HypErthermia as an Additional Treatment for the Biology and Experience of Depression: Study 2

Study Results

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-02-15

Study Completion Date

2024-09-30

Brief Summary

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This randomized two-arm intervention trial administers 8 weekly cognitive behavioral therapy (CBT) sessions and 4 bi-weekly active whole-body hyperthermia (active WBH) sessions or 4 bi-weekly sham WBH sessions to adults aged 18 years or older with major depressive disorder (MDD).

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Detailed Description

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Major Depressive Disorder afflicts more than 300 million people worldwide and is the leading cause of life years lost to disability. Current treatments have important limitations in efficacy and, in the case of medication, substantial side-effects. There is thus a compelling need for additional effective, well-tolerated treatments. One such potential treatment is whole-body hyperthermia (WBH). The investigators hypothesize that active WBH may be particularly effective in combination with cognitive behavioral therapy (CBT), an established treatment for depression. This randomized two-arm trial will pilot and optimize procedures for randomizing participants to receive CBT (8 weekly sessions) and 4 bi-weekly whole-body hyperthermia (active WBH) or 4 bi-weekly sham WBH sessions. This work holds important promise to improve treatment of depression and advance understanding of the role of integrated mind-body therapies for mood disorders.

Conditions

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Major Depressive Disorder Depression

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participants are randomized to one of two study arms

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Outcome Assessors

Study clinicians, who perform clinical interviews and provide cognitive behavioral therapy (CBT) treatments, will be masked to participant condition.

Study Groups

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Active Whole-body Hyperthermia (Active Treatment)

Participants receive 8 cognitive behavioral therapy (CBT) sessions and 4 bi-weekly whole-body hyperthermia (WBH) sessions that raise core body temperature to 38.5 C. Each active WBH session (including preparation and post-session activities) is up to approximately 3.5 hours, and each CBT session is approximately 50 minutes.

Group Type EXPERIMENTAL

Cognitive Behavioral Therapy (CBT)

Intervention Type BEHAVIORAL

Cognitive Behavioral Therapy (CBT) is a behavioral (psychotherapeutic) intervention for major depressive disorder (MDD). A highly trained masters' or PhD-level clinician will administer 8 weekly CBT sessions (\~50 minutes each), following the standard cognitive behavioral therapy for depression protocol.

Active Whole-Body Hyperthermia (Active WBH)

Intervention Type DEVICE

Active whole-body hyperthermia (active WBH) will be administered by trained research assistants. Preparation for the active WBH session, the active WBH session, and cool down will last 3.5 hours, with heating lasting approximately 90-100 minutes (and no longer than 140 minutes). The treatment will take place in an infrared sauna dome, and the active heating phase will last until the participants has achieved a core (rectal) temperature of 38.5 C.

Sham Whole-body Hyperthermia (Sham Treatment)

Participants receive 8 cognitive behavioral therapy (CBT) sessions and 4 bi-weekly sham whole-body hyperthermia (WBH) sessions, which minimally raise body temperature. Each sham WBH session (including preparation and post-session activities) is up to approximately 3.5 hours, and each CBT session is approximately 50 minutes.

Group Type PLACEBO_COMPARATOR

Cognitive Behavioral Therapy (CBT)

Intervention Type BEHAVIORAL

Cognitive Behavioral Therapy (CBT) is a behavioral (psychotherapeutic) intervention for major depressive disorder (MDD). A highly trained masters' or PhD-level clinician will administer 8 weekly CBT sessions (\~50 minutes each), following the standard cognitive behavioral therapy for depression protocol.

Sham Whole-Body Hyperthermia (Sham WBH)

Intervention Type DEVICE

Sham whole-body hyperthermia (sham WBH) will be administered by trained research assistants. Preparation for the sham WBH session, the sham WBH session, and cool down will last 3.5 hours, with heating lasting approximately 90-100 minutes (and no longer than 140 minutes). The treatment will take place in an infrared sauna dome, and the sham WBH session will minimally impact core body temperature.

Interventions

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Cognitive Behavioral Therapy (CBT)

Cognitive Behavioral Therapy (CBT) is a behavioral (psychotherapeutic) intervention for major depressive disorder (MDD). A highly trained masters' or PhD-level clinician will administer 8 weekly CBT sessions (\~50 minutes each), following the standard cognitive behavioral therapy for depression protocol.

