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The Netherlands should be ‘at forefront’ of psychedelic research, says Dutch government

‘The Netherlands can play a pioneering role in developing the right frameworks, limiting potential risks, and designing training programs,’ the Dutch health minister said.

Ernst Kuipers, the new Dutch Minister of Health, Welfare, and Sports, has given his green light to more research in psychedelic therapy, citing “promising results” for typically difficult-to-treat mental illnesses through psychedelics-assisted therapy. His endorsement came in response to questions from three members of parliament from the Dutch political party D66. Kuipers summed up his stance on psychedelic research in a letter directed to the Speaker of the Dutch House of Representatives, and its content is factual and amenable to recent scientific results.

This is a departure for the Dutch government, which in recent years produced more prohibition-focused or avoidant language when it came to issues surrounding psychedelics. The new government has also announced that a state committee will look into the medical use of MDMA – a political compromise arising from the ongoing discussion in the Netherlands about the possible legalisation of MDMA for recreational use.

The new government’s health minister demonstrated conviction about the prominence psychedelic therapy will gain in global healthcare in the coming years, and envisions how the Netherlands could become a leader at the forefront of psychedelic research: “It is paramount that these and other potentially innovative treatments are safely accessible to the target population,” the minister writes. “The Netherlands is one of the leading countries in research into psychedelics in mental health care. In addition, the Netherlands can play a pioneering role in developing the right frameworks, limiting potential risks, and designing training programs for therapists. I am in favour of sharing earned knowledge with parties in the field across different countries.”

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The Netherlands at the forefront of psychedelic research

Apart from MDMA, other psychedelic substances – such as psilocybin1 and ketamine2 – have also demonstrated promise. Kuipers strikes a more cautious tone when speaking about these compounds, affirming the need for more research due to the preliminary nature of current results: “Most of these substances are still in the investigative phase of research. […] It is up to the relevant field parties to follow up on these results. This concerns conducting the necessary research, completing the step-by-step registration process for approval of the substance, and the development of guidelines and protocols necessary for treatment.”

Kuipers further stresses the need for extensive education, the training of psychedelic therapists, and the need to better understand individuals engaged in self-experimentation. He adds that he is “willing to play a facilitating and advising role” in implementing psychedelic research and that his ministry has recently conducted exploratory meetings with researchers and mental healthcare institutions.

He envisions the Netherlands as playing a major role internationally in the coordination and promulgation of psychedelic research, writing that “[t]he Netherlands can stimulate cooperation in a European and international context. In addition, the Netherlands can draw attention to removing barriers in conducting research. In the framework of the United Nations Commission on Narcotic Drugs, I continue to advocate for the removal of barriers to therapeutic use and research into substances on United Nations drug convention lists.

New Research

According to Kuipers, an estimated 1.2 million Dutch citizens currently seek curative mental healthcare each year. Another 215,000 citizens suffer from severe psychiatric illness, a segment of the patient population that is very difficult to treat with current therapies. Kuipers has announced he will allocate 35 million euros to mental healthcare research over the next four years, made available through the Dutch grant organisation ZonMw. Grants will support multidisciplinary studies focused primarily on clinical applied research.

The availability of these funds presents psychedelic researchers with a rare opportunity. Results from these new studies could further elucidate the therapeutic mechanisms by which psychedelics function, thereby putting their clinical application on firmer scientific footing.  Ultimately, Kuiper’s initiative offers the promise of advancing the field beyond its “investigative phase” and imagines a not-too-distant future in which psychedelics are used as legitimate therapeutic agents in clinical contexts, offering hope to the millions who suffer from severe psychiatric illness around the globe.

Barriers to breakthrough therapy status

The three representatives of D66 asked further questions surrounding the current “breakthrough therapy status” of certain psychedelics in the United States. A breakthrough therapy designation is granted to a drug that treats a serious or life-threatening condition, where preliminary clinical evidence indicates that the drug might demonstrate substantial improvement on clinically significant endpoints over available therapies.

Recently, the American Food and Drug Administration (FDA) granted ‘breakthrough therapy status’ to psilocybin for treatment-resistant depression and to MDMA for PTSD. Kuipers explains that a similar status within the Netherlands and other countries in Europe can be attained through organisations such as the European Medicines Agency (EMA).

