Frequently sporting a $2 billion plus market capitalization, Acadia Pharmaceuticals brings to mind the work of Belgian surrealist Rene Magritte. His 1929 painting “The Treachery of Images” depicts a pipe with the inscription “This is not a pipe,” suggesting that an image and its meaning don’t necessarily correspond with each other.
In that vein, San Diego–based Acadia portrays itself as a pharmaceutical company but a Southern Investigative Reporting Foundation investigation has revealed that this is merely a clever facade. What lies below is a ruthless marketing entity whose pursuit of regulatory approval is best described as “loophole-centric.”
Nonetheless, in little more than two years, Acadia has gained a remarkable foothold in the pharmaceutical marketplace. The company generated $124.9 million in sales last year — a steep increase from its $17.3 million in 2016 — and its management has told brokerage research analysts to expect its revenue to more than double this year.
This is troubling since evidence is mounting that something is horribly wrong with Acadia’s sole drug, Nuplazid, an antipsychotic for Parkinson’s disease patients who experience episodic hallucinations and delusions. These are symptoms of a condition called Parkinson’s disease psychosis.
In April CNN uncovered a dramatic increase in the number of reports involving Nuplazid filed with the Food and Drug Administration’s adverse events reporting system. As noted in CNN’s reporting, an adverse event report does not mean that a drug is the cause of harm, but the document is used to help track possible issues.
In the wake of CNN’s story, FDA Commissioner Scott Gottlieb took the unusual step of telling lawmakers he would order his colleagues to “take another look” at the drug. In reply to a question about Gottlieb’s statement, Acadia sent the Southern Investigative Reporting Foundation a six-page press release from April 27 that asserted the FDA had not determined the drug posed a new risk and that doctors could continue to prescribe it.
Acadia has accomplished its growth in ways that have attracted intense regulatory scrutiny for other drug companies. The questionable practices include dispensing wads of cash to doctors to incentivize prescription writing and downplaying mounting reports of patient deaths.
Central to Acadia’s marketing is promotion of the faulty illusion that Nuplazid received FDA approval like any other drug — after successfully passing a series of clinical trials and evaluations for the efficacy and safety of its target population. But that’s not the case: Nuplazid essentially tiptoed into the market through the FDA’s equivalent of the cellar door, a legal but unusual method of entry. In other words, the mounting fatalities reported by CNN — and the spiraling costs for the drug that Medicare and private insurance payers are reimbursing — would never have occurred if Nuplazid’s manufacturer had followed the FDA’s standard drug-approval practices.
To understand what’s happened consider how Acadia and Nuplazid fit into the spectrum of the pharmaceutical industry’s efforts to combat neurodegenerative illnesses like Parkinson’s disease. According to the basics of brain chemistry, the substantia nigra pars compacta is a part of the brain stem whose key function is producing dopamine. That chemical transmits and processes signals between the brain cells that govern the human motor function, memory and the response to pleasure. Parkinson’s disease greatly diminishes the production of dopamine, and the neural pathways that carry dopamine deteriorate to a point where motion is mostly inhibited, leading to the muscular shaking and trembling that are the illness’ hallmark.
There is no cure for Parkinson’s disease, and despite prodigious amounts of medical research few therapeutic prospects are on the immediate horizon, even as a gallery of once devastating afflictions — from polio to HIV — have become preventable and treatable. This is not for want of trying: A long list of pharmaceutical companies have spent billions of dollars on research and development of various remedies for Parkinson’s disease only to be forced to abandon their efforts as clinical testing has revealed a lack of efficacy or safety (or frequently both.) A 2014 article in Alzheimer Research & Therapy pegged the failure rate at 99.6 percent (or 243 of 244) for all the trials from 2002 to 2012 for drugs to treat neurodegenerative diseases.
(Yet a 2017 medical journal article, assessing recent developments in Parkinson’s research, took the view that some cautious optimism is warranted, however.)
Since the mid-1960s treating Parkinson’s disease has typically involved prescribing levodopa, an amino acid that when taken with carbidopa can stimulate the brain’s dopamine production and restore much of a patient’s normal muscular function. But these improvements are often temporary since the disease’s progression degrades the cells storing the newly made dopamine. And taking levodopa carries complications, since an elevated level of it has been linked to episodic hallucinations, anxiety and muscle tremors — the very symptoms patients need addressed.
