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Colloca L, Fava M. What should constitute a control condition in psychedelic drug trials? NATURE. MENTAL HEALTH 2024; 2:1152-1160. [PMID: 39781538 PMCID: PMC11709123 DOI: 10.1038/s44220-024-00321-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 08/30/2024] [Indexed: 01/12/2025]
Abstract
Over the past decade there has been a surge in interest in placebo-controlled trials using non-classical 3,4-methylenedioxymethamphetamine (MDMA) and classical psychedelics such as psilocybin, lysergic acid diethylamide (LSD) and N,N-dimethyltryptamine (DMT) to treat neuropsychiatric disorders. However, the success and reliability of these trials depend on the design of the trials, the choice of control conditions, and the ability to blind both participants and researchers. When appropriate control conditions are lacking, it becomes difficult to disentangle placebo and expectation effects from medication effects. Here we explore the neurobiology of placebo and expectation effects, alongside the methodological considerations for selecting suitable control conditions in psychedelic trials. This includes examining the advantages and disadvantages of various control conditions and proposing new directions to enhance the validity of these trials and their regulatory science. By addressing these factors, we aim to improve the reliability of psychedelic research in uncovering the therapeutic benefits of psychedelics beyond placebo and expectation effects.
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Affiliation(s)
- Luana Colloca
- Department of Pain and Translational Symptom Science, Placebo Beyond Opinions Center, University of Maryland School of Nursing, Baltimore, MD, USA
| | - Maurizio Fava
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
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Neogi T, Colloca L. Placebo effects in osteoarthritis: implications for treatment and drug development. Nat Rev Rheumatol 2023; 19:613-626. [PMID: 37697077 PMCID: PMC10615856 DOI: 10.1038/s41584-023-01021-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2023] [Indexed: 09/13/2023]
Abstract
Osteoarthritis (OA) is the most common form of arthritis worldwide, affecting ~500 million people, yet there are no effective treatments to halt its progression. Without any structure-modifying agents, management of OA focuses on ameliorating pain and improving function. Treatment approaches typically have modest efficacy, and many patients have contraindications to recommended pharmacological treatments. Drug development for OA is hindered by the gradual and progressive nature of the disease and the targeting of established disease in clinical trials. Additionally, new medications for OA cannot receive regulatory approval without demonstrating improvements in both structure (pathological features of OA) and symptoms (reduced pain and/or improved function). In clinical trials, people with OA show high 'placebo responses', which hamper the ability to identify new effective treatments. Placebo responses refer to the individual variability in response to placebos given in the context of clinical trials and other settings. Placebo effects refer specifically to short-lasting improvements in symptoms that occur because of physiological changes. To mitigate the effects of the placebo phenomenon, we must first understand what it is, how it manifests, how to identify placebo responders in OA trials and how these insights can be used to improve clinical trials in OA. Leveraging placebo responses and effects in clinical practice might provide additional avenues to augment symptom management of OA.
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Affiliation(s)
- Tuhina Neogi
- Section of Rheumatology, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Luana Colloca
- Department of Pain and Translation Symptom Science, School of Nursing, University of Maryland, Baltimore, MD, USA.
- Placebo Beyond Opinions Center, School of Nursing, University of Maryland, Baltimore, MD, USA.
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Kwon AH, Colloca L, Mackey SC. Blinded Pain Cocktails: A Reliable and Safe Opioid Weaning Method. Anesthesiol Clin 2023; 41:371-381. [PMID: 37245948 DOI: 10.1016/j.anclin.2023.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Weaning opioids in patients with noncancerous chronic pain often poses a challenge when psychosocial factors complicate the patient's chronic pain syndrome and opioid use. A blinded pain cocktail protocol used to wean opioid therapy has been described since the 1970s. At the Stanford Comprehensive Interdisciplinary Pain Program, a blinded pain cocktail remains a reliably effective medication-behavioral intervention. This review (1) outlines psychosocial factors that may complicate opioid weaning, (2) describes clinical goals and how to use blinded pain cocktails in opioid tapering, and (3) summarizes the mechanism of dose-extending placebos and ethical justification of its use in clinical practice.
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Affiliation(s)
- Albert Hyukjae Kwon
- Stanford University School of Medicine, 430 Broadway Street, Pavilion C, 3rd Floor, Redwood City, CA 94063, USA.
| | - Luana Colloca
- Pain and Translational Symptom Science, Placebo Beyond Opinions Center, School of Nursing, University of Maryland, Baltimore, 655 West Lombard Street, Room 729A, Baltimore, MD 21201, USA
| | - Sean C Mackey
- Stanford University School of Medicine, 1070 Arastradero Road, Suite 200, Palo Alto, CA 94304, USA
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Gazaway S, Bakitas MA, Elk R, Eneanya ND, Dionne-Odom JN. Engaging African American family Caregivers in Developing a Culturally-responsive Interview Guide: A Multiphase Process and Approach. J Pain Symptom Manage 2022; 63:e705-e711. [PMID: 35247583 PMCID: PMC9133041 DOI: 10.1016/j.jpainsymman.2022.02.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/11/2022] [Accepted: 02/18/2022] [Indexed: 11/21/2022]
Abstract
Qualitatively eliciting historically marginalized populations' beliefs, values, and preferences is critical to capturing information that authentically characterizes their experiences and can be used to develop culturally-responsive interventions. Eliciting these rich perspectives requires researchers to have highly effective qualitative interviewing guides, which can be optimized through community engagement. However, researchers have had little methodological guidance on how community member engagement can aid development of interview guides. The purpose of this article is to provide a series of steps, each supported by a case example from our work with African American family caregivers, for developing an interview guide through community engagement. We conclude by highlighting how involving historically marginalized community members in these early stages of research study development can build trust, research partnerships, and acknowledge their contribution to the development of new knowledge.