The minister acknowledges the barriers that still exist for psychedelic research, like “a lack of financial resources for doing the necessary clinical research and developing an approved product for the patient. In addition, psychedelics are substances that are generally non patentable and thus do not fit the ordinary development and revenue model. The potential high costs for the therapeutic treatment with these substances (due to the large amount of hours therapists dedicate to patients during treatment) might also impede incorporating psychedelics as a standard treatment.” 

The issue of the relative expense of psychedelic therapy bears further scrutiny. How, for instance, would the cost of psychedelic therapy compare to that of treatment as usual (TUA) if we take into account factors such as the economic burden of different psychiatric illnesses and/or disability-adjusted life years (i.e,. the number of years lost due to an illness)? To resolve the issue of financial expenditure, cost-effectiveness analyses of psychedelic therapy should be conducted, such as that performed in 20203. This study found that MDMA-assisted psychotherapy versus TUA per 1,000 patients produced savings of up to $103.2 million over 30 years including costs, and surmised that “third-party payers are likely to save money within three years by covering this form of therapy [MDMA].” This, however, is just the conclusion of one study, and the issue of financing deserves further investigation.

Central management and the Netherlands

Kuipers acknowledges the risks involved in the lack of central management of psychedelics. Possible risks include personal experimental use of psychedelics and the development of  commercially exploitative practices that fail to the interests of patients first. Kuipers emphasises the urgency with which these questions need to be answered, and references the Dutch researchers and clinicians who authored Therapeutic use of psychedelics4: “[…] they can develop a framework for this new form of treatment by means of high quality guidelines, standards, and protocols.”

Finally, the new government of the Netherlands has called for more research into MDMA and the possible legalisation of it in the near future. Kuipers mentions that there will be a state committee specifically for MDMA. The state committee will “investigate the status of MDMA in the context of public health and provide advice surrounding the pros and cons of medicinal use by adhering to a multidisciplinary analysis, which takes into account potential risks for health, prevention, and the European context and its relevant treaties.” Kuipers expects to inform the House of Representatives of the committee’s findings in the second quarter of this year.

References:

1. Davis, A. K., Barrett, F. S., May, D. G., Cosimano, M. P., Sepeda, N. D., Johnson, M. W., … & Griffiths, R. R. (2021). Effects of psilocybin-assisted therapy on major depressive disorder: a randomized clinical trial. JAMA psychiatry, 78(5), 481-489.

2. Nieuwsuur (2022). Keta kan ‘revolutionair’ middel zijn tegen depressie, maar er zijn ook zorgen.  Consulted on 27 March 2022.

3. Marseille, E., Kahn, J. G., Yazar-Klosinski, B., & Doblin, R. (2020). The cost-effectiveness of MDMA-assisted psychotherapy for the treatment of chronic, treatment-resistant PTSD. PloS one, 15(10), e0239997.

4. Universitair Medisch Centrum Groningen. Manifest therapeutische gebruik van psychedelica. Retreived March 20, 2022.

How to Change Your Mind: The New Science of Psychedelics

How to Change Your Mind: The New Science of Psychedelics. Michael Pollan. The Penguin Press. ISBN: 9781594204227

A highly accessible and enjoyable read through the history of psychedelic research and use starting in the 1960s up to the present day. Pollan applies his quintessential experiential journalism approach to various psychedelic substances – starting off hesitantly, as he weaves through the research and has several personal experiences, Pollan becomes a measured advocate for the power psychedelics have to change our minds and more.

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Posttraumatic Stress Disorder After a Psychedelic Experience, a Case Report

Abstract

In the last 2 decades, there is a renaissance in the scientific investigation of the therapeutic potential of psychedelic compounds. It is studied for the treatment of many psychiatric disorders, including posttraumatic stress disorder. The treatment is always done in the setting of psychedelic-assisted psychotherapy. A little is known about the potential effects, outside of the setting of psychedelic-assisted psychotherapy, on people diagnosed with a mental disorder or have a significant trauma history. In this case report, we present a young man who developed posttraumatic stress disorder after a psychedelic experience, induced by both Lysergic Acid Diethylamide (LSD) and N, N Dimethyltryptamine (DMT). In the psychedelic experience, a repressed memory of childhood sexual abuse was recovered. To our knowledge, this is the first report on posttraumatic stress disorder onset after a psychedelic experience. We believe that this case report is important since the history of trauma is prevalent among individuals with substance use disorder. Medical staff that treat people with either substance use disorder or trauma should be familiar with irregular presentations, such as the one described in this case.