Standard antipsychotic drugs offer little respite since they block the very dopamine receptors that are already in bad shape. And what’s more, the FDA has issued a so-called black box warning on this class of drugs due to the elevated risk of a stroke for elderly people with dementia.
Enter Acadia’s Nuplazid. Developed in the late 1990s, the drug was designed to stimulate a subset of the brain’s serotonin receptors, or the proteins that govern memory, cognition and learning. Relying on initial laboratory results, Acadia’s management argued that the drug should be able to lessen or eliminate the episodic hallucinations.
There was just one hitch: Nuplazid, when tested on people, has been a bust from the very start. The drugmaker has had a brutal time demonstrating that the medication works better than a sugar pill. For example, Nuplazid’s first clinical trial closed in March 2007, without any posting of results. The drug’s third trial ended in March 2014 but did not indicate any meaningful statistical difference between the medication and a placebo.
Statistically speaking, a drug trial whose range of results include zero is judged to be a failure in that the drug’s therapeutic benefits are deemed to be too small to be of medical consequence.
Faced with a third failure, Acadia’s management might have decided it had reached the end of the road in trying to successfully develop the drug. But due to a provision of the Food and Drug Administration Safety and Innovation Act, however, in August 2014 Acadia was able to get Nuplazid classified as a breakthrough therapy, a status conferred on therapies with “substantial treatment effects” in their initial clinical tests.
It was a curious decision, given Nuplazid’s track record and the FDA’s plainly stated requirement for a breakthrough therapy to have “substantial treatment effects observed in early clinical development.”
For the FDA’s part, Dr. Mitchell Mathis, the agency’s division director of psychiatry products, told the panel reviewing Nuplazid in March 2016 that awarding the breakthrough designation hinged on the fact that no other FDA-approved drugs existed for treating Parkinson’s disease psychosis, as well as the frequency that these patients were being placed in nursing homes, which he called “a harbinger of death.”
More baffling still was the FDA’s willingness to assess whether Nuplazid worked based on “a negotiated evidentiary standard” that eliminated long-standing evaluation criteria.
In a November analysis, Quarter Watch, a publication of the Institute for Safe Medication Practices, flagged several ways the approval process of Nuplazid was unusual. For example, the FDA permitted the drug’s efficacy to be measured against an index of nine psychotic symptoms — as opposed to the standard 20-point scale — and the patients in the study were exclusively advanced cases (the most likely to be responsive to any drug). The agency also allowed Acadia to stage only a single trial (rather than the usual two) and to run it just in North America, where its previous results had been marginally stronger.
The physician responsible for leading the FDA’s medical review of Nuplazid, Dr. Paul Andreason, recommended against the medication’s approval, asserting there was an “unacceptably increased, drug-related, safety risk of mortality and serious morbidity.” Andreason worked for 26 years for the U.S. Public Health Service until leaving it in 2016; he spent 13 years with the FDA. His no vote was unusual in that it publicly revealed fault lines inside the division over what constitutes an appropriate level of patient risk.
Presumably, Nuplazid would not have been given a breakthrough therapy designation if the FDA’s psychiatry product unit’s leadership thought the drug was unlikely to win approval. As ProPublica recently described, over the last several years the FDA’s approach to the review process for Nuplazid and a series of other drugs has shifted to active cooperation with pharmaceutical companies in getting their drugs commercially launched — and away from serving as a strict arbiter of science and as a guardian of consumer safety.
“The FDA’s division of psychiatry usually reviews drugs with an eye towards a lifetime of use,” said Andreason, in an interview with the Southern Investigative Reporting Foundation. “We rarely saw high morbidity in something under our consideration; [Nuplazid] is the first drug where a psychiatrist has to understand life is at risk.”
Andreason’s presentation to the FDA committee, summarizing the research he conducted and outlined in the meeting’s transcript, described Nuplazid’s results as presenting a “safety signal.” Specifically, 49 of the 459 patients who took the drug on a long-term basis either died during the trial or within 30 days of its completion. This represents a fatality rate that’s higher than 10.6 percent. For the placebo group, according to the FDA’s briefing document, the figure was 1 out of 210 in a key trial. For the 901 patients who took at least one dose of Nuplazid, the associated fatality rate was slightly higher than 5.4 percent. Andreason also observed that the patients taking Nuplazid had about a two-and-a-half-fold increase in the observed risk ratio — defined as reported incidents of an infection, a patient’s deterioration in mental clarity or death — when compared with the rate for those taking the placebo.