Intervention Type BEHAVIORAL

Active Whole-Body Hyperthermia (Active WBH)

Active whole-body hyperthermia (active WBH) will be administered by trained research assistants. Preparation for the active WBH session, the active WBH session, and cool down will last 3.5 hours, with heating lasting approximately 90-100 minutes (and no longer than 140 minutes). The treatment will take place in an infrared sauna dome, and the active heating phase will last until the participants has achieved a core (rectal) temperature of 38.5 C.

Intervention Type DEVICE

Sham Whole-Body Hyperthermia (Sham WBH)

Sham whole-body hyperthermia (sham WBH) will be administered by trained research assistants. Preparation for the sham WBH session, the sham WBH session, and cool down will last 3.5 hours, with heating lasting approximately 90-100 minutes (and no longer than 140 minutes). The treatment will take place in an infrared sauna dome, and the sham WBH session will minimally impact core body temperature.

Intervention Type DEVICE

Other Intervention Names

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Active Sauna Sessions Sham Sauna Sessions

Eligibility Criteria

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Inclusion Criteria

* Age of at least 18 years old
* Current major depressive episode of at least 2 weeks duration as assessed by the Structured Clinical Interview for DSM-5 (SCID) and a Beck Depression Inventory-II (BDIII) score \> 21 at screening
* Able to understand the nature of the study and able to provide written informed consent prior to conduct of any study procedures
* Must have smartphone onto which the participant can download an app from Apple App or Google Play stores
* Ability to lie supine (on back) for 2 hours (required for sauna sessions)

Exclusion Criteria

* \>30% reduction in BDI-II score between Screen #1 and Screen #2 (conducted \~1 week after Screen #1)
* Suicide attempt in the past 12 months defined using the SAMHSA suicidality question during the clinician-administered interview or active suicidal ideation as indexed by a score of 3 on the BDI-II suicidality item during the clinician-administered interview
* Any of the following medical conditions: cardiovascular disease (other than controlled hypertension), seizure disorder, history of cerebrovascular accident (CVA) or other serious neurological condition (e.g. Parkinson's disease, multiple sclerosis, or dementia), current neoplasia, any active enclosed infection (e.g. dental abscess, joint infection), hemophilia or other cause for excessive bleeding (e.g. platelet disorder), or other medical condition that in the opinion of investigators may increase the risk of WBH
* Comorbid psychiatric conditions or history of comorbid psychiatric conditions that might better explain depressive symptoms, including schizophrenia, schizoaffective disorder, Bipolar Disorder I, Obsessive Compulsive Disorder, Anorexia Nervosa, Bulimia Nervosa, Alcohol Dependence, or Drug Dependence
* Known hypersensitivity to hyperthermia and/or infrared exposure
* Inability to fit into the sauna device
* Breast implants
* Pregnancy, active lactation or intention to become pregnant during the study period
* Use of any medication that might impact thermoregulatory capacity, including: Diuretics, barbiturates, beta-blockers, antipsychotic agents, anti-cholinergic agents or chronic use of antihistamines, aspirin (other than low-dose ASA for prophylactic purposes), medication prescribed for the treatment of depression (antidepressant medication \[ADM\]) including but not limited to: selective serotonin reuptake inhibitors \[SSRIs\], Serotonin and norepinephrine reuptake inhibitors \[SNRIs\], Monoamine oxidase inhibitors \[MAOIs\], Tricyclics \[TCAs\], and atypical antipsychotic and antidepressant medications (participants must have been free of these medications for at least 4 weeks), antibiotics (past 14 days), pain medication (opioids) due to procedure, e.g., dental procedure (past 14 days), Emergency contraception pill (past 14 days) any other medication that in the judgment of the PI would increase risk of study participation or introduce excessive variance into physiological or behavioral responses to WBH recent use (multiple consecutive doses) of: non-steroidal anti-inflammatory drugs (NSAIDs), systemic corticosteroids, cytokine antagonists
* Regular use of any nicotine products, including cigarettes, vapes, chewing tobacco, or other forms of nicotine (if use is not regular, must be willing to refrain for 24 hours before and 24 hours after WBH session)
* Unwilling to refrain from using marijuana products and alcohol for the 24 hours before and 24 hours after WBH session
* Unwilling to refrain from heavy exercise on the day of WBH sessions
* Unwilling to refrain from engaging with sauna, hot yoga, cold plunges, cryotherapy, and hot tub/jacuzzi outside of study (prospective participant must not have engaged with any of these activities for 30 days prior to their baseline study visit).
* Has begun new psychotherapy treatment in the prior 6 weeks

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No