irrational exuberance…

Posted on Wednesday 17 April 2013

"The new framework will not replace the DSM, which is too important to discard…"

Only Rip Van Winkle would not to know that academic psychiatry, the American Psychiatric Association [APA], and the National Institute of Mental Health [NIMH] have been united in their assumption that mental illness is a manifestation of brain disease since the introduction of the DSM-III diagnostic paradigm in 1980. They were joined along that journey by the pharmaceutical industry, and have adapted the medical specialty of psychiatry to a practice based on that assumption – with help from another industry, the third party carriers. The inconvenient truth that evidence for this position was lacking weighed heavily on them, so in the early days of the new millennium, the APA took the occasion to use the coming revision of the Diagnostic and Statistical Manual [DSM] to settle the issue – a plan introduced in a book by the future chairs of that revision process in 2002 to solidify that position as part of their DSM revision:
A Research Agenda for DSM-V
edited by David J. Kupfer, Michael B. First, and Darrel A. Regier
Copyright 2002 American Psychiatric Association
[full text online]

In the more than 30 years since the introduction of the Feighner criteria by Robins and Guze, which eventually led to DSM-III, the goal of validating these syndromes and discovering common etiologies has remained elusive. Despite many proposed candidates, not one laboratory marker has been found to be specific in identifying any of the DSM-defined syn- dromes. Epidemiologic and clinical studies have shown extremely high rates of comorbidities among the disorders, undermining the hypothesis that the syndromes represent distinct etiologies. Furthermore, epidemiologic studies have shown a high degree of short-term diagnostic instability for many disorders. With regard to treatment, lack of treatment specificity is the rule rather than the exception.

The efficacy of many psychotropic medications cuts across the DSM-defined categories. For example, the selective serotonin reuptake inhibitors have been demonstrated to be efficacious in a wide variety of disorders, described in many different sections of DSM, including major depressive disorder, panic disorder, obsessive-compulsive disorder, dysthymic disorder, bulimia nervosa, social anxiety disorder, posttraumatic stress disorder, generalized anxiety disorder, hypochondriasis, body dysmorphic disorder, and borderline personality disorder. Results of twin studies have also contradicted the DSM assumption that separate syndromes have a different underlying genetic basis. For example, twin studies have shown that generalized anxiety disorder and major depressive disorder may share genetic risk factors

Concerns have also been raised that researchers’ slavish adoption of DSM-IV definitions may have hindered research in the etiology of mental disorders. Few question the value of having a well-described, well-operationalized, and universally accepted diagnostic system to facilitate diagnostic comparisons across studies and to improve diagnostic reliability. However, reification of DSM-IV entities, to the point that they are consid- ered to be equivalent to diseases, is more likely to obscure than to elucidate research findings.

All these limitations in the current diagnostic paradigm suggest that research exclusively focused on refining the DSM-defined syndromes may never be successful in uncovering their underlying etiologies. For that to happen, an as yet unknown paradigm shift may need to occur. Therefore, another important goal of this volume is to transcend the limitations of the current DSM paradigm and to encourage a research agenda that goes be- yond our current ways of thinking to attempt to integrate information from a wide variety of sources and technologies.

In that same year, Dr. Tom Insel became the Director of the NIMH, and soon openly joined the quest with his own addition, the specialty called formerly known as psychiatry was, indeed, actually clinical neuroscience, and he laid out a timetable for its unfolding based on an array of new technologies:
Psychiatry as a Clinical Neuroscience Discipline
by Thomas R. Insel and Remi Quirion
JAMA. 2005 294[17]: 2221–2224.
[full text online]

One of the fundamental insights emerging from contemporary neuroscience is that mental illnesses are brain disorders. In contrast to classic neurological illnesses that involve discrete brain lesions, mental disorders need to be addressed as disorders of distributed brain systems with symptoms forged by developmental and social experiences. While genomics will be important for revealing risk, and cellular neuroscience should provide targets for novel treatments for these disorders, it is most likely that the tools of systems neuroscience will yield the biomarkers needed to revolutionize psychiatric diagnosis and treatment. This essay considers the discoveries that will be necessary over the next two decades to translate the promise of modern neuroscience into strategies for prevention and cures of mental disorders. To deliver on this spectacular new potential, clinical neuroscience must be integrated into the discipline of psychiatry, thereby transforming current psychiatric training, tools, and practices.
As time passed and the DSM-5 Task Force had its series of research symposiums, both the DSM-5 Task Force and the NIMH timelines looked increasingly less likely. Meanwhile, the NIMH came up with an alternative scheme based on the notion that the problem wasn’t with their hypothesis, it was that the presupposed biology didn’t map onto our clinical syndromes. So they set off on a different tack, mapping the patients onto the biology. It was called the RDoC:
Research Domain Criteria (RDoC): Toward a New Classification Framework for Research on Mental Disorders
by Thomas Insel, Bruce Cuthbert, Marjorie Garvey, Robert Heinssen, Daniel S. Pine, Kevin Quinn, Charles Sanislow, and Philip Wang.
American Journal of Psychiatry. 2010 167:748-751.
[full text online]