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Affiliation(s)
- Shena Gazaway
- School of Nursing (S.G., M.A.B., J.N.D.-O.), University of Alabama at Birmingham, Birmingham, Alabama, USA; Center for Palliative and Supportive Care (S.G., M.A.B., R.E., J.N.D.-O.), University of Alabama at Birmingham, Birmingham, Alabama, USA.
| | - Marie A Bakitas
- School of Nursing (S.G., M.A.B., J.N.D.-O.), University of Alabama at Birmingham, Birmingham, Alabama, USA; Center for Palliative and Supportive Care (S.G., M.A.B., R.E., J.N.D.-O.), University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Ronit Elk
- Center for Palliative and Supportive Care (S.G., M.A.B., R.E., J.N.D.-O.), University of Alabama at Birmingham, Birmingham, Alabama, USA; School of Medicine (R.E.), Division of Geriatrics, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Nwamaka D Eneanya
- Perelman School of Medicine (N.D.E.), University of Pennsylvania, Philadelphia, Pennsylvania, USA; Palliative and Advanced Illness Research (PAIR) Center (N.D.E.), University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - J Nicholas Dionne-Odom
- School of Nursing (S.G., M.A.B., J.N.D.-O.), University of Alabama at Birmingham, Birmingham, Alabama, USA; Center for Palliative and Supportive Care (S.G., M.A.B., R.E., J.N.D.-O.), University of Alabama at Birmingham, Birmingham, Alabama, USA
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Bedford T, Kisaalita N, Haycock NR, Mullins CD, Wright T, Curatolo M, Hamlin L, Colloca L. Attitudes Toward a Pre-authorized Concealed Opioid Taper: A Qualitative Analysis of Patient and Clinician Perspectives. Front Psychiatry 2022; 13:820357. [PMID: 35401245 PMCID: PMC8987573 DOI: 10.3389/fpsyt.2022.820357] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 02/23/2022] [Indexed: 11/18/2022] Open
Abstract
Standard opioid tapers tend to be associated with increased patient anxiety and higher pain ratings. Pre-authorized concealed opioid reductions may minimize expectations such as fear of increased pain due to the reduction of opioids and, prolong analgesic benefits in experimental settings. We recently observed that patients and clinicians are open to concealed opioid tapering. However, little is known about the "why" behind their attitudes. Based on this lack of data, we analyzed qualitative responses to survey questions on patients' and clinicians' acceptance of a concealed opioid reduction for chronic pain. Seventy-four patients with a history of high dose opioid therapy and 49 clinicians completed a web-based questionnaire with open-ended questions examining responses to two hypothetical clinical trials comparing a concealed opioid reduction pre-authorized by patients vs. standard tapering. We used content analysis based on qualitative descriptive methodology to analyze comments from the patients and clinicians. Five themes were identified: informed consent; anxiety; safety; support; and ignorance is bliss, or not. These themes highlight the overall positive attitudes toward concealed opioid tapers. Our findings reinforce the importance of patient-centered care and are expected to inform the design of clinical trials from both the patient and clinician perspective. This qualitative study presents patients' and clinicians' attitudes toward hypothetical scenarios for a trial of pre-authorized reduction of opioids. The findings indicate positive attitudes and the relevance of engaging patients with effective decision-making processes.
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Affiliation(s)
- Theresa Bedford
- 711 Human Performance Wing, En Route Care, Wright Patterson Air Force Base, OH, United States
| | - Nkaku Kisaalita
- Mental Health Service Line, Orlando Veterans Affairs Healthcare System, Orlando, FL, United States
| | - Nathaniel R Haycock
- Department of Pain and Translational Symptom Science, School of Nursing, University of Maryland, Baltimore, MD, United States
| | - C Daniel Mullins
- Department of Pharmaceutical Health Services Research, School of Pharmacy, University of Maryland, Baltimore, MD, United States
| | - Thelma Wright
- Department of Anesthesiology, School of Medicine, University of Maryland, Baltimore, MD, United States
| | - Michele Curatolo
- Department of Anesthesiology & Pain Medicine, School of Medicine, University of Washington, Seattle, WA, United States
| | - Lynette Hamlin
- Uniformed Services University of the Health Sciences, Graduate School of Nursing, Bethesda, MD, United States
| | - Luana Colloca
- Department of Pain and Translational Symptom Science, School of Nursing, University of Maryland, Baltimore, MD, United States.,Department of Anesthesiology, School of Medicine, University of Maryland, Baltimore, MD, United States.,Center to Advance Chronic Pain Research, University of Maryland, Baltimore, MD, United States
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