Fibromyalgia
Conditions
Brief summary
The pressing need for effective fibromyalgia (FM) treatments, the known safety of psilocybin therapy, and the mechanistic plausibility for potential benefit provide a backdrop for investigating psilocybin therapy as a treatment for FM. The primary objective of this study is to evaluate the clinical benefit of oral psilocybin in concert with psychotherapy to treat chronic pain symptoms in patients with FM.
Detailed description
Fibromyalgia is a chronic syndrome of widespread musculoskeletal pain that often manifests with a cluster of co-occurring symptoms, including sleep disturbances, fatigue, cognitive dysfunction, and mood problems including anxiety and depression. Recent studies have provided evidence of altered central pain pathways. Current management of FM typically takes a multidimensional approach including behavioral therapy, exercise, and medication. However, current medications provide only modest benefit and carry significant side effect burden, leading many people with FM to seek other alternatives. Psilocybin therapy (psilocybin delivered in concert with psychotherapy) may be a potentially safe and effective treatment for symptoms associated with FM. Indeed, psilocybin therapy has shown positive effects in treating cancer-related psychiatric distress, depression and anxiety, treatment-resistant depression, and nicotine or alcohol addiction. The United States Food and Drug Administration (FDA) has granted a Breakthrough Therapy designation for psilocybin in treatment-resistant depression and major depressive disorder. Psilocybin therapy is generally safe and well-tolerated when conducted under controlled conditions. While no clinical studies have explored psychedelic effects among people with FM, a recent review outlined potential mechanisms through which psychedelics could alleviate chronic pain symptoms.
Interventions
DRUGPsilocybin
Two oral doses of psilocybin in a capsule formulation taken approximately 2 weeks apart.
BEHAVIORALPsychotherapy
1\. Pre-dose preparatory sessions; 2. Dosing day monitoring; and, 3. Post-dose integration sessions.
Sponsors
Kevin Boehnke
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
25 Years to 64 Years
Healthy volunteers
No
Inclusion criteria
Participants are eligible to be included in the study only if all of the following criteria apply: Age \- Participant must be 25 to 64 years of age, inclusive, at the time of signing the informed consent form. Type of Participant and Disease Characteristics * Participant must meet criteria for FM per the 2016 FM survey criteria. * Concurrent psychotherapy is allowed if the type and frequency of the therapy has been stable for at least 2 months prior to screening and is expected to remain stable during participation in the study. * Participant must be a non-smoker (tobacco). * Participant must be medically stable as determined by screening for medical problems via a personal interview and/or, a medical questionnaire, and an ECG, within 1 month of starting active intervention (performed during screening). * Participant must agree to consume approximately the same amount of caffeine-containing beverage (e.g., coffee, tea, cola) that he/she consumes on a usual morning, before arriving at the research unit on the mornings of psilocybin session days. If the participant does not routinely consume caffeinated beverages, he/she must agree to not do so on psilocybin session days. * Participant must agree to refrain from using any psychoactive drugs, including alcoholic beverages and nicotine, within 24 hours before and after each psilocybin administration. The exception is caffeine. * Participant must agree to not take sildenafil (Viagra®), tadalafil, or similar medications within 72 hours before and after each psilocybin administration. * Participant must agree to not take any pro re nata (PRN) medications on the mornings of psilocybin sessions. * Participant must agree that for 7 days before each psilocybin session, he/she will refrain from taking any nonprescription medication, cannabis, nutritional supplement, or herbal supplement except when approved by the Principal Investigator. Exceptions will be evaluated by the Principal Investigator and will include acetaminophen, non-steroidal anti-inflammatory drugs, and common doses of vitamins and minerals. * Participant must have at least a high school level of education or equivalent (e.g., General Educational Development \[GED\] Test). Sex and Contraceptive/Barrier Requirements * Contraceptive use by women and men should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. 1. Females of reproductive potential must agree to use effective birth control for the duration of active intervention (defined as the time from the Baseline \[deep phenotyping\] visit until the EOT \[deep phenotyping\] visit). 2. Sexually active male participants and/or their female partners must agree to use effective birth control for the duration of active intervention (defined as the time from the Baseline \[deep phenotyping\] visit until the EOT \[deep phenotyping\] visit) of the male participant. Male participants must also agree not to donate sperm for the duration of active intervention. Informed Consent * Participant has provided informed consent as described in Appendix 1, Section 10.1.3 which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