After weighing this evidence, the panel determined there was a lack of a “pathologically unique” identifier connecting Nuplazid to the 49 deaths. And given the fact that on average people with Parkinson’s disease may live only two to four years after the onset of psychosis, the panel did not classify the number of deaths among trial participants as unusual.
Dr. Andreason did acknowledge data that pointed to some patient benefit from Nuplazid. (There were 14 reported cases of people who took Nuplazid and showed remission from Parkinson’s disease psychosis versus a single reported remission among the placebo group.) But he told the panel that the FDA’s “usual logic” would require rejecting the drug.
And Dr. Andreason had company within the FDA in expressing concern over Nuplazid’s safety. As part of the briefing document prepared for the review panel, division of psychiatric products chief Dr. Mathis wrote a memorandum noting that while the drug’s trial was considered “strongly statistically positive,” he and some of his colleagues were hesitant to accept that the reported results were indeed “clinically meaningful,” especially in light of the drug’s “toxicity” and substantial safety risk.
“‘Does this drug work and is it safe?’ are what every medical reviewer is supposed to evaluate,” said Dr. Andreason. “And my answers were ‘not really’ and ‘no.’”
He said that his recommendation to reject Nuplazid represented a statement.
“I wanted my vote to be a clear signal that our past experience had been that the FDA had not [approved drugs with this safety profile] and that by discounting this data they would be making a real policy change.”
But his views didn’t sway a majority of the panel’s members; Nuplazid gained approval for commercial use on a 12 to 2 vote.
So why did Dr. Andreason’s colleagues overlook his arguments?
“The philosophy of our health care system has changed: People and doctors are taking a different stance than 20 years ago,” Andreason said, describing the emergence of a worldview stressing the importance of family and caregiver perceptions of the quality of life for a Parkinson’s disease patient. This shift, he said, demands that doctors do everything possible to help family members with their efforts to make their loved ones comfortable.
“This is a total shift from the culture in the 1970s and 1980s where the pressure was on doctors to avoid risks to patient health,” he said. “And it’s unreasonable to think the FDA wouldn’t be aware of these pressures.”
According to the transcript of the panel’s hearing, one of the two votes against approval came from the consumer representative, Kim Witczak, who has publicly stated that her interest in the psychiatric drug-approval process emerged after her husband’s 2003 death. (In her role as head of a medication safety organization she founded in 2004, WoodyMatters.com, Witczak has shared her view that a key factor in her husband’s death was several then undisclosed side effects of the antidepressant he took. She also told the Southern Investigative Reporting Foundation that Acadia complained to the FDA about her presence on the panel.)
In an interview with the Southern Investigative Reporting Foundation, Witczak explained she voted against approval because “I didn’t think it was a reasonable risk for patients given Acadia’s [presentation of] data.” She said, “And when I asked their doctors basic questions about how the company planned on preventing off-label use, they were evasive.”
Witczak continued, “For every two people who had a 50 percent reduction of psychosis, a third person had a severe reaction.” She added, “I asked [the FDA’s deputy director of clinical science], Bob Temple, if the FDA considered this a robust trial — on any level — and he said no.”
Nuplazid’s performance is suspect in another, more recent study, undertaken as part of Acadia’s attempt to gain approval to treat Alzheimer’s disease psychosis. (Such approval would be a boon for the company as a treatment for Alzheimer’s disease psychosis would represent a much larger potential market than one for Parkinson’s disease.)
In a Lancet Neurology study published in February, Dr. Clive Ballard, a faculty member and dementia specialist at Great Britain’s University of Exeter Medical School, said over a six-week period Nuplazid demonstrated “efficacy in patients with Alzheimer’s disease psychosis.“ But he neglected to point out that nearly all substantive tests on antipsychotics last 12 weeks.
In a commentary on the Ballard-led study that was commissioned by Lancet Neurology and published alongside it, Dr. Lon Schneider, bluntly dismissed Nuplazid’s prospects for treating Alzheimer’s psychosis.
“The results of this trial cannot be considered to be positive or clinically meaningful,” Schneider wrote about the 2017 study conducted at 133 nursing homes in England.
