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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04060875
Other study ID # SAIRB-17-0063
Secondary ID
Status Completed
Phase
First received
Last updated
Start date September 21, 2017
Est. completion date June 1, 2021

Study information

Verified date June 2021
Source Karuna Labs Inc.
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The purpose of this study is to investigate, in two phases: (1) the feasibility and safety of Virtual Embodiment Therapy in treating chronic pain of lower back and upper limbs and (2) the efficacy of Virtual Embodiment Therapy on chronic pain disorders of the lower back and upper limbs. In phase 1, we will investigate the feasibility, safety, and side effects related to this treatment by assessing simulator sickness. In phase 2, which in contingent on successful completion of phase 1, we will assess symptoms of pain specific to the region treated, fear and avoidance behavior, and depression symptoms before and after 8 sessions of treatment with Virtual Embodiment Therapy in order to assess efficacy. This study will be single-blinded, because the participation of the clinician is necessary to ensure proper administration of the therapy, as well as to monitor in the event of adverse reactions.


Description:

This multi-site study aims to investigate the feasibility, safety, and efficacy of using embodied virtual reality graded motor imagery software to treat adults with diagnosed chronic central pain conditions in two bodily regions: chronic pain in the lower back and in the upper limbs. The research will be conducted in two phases, the second of which is contingent upon successful completion of the first. The first phase will involve piloting a novel virtual reality treatment for chronic pain to investigate feasibility and safety with a smaller number of patients (N=30 for each condition). The second phase of the research will investigate efficacy using a single-blinded randomized control study design with sham control. Chronic pain conditions of the lower back and upper limbs will be investigated separately, and power analyses have been conducted to determine optimal study size, which is N=200 for each portion. Central pain is defined as pain that originates in the central nervous system, and is not immediately due to injury, but is possibly a delayed reaction to injury. Example conditions eligible for this study include chronic lower back pain, as well as phantom limb pain, complex regional pain syndrome, carpal tunnel syndrome, post-stroke limb pain, and repetitive strain injuries of the shoulder, arm or hand. In the pilot phase of the study, 30 subjects with chronic lower back pain and 30 subjects with chronic upper limb pain will receive 8 sessions of graded motor imagery virtual reality therapy. Contingent on the success of the pilot, defined as completion of 8 session with no adverse events, and trends indicating improvement of range of motion, pain, fear/avoidance, and depression symptoms, the randomized control trial phase of the research will proceed. In the randomized phase, subjects will be randomized into active or control conditions. Active condition subjects will receive 8 sessions of graded motor imagery in virtual reality, and control condition subjects will receive a non-embodied sham virtual reality experience. This study will investigate the safety and feasibility of this approach, as well as its effects on pain symptoms. This product is considered a non-significant risk device, as is explained in the accompanying letter from the sponsor, Karuna Labs Inc. A request for feedback from the presubmission program of the U.S. Food and Drug Administration has additionally been submitted.


Recruitment information / eligibility

Status Completed
Enrollment 24
Est. completion date June 1, 2021
Est. primary completion date June 1, 2021
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 70 Years
Eligibility Inclusion Criteria: 1. Able to understand the English language 2. Have had a chronic central pain of the lower back or upper limbs diagnosis for 3 months or longer 3. Can attend sessions at the study center twice a week for 4 weeks 4. Able to wear a VR HMD (head-mounted display) and move head in cervical rotation, extension, and flexion Exclusion Criteria: 1. Individuals with a history of Severe Mental Illness, including schizophrenia, bipolar disorder I or II, or PTSD 2. History of susceptibility to seizures per subject's reporting 3. Pregnant woman

Study Design


Intervention

Device:
Karuna Labs Virtual Reality Software
The subjects will engage in the three therapeutic modules: laterality, motor imagery, and 'mirroring.' The decision of which module to employ will be based on the subject's readiness and comfort on a case-by-case basis. A subject visit can be expected to last 40 minutes, with enough time to complete PHQ-9, and to accustom to the virtual reality setup by playing in a non-therapeutic virtual environment should they choose to do so. Time in the virtual reality is expected to last approximately 20 minutes per session.

Locations

Country Name City State
United States Remedy Medical Group San Francisco California

Sponsors (1)

Lead Sponsor Collaborator
Karuna Labs Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Adverse events Safety and feasibility 1-2 months
Primary Simulator Sickness Questionnaire The questionnaire asks participants to score 16 symptoms on a four point scale (0-3). The scale measures susceptibility to nausea, general discomfort, stomach awareness, sweating, increased salivation, vertigo, burping, dizziness with eyes open, fullness of head, dizziness with eyes closed, difficulty focusing, headache, blurred vision, fatigue, and eye strain 1-2 months
Primary Visual Analogue Scale (VAS) The pain Visual Analogue Scale is a unidimensional measure of pain intensity. Patients are asked to rate the intensity of their pain using a horizontal line 10 centimeters (100 mm) in length. For pain intensity, the scale is anchored by "no pain" (score of 0) and "pain as bad as it could be" or "worst imaginable pain" (score of 100 [100-mm scale]) 1-2 months
Secondary Fear and Avoidance Beliefs Questionnaire The Fear and Avoidance Beliefs Questionnaire is a questionnaire based on the Fear-Avoidance Model of Exaggerated Pain Perception. The questionnaire consists of 16 items in which a patient rates their agreement with each statement on a 7-point Likert scale. Where 0= completely disagree, 6=completely agree. There is a maximum score of 96. A higher score indicates more strongly held fear-avoidance beliefs. There are two subscales within the FABQ; the work subscale (FABQw) with 7 questions (maximum score of 42) and the physical activity subscale (FABQpa) with 4 questions (maximum score of 24) 1-2 months
Secondary OSWESTRY Disability Index Questionnaire A patient-completed questionnaire which gives a subjective percentage score of level of function (disability) in activities of daily living in those with low back pain. Questionnaire examines perceived level of disability in 10 everyday activities of daily living concerning the intensity of pain, lifting, ability to care for oneself, ability to walk, ability to sit, sexual function, ability to stand, social life, sleep quality, and ability to travel. 1-2months
Secondary Pain Catastrophizing Scale The Pain Catastrophizing Scale is a 13 item scale, with each item rated on a 5-point scale: 0 (Not at all) to 4 (all the time). The PCS is broken into three subscales being magnification, rumination, and helplessness. The scale was developed as a self-report measurement tool that provided a valid index of catastrophizing in clinical and non-clinical populations 1-2 months
Secondary Patient Health Questionnaire The Patient Health Questionnaire is a multipurpose instrument for screening, diagnosing, monitoring and measuring the severity of depression. The PHQ-9 consists of 9 items of DSM-IV criteria as "0" (not at all) to "3" (nearly every day) 1-2 months
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