Rubin-Kahana, D. S., Hassan, A. N., & Le Foll, B. (2021). Posttraumatic Stress Disorder After a Psychedelic Experience, a Case Report. Journal of addiction medicine, 15(3), 248–251. https://doi.org/10.1097/ADM.0000000000000734

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Naturalistic Use of Mescaline Is Associated with Self-Reported Psychiatric Improvements and Enduring Positive Life Changes

Abstract

Mescaline is a naturally occurring psychoactive alkaloid that has been used as a sacrament by Indigenous populations in spiritual ritual and healing ceremonies for millennia. Despite promising early preliminary research and favorable anecdotal reports, there is limited research investigating mescaline’s psychotherapeutic potential. We administered an anonymous online questionnaire to adults (N = 452) reporting use of mescaline in naturalistic settings about mental health benefits attributed to mescaline. We assessed respondents’ self-reported improvements in depression, anxiety, post-traumatic stress disorder (PTSD), and alcohol and drug use disorders (AUD and DUD). Of the respondents reporting histories of these clinical conditions, most (68-86%) reported subjective improvement following their most memorable mescaline experience. Respondents who reported an improvement in their psychiatric conditions reported significantly higher ratings of acute psychological factors including mystical-type, psychological insight, and ego dissolution effects compared to those who did not report improvements (Cohen’s d range 0.7 – 1.5). Many respondents (35-50%) rated the mescaline experience as the single or top five most spiritually significant or meaningful experience(s) of their lives. Acute experiences of psychological insight during their mescaline experience were associated with increased odds of reporting improvement in depression, anxiety, AUD and DUD. Additional research is needed to corroborate these preliminary findings and to rigorously examine the efficacy of mescaline for psychiatric treatment in controlled, longitudinal clinical trials.

Agin-Liebes, G., Haas, T. F., Lancelotta, R., Uthaug, M. V., Ramaekers, J. G., & Davis, A. K. (2021). Naturalistic Use of Mescaline Is Associated with Self-Reported Psychiatric Improvements and Enduring Positive Life Changes. ACS pharmacology & translational science, 4(2), 543–552. https://doi.org/10.1021/acsptsci.1c00018

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Pharmacological-assisted Psychotherapy for Post-Traumatic Stress Disorder: a systematic review and meta-analysis

Abstract

Background: Pharmacological-assisted psychotherapies, using conventional and novel drug agents, are increasingly being used both in clinical and experimental research settings, respectively. Objective: To determine the efficacy of conventional and novel pharmacological-assisted psychotherapies in reducing PTSD symptom severity. Method: A systematic review and meta-analysis of randomised-controlled trials were undertaken; 21 studies were included. Results: MDMA-assisted therapy was found to statistically superior to active and inactive placebo-assisted therapy in reduction of PTSD symptoms (standardised mean difference -1.09, 95% CI -1.60 to -0.58). There was no evidence of superiority over placebo for any other intervention. Conclusions: MDMA-assisted therapy demonstrated an impressive effect size; however, it is difficult to have confidence at this stage in this intervention due to the small numbers of participants included, and more research in this area is needed. There was no evidence to support the efficacy of any other drug-assisted interventions.

Hoskins, M. D., Sinnerton, R., Nakamura, A., Underwood, J., Slater, A., Lewis, C., Roberts, N. P., Bisson, J. I., Lee, M., & Clarke, L. (2021). Pharmacological-assisted Psychotherapy for Post-Traumatic Stress Disorder: a systematic review and meta-analysis. European journal of psychotraumatology, 12(1), 1853379. https://doi.org/10.1080/20008198.2020.1853379

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A comparison of MDMA-assisted psychotherapy to non-assisted psychotherapy in treatment-resistant PTSD: A systematic review and meta-analysis

Abstract

Rationale: Novel, evidence-based treatments are required for treatment-resistant post-traumatic stress disorder (PTSD). 3,4-Methylenedioxymethamphetamine (MDMA) has beneficially augmented psychotherapy in several small clinical trials.

Objective: To review the use of MDMA-assisted psychotherapy in treatment-resistant PTSD.

Methods: Systematic searches of four databases were conducted from inception to February 2020. A meta-analysis was performed on trials which were double-blinded, randomised, and compared MDMA-assisted psychotherapy to psychotherapy and placebo. The primary outcomes were the differences in Clinician Administered PTSD Scale (CAPS-IV) score and Beck’s Depression Inventory (BDI). Secondary outcome measures included neurocognitive and physical adverse effects, at the time, and within 7 days of intervention.