The trial wasn’t long enough, argued Schneider, a professor at University of Southern California’s Keck School of Medicine. “If the primary outcome had been specified for 12 weeks, typical of previous trials with antipsychotics,” he said, “then [Nuplazid] would have been considered as not effective.” (Ballard did state on the front page of his study that at the 12-week mark there was little difference between the drug and placebo.)
Reached for comment, Schneider said, “I’ve seen or heard nothing since the article’s release that points to [my] view being problematic.”
Yet, there’s an odd feature to the study: According to the study’s chart tracking patient responses, at the six-week point the reported results from the placebo and Nuplazid deviate. But before and after the six-week mark, the results from Nuplazid and those of placebo essentially mimicked each other, suggesting that the drug had a minimal effect on most Alzheimer’s psychosis symptoms. No explanation for this hiccup is apparent other than it being so-called noise, an artifact, or an error introduced at some point in the testing process.
The study measured results using the neuropsychiatric inventory for nursing homes, or NPI-NH scale, assigning points based on how well Nuplazid addressed standard Alzheimer’s psychosis symptoms. So the lower the score, the more favorable the reaction. For instance, if a patient’s difficulty in sleeping increased (or was unchanged) after starting to take Nuplazid, this case was assigned one point. If the sleeping difficulties improved, the score was zero.
The Southern Investigative Reporting Foundation posed several questions to Acadia about the Lancet Neurology paper — in February. The evening before this article went to press, the company provided the following response: “While we consider the findings from the study Dr. Lon Schneider referenced in the Lancet Neurology to suggest potential efficacy and acceptable tolerability of [Nuplazid] for psychosis in Alzheimer’s disease, we are currently conducting a well-controlled, confirmatory Phase 3 study in patients with Dementia Related Psychosis.”
The upshot of the FDA panel’s approval of Nuplazid for Parkinson’s disease psychosis is that the drug is selling like hotcakes despite, as noted above, the unfavorable media scrutiny and the remarks from FDA Commissioner Gottlieb.
Bet on that changing, though.
Much of Acadia’s business model appears to have been built using as a template the methods of Avanir Pharmaceuticals, an Aliso Viejo, California-based, neurology-focused company with a pair of drugs currently on the market. (Avanir is owned by Japan’s Otsuka Pharmaceuticals.) Since April 2016 Acadia has hired 26 former Avanir staffers, with 22 of them serving as sales representatives: Ten of the 22 sell the drug primarily to nursing homes and other long-term care facilities.
If the name Avanir rings a bell, it may be because CNN’s October investigation found the company’s marketing strategy was medically and ethically dubious. The company’s drug, Nuedexta, treats a condition called pseudobulbar affect, a rare side effect of multiple sclerosis and Lou Gehrig’s disease resulting in sudden, uncontrollable bouts of laughter or crying.
Instead of peddling Nuedexta to the rare neurologist whose patient was experiencing pseudobulbar affect, Avanir’s sales staff found many physicians willing to prescribe it off-label to elderly people with dementia or Alzheimer’s disease. The investigation uncovered a close connection between the upward trajectory of Nuedexta’s prescription volume and Avanir’s payments to physicians for consulting and speaking fees.
Avanir’s off-label sales strategy initially increased the company’s revenue and propelled its stock price growth, from the drug’s November 2010 launch through the end of 2016. But adverse publicity after CNN’s October story weighed heavily on Nuedexta sales last year, with its $219.4 million total being about $55 million below management’s projections.
Dig into Avanir’s quarterly filings, however, and Nuedexta’s waning prospects appear in sharper relief. In the second quarter of 2017, sales of the drug totaled nearly $64.5 million. But in the first quarter of this year, its sales declined to $49.8 million.
A Centers for Medicare and Medicaid Services warning last month to insurers “about increases in [Nuedexta] utilization that may not be readily discerned or may relate to potential fraud” is sure to accelerate this downward arc.
Yet Otsuka management’s Nuedexta sales estimate for this year (made in February in the supplement to its annual financial filings) is more than $300 million, which would represent an increase of about 25 percent over 2017’s results.
Unlike Avanir, Acadia does not have a deep-pocketed parent to absorb the potentially steep costs should regulators and plaintiff’s lawyers begin to demand answers.