… Four decades ago, Robins and Guze suggested five criteria for validating diagnosis [clinical description, laboratory tests, delimitation, follow-up studies, and family data], where the goal was specifying prognosis. Reminiscent of the rationale for developing the Research Diagnostic Criteria in the 1970s that led to the innovative DSM-III for clinical use, the question now becomes one of when and how to build a long-term framework for research that can yield classification based on discoveries in genomics and neuroscience as well as clinical observation, with a goal of improving treatment outcomes. As the major federal research agency funding mental health research in the United States, the National Institute of Mental Health believes the time has arrived to begin moving in such a new direction.

The NIMH is launching the Research Domain Criteria [RDoC] project to create a framework for research on pathophysiology, especially for genomics and neuroscience, which ultimately will inform future classification schemes. The RDoC project is intended to be the next step in a long journey, one that continues the process begun in the 1970s of ensuring diagnosis that has both reliability and validity. While the focus of this journey over the past 30 years has been on refinements in clinically based classification, the time has come to lay the groundwork for the next step in this process: incorporating data on pathophysiology in ways that eventually will help identify new targets for treatment development, detect subgroups for treatment selection, and provide a better match between research findings and clinical decision making.
The DSM-5 Task Force later said that they had realized along the way that their goal of a DSM based on a solid biological footing wasn’t going to happen, but they took their time telling us. Here’s their first public statement that their goal was not going to be reached:
Neuroscience, Clinical Evidence, and the Future of Psychiatric Classification in DSM-5
by David J. Kupfer, M.D. and Darrel A. Regier, M.D., M.P.H.
American Journal of Psychiatry 168:672-674, 2011.
[full text online]

In the initial stages of development of the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders,we expected that some of the limitations of the current psychiatric diagnostic criteria and taxonomy would be mitigated by the integration of validators derived from scientific advances in the last few decades. Throughout the last 25 years of psychiatric research, findings from genetics, neuroimaging, cognitive science, and pathophysiology have yielded important insights into diagnosis and treatment approaches for some debilitating mental disorders, including depression, schizophrenia, and bipolar disorder. In A Research Agenda for DSM-V, we anticipated that these emerging diagnostic and treatment advances would impact the diagnosis and classification of mental disorders faster than what has actually occurred…

And we began to hear more explicitly about the NIMH RDoC initiative and its basic assumptions, even from the DSM-5 Task Force itself. They passed the baton:
We realized from our Research Agenda conference series that we would not be able to accomplish by DSM-5’s deadline all of the things we set out to and, in fact, that portions of that agenda related to advances in neuroscience were already being addressed in other arenas. A logical extension of those discussions, as detailed in our Research Agenda  articles, is the Research Domain Criteria [RDoC] initiative recently launched by the National Institute of Mental Health [NIMH]. A commentary by Insel and colleagues  introduced readers to the working principles behind the RDoC, whose proposed reclassification of mental disorders for research purposes is predicated on a neuroscience-based framework that can contribute to a nosology in which disorders are grouped by underlying pathophysiological similarities rather than phenomenological observations…
The RDoC assuptions were a bolder statement of the biological hegemony than any previous version:
Research Domain Criteria: cognitive systems, neural circuits, and dimensions of behavior
by Sarah E. Morris and Bruce N. Cuthbert
Dialogues in Clinical Neuroscience. 2012 14[1]: 29–37.
[full text online]

The RDoC framework has its foundation in three postulates.

  • First, mental illnesses are presumed to be disorders of brain circuits.
  • Secondly, it is assumed that the tools of clinical neuroscience, Including functional neuroimaging, electrophysiology, and new methods for measuring neural connections can be used to identify dysfunction in neural circuits.
  • Third, the RDoC approach presumes that data from genetics research and clinical neuroscience will yield biosignatures that will augment clinical signs and symptoms for the purposes of clinical intervention and management…
Now that the DSM-5 is about to be released, we hear from the RDoC’s Bruce Cuthbert that the DSM-5 is flawed because it left out the "biological underpinnings of mental disorders" and that "a classification system based on recent research [RDoC] is revealing how the structure and activity of a mentally ill brain differs from that of a healthy one." I guess he missed the history along the way:
New DSM-5 Ignores Biology of Mental Illness
Scientific American
By Ferris Jabr
April 17, 2013
[full text online]

This month the American Psychiatric Association [APA] will publish the fifth edition of its guidebook for clinicians, the Diagnostic and Statistical Manual of Mental Disorders, or DSM-5. Researchers around the world have eagerly anticipated the new manual, which, in typical fashion, took around 14 years to revise. The DSM describes the symptoms of more than 300 officially recognized mental illnesses — depression, bipolar disorder, schizophrenia and others — helping counselors, psychiatrists and general care practitioners diagnose their patients. Yet it has a fundamental flaw: it says nothing about the biological underpinnings of mental disorders. In the past, that shortcoming reflected the science. For most of the DSM‘s history, investigators have not had a detailed understanding of what causes mental illness.