Results: Four randomised controlled trials (RCTs) met inclusion criteria. When compared to active placebo, intervention groups taking 75 mg (MD -46.90; 95% (confidence intervals) CI -58.78, -35.02), 125 mg (MD -20.98; 95% CI -34.35, -7.61) but not 100 mg (MD -12.90; 95% CI -36.09, 10.29) of MDMA with psychotherapy, had significant decreases in CAPS-IV scores, as did the inactive placebo arm (MD -33.20; 95% CI -40.53, -25.87). A significant decrease in BDI when compared to active placebo (MD -10.80; 95% CI -20.39, -1.21) was only observed at 75 mg. Compared to placebo, participants reported significantly more episodes of low mood, nausea and jaw-clenching during sessions and lack of appetite after 7 days.

Conclusion: These results demonstrate potential therapeutic benefit with minimal physical and neurocognitive risk for the use of MDMA-assisted psychotherapy in TR-PTSD, despite little effect on Beck’s Depression Inventory. Better powered RCTs are required to investigate further.

Illingworth, B. J., Lewis, D. J., Lambarth, A. T., Stocking, K., Duffy, J. M., Jelen, L. A., & Rucker, J. J. (2021). A comparison of MDMA-assisted psychotherapy to non-assisted psychotherapy in treatment-resistant PTSD: A systematic review and meta-analysis. Journal of psychopharmacology (Oxford, England), 35(5), 501–511. https://doi.org/10.1177/0269881120965915

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MDMA-facilitated cognitive-behavioural conjoint therapy for posttraumatic stress disorder: an uncontrolled trial

Abstract

Cognitive-behavioural conjoint therapy (CBCT) for PTSD has been shown to improve PTSD, relationship adjustment, and the health and well-being of partners. MDMA (3,4-methylenedioxymethamphetamine) has been used to facilitate an individual therapy for PTSD. This study was an initial test of the safety, tolerability, and efficacy of MDMA-facilitated CBCT. Six couples with varying levels of baseline relationship satisfaction in which one partner was diagnosed with PTSD participated in a condensed version of the 15-session CBCT protocol delivered over 7 weeks. There were two sessions in which both members of the couple were administered MDMA. All couples completed the treatment protocol, and there were no serious adverse events in either partner. There were significant improvements in clinician-assessed, patient-rated, and partner-rated PTSD symptoms (pre- to post-treatment/follow-up effect sizes ranged from d = 1.85-3.59), as well as patient depression, sleep, emotion regulation, and trauma-related beliefs. In addition, there were significant improvements in patient and partner-rated relationship adjustment and happiness (d =.64-2.79). These results are contextualized in relation to prior results from individual MDMA-facilitated psychotherapy and CBCT for PTSD alone. MDMA holds promise as a facilitator of CBCT to achieve more robust and broad effects on individual and relational functioning in those with PTSD and their partners.

Monson, C. M., Wagner, A. C., Mithoefer, A. T., Liebman, R. E., Feduccia, A. A., Jerome, L., Yazar-Klosinski, B., Emerson, A., Doblin, R., & Mithoefer, M. C. (2020). MDMA-facilitated cognitive-behavioural conjoint therapy for posttraumatic stress disorder: an uncontrolled trial. European journal of psychotraumatology, 11(1), 1840123. https://doi.org/10.1080/20008198.2020.1840123

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Therapeutic effects of classic serotonergic psychedelics: A systematic review of modern-era clinical studies

Abstract

Objective: To conduct a systematic review of modern-era (post-millennium) clinical studies assessing the therapeutic effects of serotonergic psychedelics drugs for mental health conditions. Although the main focus was on efficacy and safety, study characteristics, duration of antidepressants effects across studies, and the role of the subjective drug experiences were also reviewed and presented.

Method: A systematic literature search (1 Jan 2000 to 1 May 2020) was conducted in PubMed and PsychINFO for studies of patients undergoing treatment with a serotonergic psychedelic.