One area where Acadia has hewed closely to Avanir’s script can be found in the Centers for Medicare and Medicaid Services Open Payments data.
In a word, Acadia didn’t just open up its corporate wallet for doctors: It pointed a hose and sprayed cash at them.
Over the six months that Nuplazid was commercially available in 2016, Acadia spent $609,556 on consulting, speaking and travel and lodging payments to 1,578 doctors: Pomona, New York, psychiatrist Dr. Leslie Citrome’s $25,690 payout amounted to the largest sum, followed by the $19,142 paid to Dr. Khashayar Dashtipour, a Loma Linda, California-based neurologist.
But what a difference a year makes.
For 2017, Acadia paid more than $8.6 million to 7,051 physicians, with 62 doctors receiving more than $50,000 apiece, and 26 receiving at least $100,000 each.
The leading recipient of Acadia cash last year was Dr. Neal Hermanowicz, an Irvine, California-based movement disorders specialist who took in $180,123, a handsome improvement over 2016’s $10,421. The runner up was psychiatrist Dr. Jason Kellogg, of Santa Ana, California, who was paid $166,259. (In contrast, the $25,690 that Dr. Citrome received in 2016, which was the biggest payout for that year, would have ranked as only the 104th largest payment to doctors if it had been given out in 2017.)
Given the fact that Acadia hired a significant number of former Avanir sales staffers, a substantial number of doctors have ended up receiving consulting payments from both Avanir and Acadia in the same calendar year: A total of 31 did in 2017, as did 29 in 2016. Out of that group, a dozen doctors took in $5,000 apiece or more from the two companies in 2017. Just six did in 2016.
Acadia’s payments in 2017, according to the Centers for Medicare and Medicaid Services’ Open Payments database, were almost entirely for consulting, save $522,935 for food and beverage expenses. (Other payment categories the centers track include “honorariums,” such as fees for lecturing to other medical professionals, or “education,” when the company covers the expense of distributing a journal article or staging a presentation at a conference.) Despite Acadia’s discussions about supporting research on Nuplazid, the company’s appetite for external or independent research sharply declined last year. It spent just $197,587 on doctors’ research projects, in contrast with its $817,613 outlay in 2016. (Avanir went in the other direction, devoting $7.61 million to research last year and $4.36 million to payments to doctors.)
Since Acadia doesn’t release Nuplazid’s prescription count, Medicare Part D data is the only way to observe prescriber behavior. To that end, overlaying Medicare Part D prescription volume from 2016 (the latest period for which data is available) against the Centers for Medicare and Medicaid Services Open Payments data for 2016 and 2017 illuminates a few things.
There’s a good deal of overlap between those who received Acadia consulting fee payments in 2016 and 2017 and the individuals who prescribed Nuplazid with some frequency in 2016. For instance, in 2016, 14 of the 25 most frequent prescribers of Nuplazid to patients covered by Medicaid Part D received “consulting fees” in 2017 worth more than $1.21 million in total.
Almost 37 percent of Acadia’s $1.21 million in consulting fee payments, or $443,014, went to three neurologists who conducted Acadia-funded studies on Nuplazid and published journal articles about their findings: Dr. Neal Hermanowicz; Dr. Stuart Hal Isaacson of Boca Raton, Florida; and Dr. Rajesh Pahwa of Kansas City, Kansas.
Pittsburgh-based Dr. Susan Baser, a leading prescriber of Nuplazid to patients paying for it via Medicaid Part D, told the Southern Investigative Reporting Foundation, “It’s the only drug addressing [Parkinson’s disease psychosis] and we’ve had positive effects in some patients.” She added, “Personally I think it’s a good drug despite the noise about adverse events that’s out there.”
Baser, who did not receive any consulting fees from Acadia in 2016 and 2017, expressed surprise at the size of the payments that some of her peers received from the company. “I work 60 hours per week. I don’t know how they have the time. I’m just too busy for any of that.”
In addition, despite its skyrocketing sales, Nuplazid appears to have had some challenges in gaining traction among the neurologists and psychiatrists who treat Parkinson’s disease and other movement disorders. According to a review of data for all Nuplazid prescriptions paid for by Medicare Part D, 2,020 doctors or other medical personnel wrote at least one prescription for the drug in 2016. (The Centers for Medicare and Medicaid Services doesn’t list the names of individuals who write fewer than 11 prescriptions, due to patient-privacy concerns.) Only 170 doctors or other eligible prescribers wrote at least 11 prescriptions.