Exclusion criteria
Participants are excluded from the study if any of the following criteria apply: Medical Conditions * Participant has had (within the past 1 year) a cardiovascular condition such as coronary artery disease, stroke, angina, uncontrolled hypertension, a clinically significant ECG abnormality (e.g., atrial fibrillation), prolonged QTc interval (i.e., QTc \> 450 msec), artificial heart valve, or transient ischemic attack. * Participant has epilepsy with a history of seizures. * Participant has insulin-dependent diabetes. * Participant is taking an oral hypoglycemic agent and has a history of hypoglycemia. * Participant has active auto-immune disease (e.g., lupus, rheumatoid arthritis). * Participant has a current or past history of meeting Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) criteria for schizophrenia spectrum or other psychotic disorders (except substance/medication-induced or due to another medical condition), or bipolar I or II disorder measured via SCID-5 and SCID-5-PD. * Participant has a current or past history (within 1 year) of meeting DSM-5 criteria for a moderate or severe alcohol, tobacco, or other drug use disorder (excluding caffeine) measured via relevant questions from the SCID-5. * Participant has a history of a medically significant suicide attempt. Prior/Concomitant Therapy * Participant is taking psychoactive prescription medication (e.g., opioids, tramadol, benzodiazepines) on a regular basis (i.e., more than 2 times a week). * Participant is currently taking an antidepressant. Participants will also be required to refrain from using antidepressant medications through the completion of primary outcome assessments. Note: if a participant self-initiates a medication taper with the consent and support of their physician, they can re-screen after the appropriate time period. * Participant is currently taking bupropion or antidepressants other than selective serotonin reuptake inhibitors (SSRIs), selective norepinephrine reuptake inhibitors (SNRIs). * Participant is currently taking on a regular (e.g., daily) basis any medications having a primary centrally-acting serotonergic effect, including monoamine oxidase inhibitors (MAOIs). For individuals who have intermittent or PRN use of such medications, psilocybin sessions will not be conducted until at least 5 half-lives of the agent have elapsed after the last dose. * Participant tests above 0.02% blood alcohol content on breath alcohol testing and/or positive for cocaine, methamphetamine, or opioids on urine drug testing. * Participant has a psychiatric condition judged to be incompatible with establishment of rapport or safe exposure to psilocybin. Prior/Concurrent Clinical Study Experience \- Participant is currently in another clinical trial. Diagnostic assessments * Participant has a significant suicide risk as defined by: 1. suicidal ideation as endorsed on items 4 or 5 on the C-SSRS within the past year at Screening or at Baseline; or 2. suicidal behaviors within the past year; or 3. clinical assessment of significant suicidal risk during participant interviews * Participant has severe depression as measured through PHQ-8 at Screening. Other Exclusions * Participant is pregnant (as indicated by a positive urine pregnancy test assessed at Screening and before each psilocybin session) or nursing. * Participant is a WOCBP and sexually active, or a man and sexually active, and not practicing an effective means of birth control. * Participant has a confirmed first- or second-degree relative with schizophrenia spectrum or other psychotic disorders (except substance/medication-induced or due to another medical condition), or bipolar I or II disorder.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Adverse Events (AE) Incidence | Day 1 through Day 64 | Results reflect the total number of all adverse events that occurred during the trial. |
| Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | Day 36 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose | BPM was measured before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. |
| Blood Pressure (BP) - First Dose (15 mg) - Systolic | Day 22 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose | Systolic BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. Systolic BP greater than 200 for more than 15 minutes was considered to be an adverse event. |
| Blood Pressure (BP) - Second Dose (25 mg) - Systolic | Day 36 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose | BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. Systolic BP greater than 200 for more than 15 minutes was considered to be an adverse event. |