Results: Data from 16 papers, representing 10 independent psychedelic-assisted therapy trials (psilocybin = 7, ayahuasca = 2, LSD = 1), were extracted, presented in figures and tables, and narratively synthesized and discussed. Across these studies, a total of 188 patients suffering either cancer- or illness-related anxiety and depression disorders (C/I-RADD), major depressive disorder (MDD), obsessive-compulsive disorder (OCD) or substance use disorder (SUD) were included. The reviewed studies established feasibility and evidence of safety, alongside promising early data of efficacy in the treatment of depression, anxiety, OCD, and tobacco and alcohol use disorders. For a majority of patients, the therapeutic effects appeared to be long-lasting (weeks-months) after only 1 to 3 treatment session(s). All studies were conducted in line with guidelines for the safe conduct of psychedelic therapy, and no severe adverse events were reported.

Conclusion: The resurrection of clinical psychedelic research provides early evidence for treatment efficacy and safety for a range of psychiatric conditions, and constitutes an exciting new treatment avenue in a health area with major unmet needs.

Andersen, K., Carhart-Harris, R., Nutt, D. J., & Erritzoe, D. (2021). Therapeutic effects of classic serotonergic psychedelics: A systematic review of modern-era clinical studies. Acta psychiatrica Scandinavica, 143(2), 101–118. https://doi.org/10.1111/acps.13249

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Combining Ketamine, Brain Stimulation (rTMS) and Mindfulness Therapy (TIMBER) for Opioid Addiction

Abstract

Opioid addiction in the United States currently presents a national crisis despite availability of different treatments. Prior findings suggest that both repetitive transcranial magnetic stimulation (rTMS) and subanesthetic dose of ketamine are efficacious in patients with opioid use disorders (OUD) when administered in isolation. However, their therapeutic value may be undermined by varying clinical responses that tend to dissipate with treatment cessation. There has been no study to date that has used a combination of both for OUD, and there are still many unanswered questions with respect to both. TIMBER (Trauma Interventions using Mindfulness Based Extinction and Reconsolidation of memories) therapy attempts to alter the expression of emotionally charged memories such as traumatic memories, and has been successfully tried in chronic post-traumatic stress disorder (PTSD) and in combination with memory-altering pharmacotherapy like ketamine infusion. By a combination of extinction and reconsolidation of memory approaches, TIMBER works to not over-flood and/or retraumatize as is seen in other treatment approaches. TIMBER involves a balanced combination of both the memory extinction and memory reconsolidation approaches (rather than extinction-only approaches) which explains its superior efficacy in PTSD and benefit in substance use disorders.

Pradhan, B., & Rossi, G. (2020). Combining Ketamine, Brain Stimulation (rTMS) and Mindfulness Therapy (TIMBER) for Opioid Addiction. Cureus, 12(11), e11798. https://doi.org/10.7759/cureus.11798

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Discontinuation of medications classified as reuptake inhibitors affects treatment response of MDMA-assisted psychotherapy

Abstract

Rationale: MDMA-assisted psychotherapy is under investigation as a novel treatment for posttraumatic stress disorder (PTSD). The primary mechanism of action of MDMA involves the same reuptake transporters targeted by antidepressant medications commonly prescribed for PTSD.

Objectives: Data were pooled from four phase 2 trials of MDMA-assisted psychotherapy. To explore the effect of tapering antidepressant medications, participants who had been randomized to receive active doses of MDMA (75-125 mg) were divided into two groups (taper group (n = 16) or non-taper group (n = 34)).

Methods: Between-group comparisons were made for PTSD and depression symptom severity at the baseline and the primary endpoint, and for peak vital signs across two MDMA sessions.

Results: Demographics, baseline PTSD, and depression severity were similar between the taper and non-taper groups. At the primary endpoint, the non-taper group (mean = 45.7, SD = 27.17) had a significantly (p = 0.009) lower CAPS-IV total scores compared to the taper group (mean = 70.3, SD = 33.60). More participants in the non-taper group (63.6%) no longer met PTSD criteria at the primary endpoint than those in the taper group (25.0%). The non-taper group (mean = 12.7, SD = 10.17) had lower depression symptom severity scores (p = 0.010) compared to the taper group (mean = 22.6, SD = 16.69). There were significant differences between groups in peak systolic blood pressure (p = 0.043) and diastolic blood pressure (p = 0.032).

Conclusions: Recent exposure to antidepressant drugs that target reuptake transporters may reduce treatment response to MDMA-assisted psychotherapy.

Feduccia, A. A., Jerome, L., Mithoefer, M. C., & Holland, J. (2021). Discontinuation of medications classified as reuptake inhibitors affects treatment response of MDMA-assisted psychotherapy. Psychopharmacology, 238(2), 581–588. https://doi.org/10.1007/s00213-020-05710-w

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