That excuse is no longer valid. Neuroscientists now understand some of the ways that brain circuits for memory, emotion and attention malfunction in various mental disorders. Since 2009 clinical psychologist Bruce Cuthbert and his team at the National Institute of Mental Health have been constructing a classification system based on recent research, which is revealing how the structure and activity of a mentally ill brain differs from that of a healthy one. The new framework will not replace the DSM, which is too important to discard, Cuthbert says. Rather he and his colleagues hope that future versions of the guide will incorporate information about the biology of mental illness to better distinguish one disorder from another.

Cuthbert, whose project may receive additional funding from the Obama administration’s planned Brain Activity Map initiative, is encouraging researchers to study basic cognitive and biological processes implicated in many types of mental illness. Some scientists might explore how and why the neural circuits that detect threats and store fearful memories sometimes behave in unusual ways after traumatic events — the kinds of changes that are partially responsible for post-traumatic stress disorder. Others may investigate the neurobiology of hallucinations, disruptions in circadian rhythms, or precisely how drug addiction rewires the brain. The ultimate goal is to provide new biological targets for medication. “We understand so much more about the brain than we used to,” Cuthbert says. “We are really in the middle of a big shift.”

[My apologies for so many retread references, but they all seemed pertinent]
  • Circularity: There’s a remarkable circularity in this series. It starts in 2002 with a move to finally put the long awaited biological understructure of mental disorders in place. It ends in 2013 with a move to finally put the long awaited biological understructure of mental disorders in place [the continents move faster that the "big shift" we’re in the "middle" of in psychiatry]. The APA spent $25 M on their "big shift" [that didn’t shift]. Now the NIMH and Cuthbert are after a piece of the $100 M Federal BRAIN Initiative for their go at making the "big shift."
  • Coordination: The second point is that there is an equally remarkable coordination between the efforts of the various groups involved in this story – the APA, the DSM-5 Task Force, the NIMH, Cuthbert’s RDoC, with academia and PHARMA rolling around in the spaces. One has the feeling one is dealing with a Cartel or a Central Planning Committee rather than autonomous entities. These supposedly separate groups are like the Aspens in the Rockies – all connected through their root systems.
  • Control: Besides operating in unison, there is a surprising level of control in these groups. Almost all the responses come from the top or through some kind of official channels. This was part of Dr. Spitzer’s original complaint with the DSM-5 Task Force – nondisclosure agreements that came close to loyalty oaths. There are only dissenters and non-dissenters, rather than a wide variety of opinions being bandied about and debated.
So do I think it’s a conspiracy? I do sort of think that, but that’s neither here nor there. What I really think is that all these people are so focused on their institutions that they’ve forgotten the reason those institutions exist; that they’re so busy trying to find a future science that they can’t effectively work with the science they have; that they’re so hungry to be just like other medical physicians that they forget there is a reason they’re not [and if they succeed, they’re going to become extinct]; and that they’re being so controlling right now that they’re probably stifling any creativity they might have – running in circles, chasing fads [and funds]. Dr. Robert Shiller, a Yale Economist, is an expert on financial bubbles [falsely inflated markets]. He wrote a book, Irrational Exuberance, describing the behavior that precedes the bursting of a financial bubble. It’s an apt term for the tone and tenor of much that we hear from Academic Psychiatry, the American Psychiatric Association, the DSM-5 Task Force, and Dr. Tom Insel’s NIMH these days [the above]. We used to hear it from the pharmaceutical industry too, but they already heard the bubble burst, and are moving on to other markets…
  1.  
    April 17, 2013 | 11:22 PM
     

    From a half-finished blog post of mine:

    I did part of my training at an institution that prided itself on being firmly rooted in “biological psychiatry,” where even medical students were taught Robins & Guze and the Feighner criteria. Not coincidentally, it was also one of the few places I’ve been in which the psychiatrists all wore their white coats. Looking back, I am not surprised that doctors in other specialities there did not seem to have a ton of respect for their colleagues in psychiatry, maybe because they could see the fallacies of biological psychiatry more clearly than the psychiatrists themselves. Interestingly, this seemed to cause the psychiatrists to become even more defensive of the biological basis of psychiatry and to work ever harder to equate psychiatry with all the other branches of medicine.