| Blood Pressure (BP) - First Dose (15 mg) - Diastolic | Day 22 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose | Diastolic BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. BP greater than 110 diastolic for more than 15 minutes was considered to be an adverse event. |
| Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | Day 36 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose | Diastolic BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. BP greater than 110 diastolic for more than 15 minutes was considered to be an adverse event. |
| Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | Day 22 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose | BPM was measured before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Sleep Disturbance | Day 1 and Day 64 | Sleep disturbance included assessment of sleep quality, perceived ability to fall and stay asleep, satisfaction of sleep, and depth of sleep. Sleep disturbance was measured using the Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep Disturbance Short Form 8b. The raw scores were converted to standardized T-scores, with 50 as the population mean with a standard deviation of 10, and higher scores indicating worse sleep disturbance. |
| Chronic Pain Acceptance | Day 1 and Day 64 | Chronic Pain Acceptance was measured using that Chronic Pain Acceptance Questionnaire-8 (CPAQ-8) that assessed activity engagement and pain willingness (e.g., recognizing that trying to avoid or control pain may be maladaptive for chronic pain). The lowest possible score was 0 (full chronic pain acceptance) and the highest possible score was 48 (no chronic pain acceptance). |
| Patient Global Impression of Change (PGI-C) | Day 64 | The PGI-C was a questionnaire that gauged the participant's response to medical interventions using a 7-point Likert scale ranging from 1 to 7 with 1 being very much improved and 7 being very much worse. |
| Chronic Pain Intensity Between Groups in the Study Period | Days 1-7 & Days 57-63 | Aggregated worst pain intensity scale from 0 (no pain) to 10 (highest pain possible) during 7-day epochs from day 1 through day 64. Participants' scores from Days 1-7 and Days 57-63 were compared. |
| Change in Pain Interference | Day 1 and Day 64 | Pain interference is the degree to which pain affects important aspects of an individual's life, such as social, cognitive, and physical activities. Pain interference was assessed using the Patient-Reported Outcomes Measurement Information System (PROMIS) pain interference scale from the PROMIS-29+2 Profile v2.1 (PROPr). The raw scores were converted to standardized T-scores, with 50 as the population mean with a standard deviation of 10, and higher scores indicating worse pain interference. |
Countries
United States
Participant flow
Pre-assignment details
17 participants were consented for this trial, 10 of whom were screen fails. Of the 7 remaining participants, 5 received the intervention and completed the trial.
Participants by arm
| Arm | Count |
|---|---|
| Open Label Dosing Arm (15mg and 25mg) This is an open-label study, and participants who meet the inclusion and exclusion criteria will be eligible and invited to enroll. Enrolled participants are planned to receive 2 doses of psilocybin: a 15 mg dose followed 2 weeks later by a 25 mg dose. The total planned duration of the study for an individual participant from screening to last follow-up is approximately 8 months.
Psilocybin: Two oral doses of psilocybin in a capsule formulation taken approximately 2 weeks apart.
Psychotherapy: 1. Pre-dose preparatory sessions; 2. Dosing day monitoring; and, 3. Post-dose integration sessions. | 17 |
| Total | 17 |
Withdrawals & dropouts
| Period | Reason | FG000 |
|---|---|---|
| Overall Study | Concerns about participant ability to follow study procedures | 1 |
| Overall Study | Physician Decision | 1 |
Baseline characteristics
| Characteristic | Open Label Dosing Arm (15mg and 25mg) |
|---|---|
| Age, Continuous | 45.06 years STANDARD_DEVIATION 14.41 |
| Ethnicity (NIH/OMB) Hispanic or Latino | 0 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 17 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 0 Participants |
| Race (NIH/OMB) American Indian or Alaska Native | 0 Participants |
| Race (NIH/OMB) Asian | 2 Participants |
| Race (NIH/OMB) Black or African American | 1 Participants |
| Race (NIH/OMB) More than one race | 0 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 0 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 0 Participants |
| Race (NIH/OMB) White | 14 Participants |
| Region of Enrollment United States | 17 Participants |
| Sex: Female, Male Female | 11 Participants |
| Sex: Female, Male Male | 6 Participants |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | 0 / 5 |
| other Total, other adverse events | 4 / 5 |
| serious Total, serious adverse events | 0 / 5 |
Outcome results
Primary
Adverse Events (AE) Incidence
Results reflect the total number of all adverse events that occurred during the trial.
