDA) regulation reminds us.

The February 26 proposal dictates how nearby schooling companies (i.e. college boards) are to devise “local college wellness policies.” The USDA Secretary, joined by First Lady Michelle Obama, announced the rule at a White Property event and proudly touted the proposal’s unprecedented prohibition of advertising for picked food items and beverages on college house. That portion of the proposal violates the Very first Amendment, a conclusion which WLF shared with USDA last week in its formal remarks to the agency.

USDA asserts that its actions are required to boost little one nutrition. The proposal advances that interest in a number of ways that are not constitutionally suspect. It demands that school boards end the sale of “competitive foods” (i.e. items that are not covered by subsidized college lunch applications) which fail to meet federal “Smart Snacks” guidelines (these flowcharts demonstrate what is “Smart”). The proposal also stresses the significance of “nutrition promotion” and encourages the two private marketing for “Smart Snacks” and college training efforts such as integrating dietary messages into classes (necessary reading through of “Ten Apples Up On Top” in math, probably) and posting of inspirational signage in dining regions (possibly “ Kale is for Kids!” or “Chia Pet Says: ‘Eat Chia Seeds!’”).

USDA emblem (Photograph credit: Wikipedia)

But these measures weren’t enough for USDA. The proposal also prohibits marketing and advertising of items that do not measure up to Intelligent Snacks requirements. USDA Secretary Vilsack justified the ban by remarking, “If you cannot promote it, you ought not to be able to market place it.” That makes for a wonderful sound bite, but it’s not a winning constitutional argument. Non-Wise Snacks are not akin to tobacco or alcohol, which minors can’t buy. Little ones can lawfully get these food items and drinks and carry them to college. So USDA can’t potentially argue that it is banning speech proposing an unlawful transaction, speech which the First Amendment does not defend. The proposal does, nonetheless, favor some speech more than other speech based mostly on the articles of the advertisement. The First Amendment prohibits this kind of discrimination, even for commercial speech. Also, the Supreme Court permits government to restrict business speech only as a measure of last, not 1st, resort. USDA, in other phrases, should figure out if its carry out ban (no income of non-Smart Snacks) meets its nutrition promotion objective first, before it targets speech about “unhealthy” meals.

Federal Regulators Shove Very first Amendment Down Slippery Slope With College Ad Ban Proposal

New Jersey regulators move to bar British surgeon struck off in Uk

A physician who was banned from practising in Britain following becoming convicted of the manslaughter of a patient fled to the US, reinvented himself as a pioneering spine surgeon and severely injured a quantity of individuals, in accordance to a damning report commissioned by state authorities in New Jersey.

Dr Richard Kaul was advised by a judge in London in 2001 that his profession was “in ruins” when he was identified guilty of causing the death of Isatu Bangura, who suffered cardiac arrest following he injected her with sedatives and failed to keep track of her condition.

Yet he moved to the United States and became a multi-millionaire by restyling himself as an skilled in rewarding keyhole back surgical treatment, regardless of his only hands-on coaching in the specialism being a two-week course in South Korea.

Kaul, 49, was due to be stripped of his licence at a meeting of New Jersey health care regulators on Wednesday following becoming ruled a “danger to the public” by a judge as part of a 3-month specialist prosecution by state authorities.

“He never should have performed any spinal surgeries,” Judge Howard Solomon wrote in a 105-webpage determination, concluding that Kaul engaged in “gross negligence, gross malpractice and gross incompetence” by working on sufferers “without enough instruction, abilities and competence”.

Kaul’s repeated violations of the laws and laws governing physicians in the state “warrant absolutely nothing much less than the revocation of his medical licence”, the judge concluded.

The situation has raised considerations about the security of ambulatory surgical centers (ASCs) like Kaul’s, which provide very same-day procedures that are quicker and significantly less costly than in conventional hospitals, but are not topic to the identical regime of inspections and checks.