  2.  
    wiley
    April 18, 2013 | 4:00 AM
     

    Well. This is the same field that named a “disorder” that individuals were expected to accept, be treated for, and identify with, “Attention Deficit Hyperactive Disorder.” A-D-H-D doesn’t exactly roll off the tongue either.

    Who were they not thinking of?

    “Longitudinally Extensive Transverse Myelitis”—- now there’s a scientific name.

    just kidding with the last part

  3.  
    Annonymous
    April 18, 2013 | 8:23 AM
     

    On the completely different topic of transparency in the political arena, and what Paul Thacker is up to these days:

    http://www.slate.com/articles/news_and_politics/politics/2013/03/barack_obama_promised_transparency_the_white_house_is_as_opaque_secretive.html

    There are days I wish that Paul Thacker’s name was more widely associated with the Senate’s investigation of clinical research conflict of interests, rather than Senator Grassley’s.

  4.  
    jamzo
    April 18, 2013 | 10:33 AM
     

    so nimh is hoping for additional monies for RDOC from the Brain Activity Map initiative

    “Cuthbert, whose project may receive additional funding from the Obama administration’s planned Brain Activity Map initiative”

    NIMH policy remains the same

    “The ultimate goal is to provide new biological targets for medication. “We understand so much more about the brain than we used to,” Cuthbert says. “We are really in the middle of a big shift.”

    and cuthbert would seem to have been recruited to head the RDoC project

    http://www.nimh.nih.gov/about/updates/2010/bruce-cuthbert-named-head-of-nimhs-division-of-adult-translational-research-and-treatment-development.shtml

    Bruce Cuthbert Named Head of NIMH’s Division of Adult Translational Research and Treatment Development

    March 05, 2010

    Dr. Bruce Cuthbert has been named Director of NIMH’s Division of Adult Translational Research and Treatment Development (DATR). A former member of NIMH’s extramural program staff, Dr. Cuthbert returns to NIMH following four years as a professor of clinical psychology at the University of Minnesota. He first came to NIMH in 1998, and was from 1999 to 2005 chief of the Adult Psychopathology and Prevention Research Branch. More recently, he had been assisting the institute since August, coordinating a project to develop neuroscience-based criteria for studying mental disorders.

    Dr. Cuthbert’s research is aimed at providing an understanding of how emotions, and disorders of emotional processing, originate in the interplay between the brain’s most basic motivational drives. Measured differences in how individuals react to neutral and emotionally-charged images—in terms of, for example, startle reflexes, heart rate, brain activity, and verbal descriptions of emotional state—reveal how complex emotional responses are ultimately based in the brain wiring that implements fundamental survival-oriented drives. A model of how motivational processes relate to emotion provides a way to understand comorbidity among anxiety, mood, and personality disorders, and to identify risk for these disorders. Another goal is to develop diagnostic approaches that focus on symptoms that may be common to different conditions.

    Dr. Cuthbert earned a Ph.D. in clinical psychology and psychophysiology from the University of Wisconsin at Madison. He served in the U.S. Army Medical Service Corps and was on the faculty for seventeen years at the University of Florida. He has also held guest professorships at the University of Giessen and the University of Tübingen in Germany. He was elected president of the Society for Psychophysiological Research in 2004 and is a fellow of the Association for Psychological Science.

    The Division of Adult Translational Research and Treatment Development (DATR) administers research programs aimed at understanding the pathophysiology of mental illness and hastening the translation of behavioral science and neuroscience advances into innovations in clinical care. The focus of DATR is to support research on the etiology and pathophysiology of mental illness in order to define predictors and understand the mechanism of treatment response; create and refine biomarkers, behavioral assessments, and phenotypic characterizations of disease; evaluate existing therapeutics for new indications; and hasten the development of more effective new treatments for mental illness.

  5.  
    Nick Stuart
    April 18, 2013 | 12:00 PM
     

    https://www.youtube.com/watch?v=PeZ-U0pj9LI

    Thomas Insel: Toward a new understanding of mental illness Tedtalk. Yawn.

  6.  
    Peggi
    April 18, 2013 | 3:36 PM
     

    “What I really think is that all these people are so focused on their institutions that they’ve forgotten the reason those institutions exist.” Sort of reminds me of the Catholic Church, Penn State and the Boy Scouts.

  7.  
    April 18, 2013 | 3:40 PM
     

    Nick,
    I saw that Ted Talk too. Yawn² is right!

    Peggi,
    Absolutely. There’s a lot of that going around…

  8.  
    April 18, 2013 | 7:11 PM
     

    Gird yourself. The fad for hunting the brain disease behind psychiatric conditions has only just begun.

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