Time frame: Day 1 through Day 64
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Value (NUMBER) |
|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Adverse Events (AE) Incidence | 20 Adverse Events |
Primary
Blood Pressure (BP) - First Dose (15 mg) - Diastolic
Diastolic BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. BP greater than 110 diastolic for more than 15 minutes was considered to be an adverse event.
Time frame: Day 22 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Group | Value (MEDIAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | Baseline (before capsule administration) | 81 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 30 minutes after capsule administration | 76 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 60 minutes after capsule administration | 74 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 90 minutes after capsule administration | 75 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 120 minutes after capsule administration | 75 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 180 minutes after capsule administration | 78 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 240 minutes after capsule administration | 64 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 300 minutes after capsule administration | 67 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Diastolic | 360 minutes after capsule administration | 84 mm Hg |
Primary
Blood Pressure (BP) - First Dose (15 mg) - Systolic
Systolic BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. Systolic BP greater than 200 for more than 15 minutes was considered to be an adverse event.
Time frame: Day 22 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Group | Value (MEDIAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | Baseline (before capsule administration) | 133 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 30 minutes after capsule administration | 126 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 60 minutes after capsule administration | 131 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 90 minutes after capsule administration | 137 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 120 minutes after capsule administration | 131 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 180 minutes after capsule administration | 141 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 240 minutes after capsule administration | 130 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 300 minutes after capsule administration | 128 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - First Dose (15 mg) - Systolic | 360 minutes after capsule administration | 135 mm Hg |
Primary
Blood Pressure (BP) - Second Dose (25 mg) - Diastolic
Diastolic BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. BP greater than 110 diastolic for more than 15 minutes was considered to be an adverse event.
Time frame: Day 36 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose
Population: Results reflect the participants who completed the trial. 1 participant elected to take a second 15 mg dose rather than the 25 mg dose. That participant's data was included in the results for this outcome.
| Arm | Measure | Group | Value (MEDIAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | Baseline (before capsule administration) | 82 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 30 minutes after capsule administration | 65 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 60 minutes after capsule administration | 74 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 90 minutes after capsule administration | 74 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 120 minutes after capsule administration | 70 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 180 minutes after capsule administration | 78 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 240 minutes after capsule administration | 80 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 300 minutes after capsule administration | 69 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Diastolic | 360 minutes after capsule administration | 80 mm Hg |
Primary
Blood Pressure (BP) - Second Dose (25 mg) - Systolic
BP was measured in millimeters of mercury (mm Hg) before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration. Systolic BP greater than 200 for more than 15 minutes was considered to be an adverse event.
Time frame: Day 36 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose
Population: Results reflect the participants who completed the trial. 1 participant elected to take a second 15 mg dose rather than the 25 mg dose. That participant's data was included in the results for this outcome.
| Arm | Measure | Group | Value (MEDIAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | Baseline (before capsule administration) | 135 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 30 minutes after capsule administration | 123 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 60 minutes after capsule administration | 140 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 90 minutes after capsule administration | 141 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 120 minutes after capsule administration | 127 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 180 minutes after capsule administration | 142 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 240 minutes after capsule administration | 134 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 300 minutes after capsule administration | 134 mm Hg |
| Open Label Dosing Arm (15mg and 25mg) | Blood Pressure (BP) - Second Dose (25 mg) - Systolic | 360 minutes after capsule administration | 141 mm Hg |
Primary
Heart Rate Beats Per Minute (BPM) - First Dose (15 mg)
BPM was measured before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration.
Time frame: Day 22 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Group | Value (MEDIAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | Baseline (before capsule administration) | 76 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 30 minutes after capsule administration | 67 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 60 minutes after capsule administration | 67 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 90 minutes after capsule administration | 68 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 120 minutes after capsule administration | 74 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 180 minutes after capsule administration | 83 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 240 minutes after capsule administration | 79 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 300 minutes after capsule administration | 82 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - First Dose (15 mg) | 360 minutes after capsule administration | 72 Heart beats per minute |
Primary
Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg)
BPM was measured before TRP-8802 capsule administration and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes after capsule administration.
