Leuchter wondered what was up: Depressed patients didn't usually seek out drugs used to quell psychiatry's most disturbing symptoms.
This week, a Food and Drug Administration advisory panel recommended that the agency should grant the makers of a second atypical antipsychotic drug -- Seroquel XR -- similar latitude. The drug giant AstraZeneca wants permission to market the drug as a treatment for depression or anxiety that has not yielded to antidepressants alone.
But this time, it wasn't quite so easy a sell. The panel did say the drug was safe and effective for such purposes when used with other drugs, recommending approval for its use as an "add-on" treatment. But the panel recommended against the drug as a stand-alone treatment. And this time, the panel -- echoing an issue expressed by the FDA in convening the meeting -- cited safety concerns about the drugs' use in a greatly expanded population of patients.
Mounting research has made clear that the atypical antipsychotics are not only less safe than originally thought; they are not, on balance, any safer or more effective than older drugs for schizophrenia. And for the population of depressed or anxious patients that some are now proposed to treat, studies suggest the benefits are extremely modest.
The accumulated findings on the larger group of drugs had prompted the FDA to ask its advisory panel whether expanding the population of patients taking Seroquel XR would be wise. Like other members of this class of drugs, Seroquel has been linked to weight gain extreme enough to cause diabetes and to an often irreversible disorder characterized by involuntary tics and jerking movements.
As for Abilify, Sonia Choi, a Bristol-Myers Squibb spokeswoman, said the company "is continually monitoring the safety of Abilify, including the metabolic data, as part of our regular practice and is committed to disclosing clinical trials results" on the medication as they become available.
The concerns expressed by the FDA and its advisory panel, many public health experts say, come too late. In less than a decade, physicians have embraced the broad use of the atypical antipsychotics to treat mental disorders far less severe than schizophrenia and bipolar disorder -- afflictions such as anxiety, sleep difficulties, depression, attention deficit disorder and autism. First prescribed almost exclusively to adults, the drugs are now often used in the treatment of adolescents and kids as young as 2.
The sales of atypical antipsychotics have skyrocketed in recent years, propelling overall sales of antipsychotic drugs past all other classes, to $14.6 billion in 2008, according to IMS Health, a private firm that tracks drug trends. In 2008, 50 million prescriptions for antipsychotics, mostly the new ones, were filled in the U.S. -- a 5% hike in one year alone.
In the process, the spreading use of these costly drugs is raising -- for the nation as well as individual patients -- the rates and the risks of weight gain, diabetes, strokes, fatal heart attacks, an array of movement disorders and potentially, suicide, according to a wide range of critics.
"This is very worrisome; frankly I have serious concerns about these drugs," says Dr. Steven Nissen, who is chairman of the Cleveland Clinic's cardiovascular medicine department and serves as an ad hoc advisor for FDA panels. Studies point to a "very questionable balance between efficacy and safety" for the class, he said. But that message, he said, has been lost in an apparent "marketing bonanza" for the companies that make the medications. A recent report by the consulting firm Decision Resources found the makers of the atypicals spent $993 million in 2006 to promote the drugs to doctors and patients.
That's not to say the drugs haven't helped people.
Leuchter, who has prescribed Abilify for some with treatment-resistant depression, says that for certain patients and in certain circumstances, it works. "These are very effective medications, and like all medications, they have side effects," he says. But he adds: "I wouldn't want people to think this is the first thing they should reach for when a patient doesn't respond well to first-line antidepressants."
Newer drugs 'safer'
Introduced through the 1990s and early 2000s, the atypical antipsychotics -- drugs marketed as Abilify, Seroquel, Zyprexa, Geodon, Clozaril and Risperdal -- were widely hailed as superior to older schizophrenia drugs such as Thorazine and Haldol, which began to be used in the 1950s and 1960s, respectively. The first-generation antipsychotics could be highly effective at taming hallucinations and delusions. But some studies indicated that as many as 1 in 5 who took them developed involuntary tics and muscle movements called tardive dyskinesia, a condition that frequently cannot be reversed.
The newer drugs were supposed to be safer and more effective. That claim has now been roundly challenged.
A landmark 2005 study concluded that the drugs have brought marginal improvements at much greater expense than traditional antipsychotics in their primary use of treating schizophrenia. The CATIE study (for Clinical Antipsychotic Trials of Intervention Effectiveness) compared four of the atypicals -- Zyprexa, Geodon, Seroquel and Risperdal -- with the first-generation antipsychotic perphenazine (Trilafon), a drug costing on average a tenth the price of the newer drugs. It found the risk of tremors and tardive dyskinesia to be the same for all. And while all the antipsychotics are associated with weight gain, it was more frequent and more likely to be extreme among patients taking atypicals -- leading many to develop diabetes.
Last December, the British journal Lancet published a comprehensive analysis that further punctured the new drugs' claims to superiority. A separate study found Seroquel by many measures to be no more effective in treatment of schizophrenia symptoms than Haldol. And a 2008 study on Abilify found it was little better at banishing depressive symptoms than a placebo.