In 2012, New Jersey governor Chris Christie vetoed a bill accredited by state legislators that would have ensured all such surgeries in the state were regulated, partly on the grounds that it would cost too considerably for his administration to inspect them.

David Knowlton, president of the New Jersey Wellness Care Quality Institute (NJHCQI), a non-revenue watchdog group, said that harmful medical doctors such as Kaul “probably would have been caught” under the vetoed regulation regime.

A dossier for the prosecution presented by one particular of Christie’s deputy lawyer generals argued that Kaul had performed complicated surgical treatment with “flagrant disregard” for his inadequate qualifications.

It thorough the instances of 11 individuals who claimed to have suffered mistreatment at his hands among 2005 and 2012. Numerous of them limped to the witness stand to testify towards Kaul and fought back tears during hearings at the office of administrative law in Newark last 12 months.

Kaul had charged them tens of thousands of dollars for operations such as the fusing with each other of troublesome vertebrae. Some did not even need to have the surgeries, the judge ruled, even though other individuals suffered botched procedures that had to be redone right after they caused excruciating soreness.

James Jarrell, a 62-yr-old former development employee at Ground Zero, mentioned he felt “crippled” right after a fusion by Kaul – which was later declared pointless – left him struggling to stroll and unable to operate. “He was terrible,” mentioned Jarrell. “I can barely carry myself to phone him a doctor”.

Study compiled in 2011 by the NJHCQI discovered that a single in 4 ambulatory surgical centers in the state had been cited by the department of wellness for “immediate jeopardy”, meaning that their failure to comply with regulations had induced, or was most likely to trigger, “serious injury, harm, impairment or death to a patient”.

Surgeries had been inadequately sanitised, workers were recorded “walking through the sterile working room in street clothes”, data were not appropriately finished, and single-use healthcare products was utilised “more than as soon as, on far more than one particular patient”, according to the investigation.

“I would not advise any of my close friends or family members to have surgical treatment or procedures accomplished at any unlicensed surgical practice,” Knowlton stated at the time. An energy to tighten the regulations on ASCs collapsed in the state assembly last 12 months.

Kaul was also left free of charge to practise in spite of New Jersey authorities suspending him for 6 months and fining him $ 10,000 in 2003 when they discovered by way of a tipoff that he had failed to declare his English manslaughter case on his application to renew his American health-related licence.

Kaul mounted an elaborate PR campaign to fight off the allegations, claiming to be the victim of a political conspiracy co-ordinated by Christie and mainstream spine surgeons who, he stated, were resentful after shedding enterprise to him. “This just goes to demonstrate that in New Jersey you can not get a fair shake if you are on the wrong side of the political establishment,” he mentioned shortly following the judge’s verdict was published.

Kaul published glossy pamphlets and petitions that purported to show signatures of pleased customers. He wrote a string of information articles or blog posts defending himself, and posted publicity movies, like 1 exhibiting an obvious former patient happily skiing.

He published secret surveillance footage of an additional patient, attempting to demonstrate that her injuries had been faked, in spite of the clip displaying she was bent double. His publicist even posed as a journalist and interviewed a state health-related official in an energy to expose the supposed conspiracy.

In the end, nevertheless, he failed to rebut the allegations. “It has been confirmed, properly past a preponderance of the credible proof, that [Kaul] not only poses a danger to the public, but has violated numerous statutes and regulations governing the practice of medication and surgical treatment in this state,” wrote Solomon.

Now owing hundreds of thousands of dollars in legal fees, damages and unpaid taxes, and with his surgery in New Jersey bankrupted, a defiant Kaul stated that he planned to concentrate on treating poverty-stricken people in Congo, as portion of The Spine Africa Project, a charity he founded. “I do not see why it must cease me assisting people with my capabilities,” he explained of the judge’s determination.

New Jersey regulators move to bar British surgeon struck off in Uk

BPA Publicity Is "Too Reduced to Trigger Harm," In accordance To Regulators. But You"d In no way Know That From The Media Coverage.