Time frame: Day 36 Pre-Dose (Baseline) and at 30, 60, 90, 120, 180, 240, 300, and 360 minutes post-dose
Population: Results reflect the participants who completed the trial. 1 participant elected to take a second 15 mg dose rather than the 25 mg dose. That participant's data was included in the results for this outcome.
| Arm | Measure | Group | Value (MEDIAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | Baseline (before capsule administration) | 75 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 30 minutes after capsule administration | 85 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 60 minutes after capsule administration | 82 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 90 minutes after capsule administration | 80 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 120 minutes after capsule administration | 80 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 180 minutes after capsule administration | 75 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 240 minutes after capsule administration | 80 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 300 minutes after capsule administration | 86 Heart beats per minute |
| Open Label Dosing Arm (15mg and 25mg) | Heart Rate Beats Per Minute (BPM) - Second Dose (25 mg) | 360 minutes after capsule administration | 76 Heart beats per minute |
Secondary
Change in Pain Interference
Pain interference is the degree to which pain affects important aspects of an individual's life, such as social, cognitive, and physical activities. Pain interference was assessed using the Patient-Reported Outcomes Measurement Information System (PROMIS) pain interference scale from the PROMIS-29+2 Profile v2.1 (PROPr). The raw scores were converted to standardized T-scores, with 50 as the population mean with a standard deviation of 10, and higher scores indicating worse pain interference.
Time frame: Day 1 and Day 64
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Group | Value (MEAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Change in Pain Interference | Pre capsule administration (Day 1) | 62.5 t-score |
| Open Label Dosing Arm (15mg and 25mg) | Change in Pain Interference | Post capsule administration (Day 64) | 53.1 t-score |
Secondary
Chronic Pain Acceptance
Chronic Pain Acceptance was measured using that Chronic Pain Acceptance Questionnaire-8 (CPAQ-8) that assessed activity engagement and pain willingness (e.g., recognizing that trying to avoid or control pain may be maladaptive for chronic pain). The lowest possible score was 0 (full chronic pain acceptance) and the highest possible score was 48 (no chronic pain acceptance).
Time frame: Day 1 and Day 64
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Group | Value (MEAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Chronic Pain Acceptance | Pre capsule administration (Day 1) | 28.4 score on a scale |
| Open Label Dosing Arm (15mg and 25mg) | Chronic Pain Acceptance | Post capsule administration (Day 64) | 30.4 score on a scale |
Secondary
Chronic Pain Intensity Between Groups in the Study Period
Aggregated worst pain intensity scale from 0 (no pain) to 10 (highest pain possible) during 7-day epochs from day 1 through day 64. Participants' scores from Days 1-7 and Days 57-63 were compared.
Time frame: Days 1-7 & Days 57-63
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Group | Value (MEAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Chronic Pain Intensity Between Groups in the Study Period | Days 1-7 | 4.9 score on a scale |
| Open Label Dosing Arm (15mg and 25mg) | Chronic Pain Intensity Between Groups in the Study Period | Days 57-63 | 2.5 score on a scale |
Secondary
Patient Global Impression of Change (PGI-C)
The PGI-C was a questionnaire that gauged the participant's response to medical interventions using a 7-point Likert scale ranging from 1 to 7 with 1 being very much improved and 7 being very much worse.
Time frame: Day 64
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Patient Global Impression of Change (PGI-C) | 2 Score on a scale |
Secondary
Sleep Disturbance
Sleep disturbance included assessment of sleep quality, perceived ability to fall and stay asleep, satisfaction of sleep, and depth of sleep. Sleep disturbance was measured using the Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep Disturbance Short Form 8b. The raw scores were converted to standardized T-scores, with 50 as the population mean with a standard deviation of 10, and higher scores indicating worse sleep disturbance.
Time frame: Day 1 and Day 64
Population: Results reflect the participants who completed the trial.
| Arm | Measure | Group | Value (MEAN) |
|---|---|---|---|
| Open Label Dosing Arm (15mg and 25mg) | Sleep Disturbance | Pre capsule administration (Day 1) | 58.2 t-score |
| Open Label Dosing Arm (15mg and 25mg) | Sleep Disturbance | Post capsule administration (Day 64) | 51.1 t-score |