Of those 170 prescribers in 2016, 13 were either nurse practitioners or physician assistants whose payments from pharmaceuticals companies are not included in the Open Payments system. Among the remaining 157 individuals, 70 did not receive any money from Acadia in 2017. This suggests they may not have continued to write enough prescriptions for the drug in 2017 to draw attention from the company. (Some of the 157 individuals may have refused consulting fees or honorariums because of scheduling constraints. But current and former sales staffers for pharmaceutical companies told the Southern Investigative Reporting Foundation that these businesses aggressively try to maintain long-term connections with the most frequent prescribers.)
Acadia told the Southern Investigative Reporting Foundation that less than 5 percent of Nuplazid’s prescriptions come from its top 10 prescribers.
The money behind Nuplazid is only its second most compelling characteristic. The first is the sheer number of medical issues that appear to be linked with the drug’s use.
According to the FDA’s adverse events reporting system (FAERS), from January through the end of March, 162 patients have died while taking Nuplazid. The figure is 612 since the drug’s June 2016 debut through this March. Those fatalities, however, are just part of a larger picture that suggests longer-term challenges for Acadia: Since June 2016 nearly half of the 6,800 FAERS reports refer to topics like “hallucination” or “confusional state” or “drug ineffective.”
In response to questions on the FAERS data, Acadia investor relations representative Elena Ridloff responded via email: “Based on the totality of available information, ACADIA is confident in Nuplazid’s efficacy and safety profile which remains unchanged and — as the FDA itself has stated — is appropriately described.”
These adverse event reports aren’t considered as conclusive as an official autopsy, and the fact that a patient died while taking a certain drug doesn’t mean the medication caused it. Also, this completely voluntary reporting system allows for a wide array of filers. Family members, caregivers and trained medical professionals can make submissions. So the level of accuracy and detail can vary widely. Finally, many medical professionals have suggested that because this documentation is voluntary, many incidents involving drugs are not reported to FAERS.
An analysis of the longer-form FAERS case reports — obtained via Freedom of Information Act requests — illuminates Acadia’s success at getting prescribers to order Nuplazid for patients within long-term care facilities. The majority of the adverse events for these patients involved off-label use of the drug for various dementia-related psychoses, despite the explicit black-box warning.
A notable feature of many of the individual case reports that documented a death is the brevity of the patient’s experience with Nuplazid. Given the spotty information found in many reports, though, it’s difficult to arrive at precise numbers overall. But for those case reports citing a death that also provided a time frame for the patient’s treatment with Nuplazid, exposure to the drug had been less than 90 days on average.
For example, a 75-year-old man, identified only as Case ID: 12689689, began taking Nuplazid on Aug. 3 2016. By Aug. 26 he was dead. His cause of death was listed as “unknown,” but the case report said he had been diagnosed with Parkinson’s disease dementia.
(Nuplazid, like many similar drugs, has been observed to have a mild but discernible effect on the electrical cycle of the heart’s ventricles — in a process that cardiologists call repolarization and depolarization. Think of it as being like the movement of a swing: Depolarization is when the swing goes down; repolarization is when it heads up. The measurement of the length of the time between the two is called the QT interval, or “the space between the start of the Q wave and the end of the T wave,” according to the Mayo Clinic. If the QT interval is prolonged, the possibility of an arrhythmia sharply increases.)
Some other concerns about Nuplazid can be understood through the history of Case ID: 13253142. This 91-year-old man was (despite the black box warning) prescribed the drug to treat his Parkinson’s disease dementia and psychosis. He began taking Nuplazid in November 2016 but soon stopped for a five-month period after reports of sleep disruption and a loss of mental clarity; the report isn’t clear about whether the prescriber stopped the treatment because of this. In April 2017 the elderly patient resumed taking the drug again; soon afterward medical personnel reported that he began entering into catatonic states. After a series of health problems, including rapid weight loss and the inability to swallow, he died in May 2017. (The attending physician and the patient’s son blamed factors other than Nuplazid for the man’s death, such as the poor quality of care in his assisted living facility.)