Suppose a new authoritative evaluation revised the estimate of your lifetime odds of being struck by a meteorite — from, say, a single in a hundred billion to a single in 10 billion.  Should that tenfold boost in the probability make you any more concerned?  No– since both values are someplace between negligible and infinitesimal.

A similar and much more pertinent query of that kind was posed by an announcement earlier this month by the European Foods Security Authority of a new “tolerable daily intake” (TDI) of a typical industrial chemical called bisphenol-A (BPA).  (BPA has been utilised for the past half century to make shatterproof polycarbonate plastics and is an ingredient in the epoxy safety liners of foods and beverage cans that shield shoppers from meals poisoning.)

At the exact same time that regulators reduced the TDI for BPA, they emphasized that human exposure comes nowhere close to the new, stricter restrict – a essential point missed by a lot of journalists and commentators.

TDI is an assessment of a person’s highest everyday consumption of a substance that can happen each and every day for a lifetime with out appreciable risks.  It is based on studies of relevant animal species and is intentionally set extremely conservatively.  In 2010, EFSA assessed BPA and set a TDI of 50 micrograms per kilogram of body weight per day.  In the current announcement, EFSA up to date that evaluation, proposing a lowered TDI of five micrograms per kilogram of body bodyweight per day.

Chemical construction of bisphenol A. (Photo credit score: Wikipedia)

The updated, diminished TDI, which was proposed to reflect data from new studies that have become available given that 2010, represents a very conservative technique.

Taken at face worth, this TDI reduction might appear to be an indictment of BPA and to reflect a risk to human well being and, predictably, a lot of activists groups have touted the proposed modify as this kind of.  But EFSA’s most significant finding is buried deep in information reviews, if it is present at all: Even measured towards the proposed diminished TDI, “EFSA finds there is no overall health concern, as the highest estimates for mixed oral and non-oral publicity to BPA are three-five occasions lower than the proposed TDI, dependent on age group.”

Bolstering that conclusion is a related evaluation last 12 months by the U.S. Meals and Drug Administration, which concluded that “BPA is safe at the really reduced amounts that take place in some foods”–an evaluation “based on evaluation by FDA scientists of hundreds of scientific studies such as the most recent findings from new scientific studies initiated by the company.”

EFSA employed new data and details gleaned from more than 450 scientific research to propose the lower TDI, which is in essence a distinction without a difference: Even assuming the highest exposure estimates for any age group, from fetuses to the elderly, BPA consumption is well below the extremely conservative, up to date TDI.

Placing it another way, despite the fact that BPA’s TDI has been lowered, the sensible impact stays the exact same: No matter whether 50 or five micrograms per kilogram, the TDI is set at a degree to which people are not probably to be exposed.  Thus, reflecting a centuries-previous tenet of toxicology that “the dose tends to make the poison,” BPA is not harmful to human wellness simply because the dose is far as well lower.

One particular crucial takeaway from this revelation is the need to have to consider media reviews on chemical regulation with a big grain of sodium chloride.  The media like “if it bleeds, it leads” stories, specially if they involve particular activist-designated bogeymen, such as chemicals, nuclear electrical power and genetic engineering.  Often, the emphasis is on interest-grabbing headlines about shoddy research or created-up phenomena, this kind of as “BPA Exposure Linked to Prostate Cancer” or “Fukushima Radioactive Materials Washed Up on California Seashores.”  In this instance, even so, we have an exact, science-based mostly report that received uncritical, flawed media coverage.  One headline, for illustration, read, “EFSA Confirms the Hazards of BPA for Well being.”

EFSA’s tenfold decreasing of the TDI is analogous to  a tiny boost in thesa odds of being struck by a meteorite: There is no cause for heightened concern.  The actual story is that yet another mindful evaluation by a prominent regulatory agency has identified that BPA poses negligible danger to human well being.

BPA Publicity Is "Too Reduced to Trigger Harm," In accordance To Regulators. But You"d In no way Know That From The Media Coverage.