To gain a sense of how Nuplazid’s number of adverse event reports compares with other Parkinson’s disease-focused drugs, the Southern Investigative Reporting Foundation used the FAERS database to create two charts. If Nuplazid’s death rate was parallel to other Parkinson’s drugs, the explanation for it would be unlikely to be drug-related; alternately, if those taking Nuplazid died more frequently than the comparison group, re-visiting the drug’s safety profile would be logical.
The first compares the number of serious incidents and deaths reported for people taking Nuplazid with the tally of serious incidents and deaths for individuals taking nine other Parkinson’s disease medications; the time frame considered was from June 2016 through the end of this past March. The nine other medications have longer track records for the treatment of Parkinson’s disease.
Nuplazid Compared With Its Peers
Reports uploaded to the FAERS database that indicate a patient died while taking Nuplazid sharply outnumbered the reported deaths of those on the nine other drugs: A total of 610 individuals died while taking Nuplazid but just 87 died while taking any of the nine other medications. Nuplazid-tied deaths represented more than 38 percent of the total number of serious incidents; but for those taking any of the other nine medications, death amounted to less than 5 percent all serious incidents.
These results cannot be interpreted as definitive: Patients taking Nuplazid are usually quite frail since they have had Parkinson’s disease for several years and might be weaker on average than the people on the nine other drugs. Additionally, newer drugs tend to draw more FAERS submissions than more established ones.
But these results certainly show Nuplazid has a radically different safety profile than other Parkinson’s disease treatments.
A second chart explores whether Nuplazid’s seemingly high level of adverse event reports is similar to reactions to another central nervous system-targeted drug, Namzaric, which was approved in 2014 for treating Alzheimer’s dementia.
A few variables are skewed in Namzaric’s favor. There is a high probability that the Alzheimer’s dementia patients who take Namzaric are frailer than the people being given Nuplazid. Also, Namzaric’s parent company, Allergan, has spent more than four years and tens of millions of dollars on advertising online and on television to raise the drug’s profile.
It stands to reason that a new, high-visibility drug like Namzaric would, if warranted, receive a great deal of adverse event submissions.
As the chart below shows though, it hasn’t: The number of reports of fatalities and adverse events associated with Nuplazid is much greater than that for Namzaric.
Nuplazid vs. Namzaric
Calculating the number of deaths as a percentage of the number of adverse events associated with the rate for Namzaric is tricky because few people who took either drug did so for the same amount of time.
Fortunately medical statisticians can rely on a measurement tool called “patient years.” It is an average of how many patients have taken a specific drug over the course of a given year. For example, assume a certain drug costs each patient $10,000 a year to take and that the medication had $100,000,000 in sales. Using the patient years calculation, researchers could say that roughly 10,000 patients took the drug for one year.
For this chart each drug’s annual sales figure was divided by its retail price at the end of 2016 and 2017: Namzaric cost $4,249 at the end of 2016 — and $5,069 in 2017. For Nuplazid, it was $25,000 and $33,336, respectively. Namzaric’s patient years figures in 2016 and 2017 were 13,536 and 25,805; Nuplazid’s were 692 and 3,747.
“Deaths per patient year” is a rough statistical way of measuring patient deaths while assuming the typical patient used the drug for a full year. Epidemiologists call this “the excess death rate,” or the number of deaths above what is reasonably anticipated in a population group.
The number of patient deaths for Namzaric was a scant .0001; Nuplazid’s tally, however, was .0881 in 2016 and .1033 in 2017.
So in 2016, if 1,000 patients took Nuplazid for one year, about 88, or 8.8 percent, could be expected to die over and above the already steep mortality rate of approximately 25 percent; in 2017 the figure would rise to 103. But it would take 10,000 patients on a Namzaric protocol for a full year for a single death to result.
This is the full text of Acadia’s response to the Southern Investigative Reporting Foundation’s questions.
Editor’s note: To obtain the fairest profile of the drug histories, the Southern Investigative reporting Foundation used adverse event reports of “serious cases,” or incidents that required medical attention, and then deaths were subtracted from this total. For the death figures, only deaths reported as a prospective reaction to a drug were counted, as opposed to the higher “death cases” figure that the FDA records.
Correction: An earlier version of this story inaccurately described Nuedexta’s safety profile. It has never carried a black box warning. Also Avanir Pharmaceuticals has two drugs that are commercially available.