EndometriosisPhase 3NCT04527003
Cannabidiol and Management of Endometriosis Pain
A Phase 3 study testing Cannabidiol (CBD) Extract and Norethindrone Acetate in people with Endometriosis and CBD, run by Milton S. Hershey Medical Center at 1 site in United States.
Trial summary
The investigators are looking to conduct a study looking at the effects of cannabidiol (CBD) in patients with endometriosis. It is believed that CBD will improve both pain and quality of life. The study will last a total of 12 weeks and involve several onsite visits in addition to daily pain assessments. Read more about this study
- Who is it for?
- Ages 18 to 45 years, women only
- Conditions the study is for
- Endometriosis, CBD, Pelvic Pain
- What is being tested?
- Cannabidiol (CBD) Extract and Norethindrone Acetate
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 12 participants
- Where
- 1 siteUnited States
- Study dates
- 4 Dec 2020to 26 Jun 2024
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 45 years
- Women only
- No healthy volunteers
- Adult
Who may be able to join
- Females ages 18-45 years at the time of enrollment
- A surgical diagnosis with direct visualization and/or histopathologic confirmation of endometriosis with associated moderate to severe endometriosis related pain ( > 3 on a VAS)
- Is not expected to undergo gynecological surgery or other surgical procedure for treatment of endometriosis during the study period
- Agrees to use approved contraception during the entire study if not surgically sterile
- Patients using oral contraceptives, vaginal ring, injectable progesterone and/or GnRH agonists/antagonist for contraception and/or management of endometriosis, can be included if both they and their primary provider agree to stopping their medication and transitioning to Norethindrone acetate (NETA) as the primary treatment of endometriosis throughout the study period.
- Patients using Long-acting reversible contraceptives (LARCs) for contraception and/or management of endometriosis can be included if both they and their primary provider agree to initiate Norethindrone (NETA) as the primary treatment of endometriosis throughout the study period
Who cannot join
- Women that are pregnant, breastfeeding or trying to conceive
- Women with chronic daily opioid use and any chronic pain or frequently reoccurring pain condition, other than endometriosis, that is treated with opioids for > 14 days per month.
- Women that are currently using Cannabis based products or have used them within 30 days of enrollment
- Non-English speaking or inability to read and understand English
- Women with a BMI > 35 kg/m2
- Women with known liver disease, such as hepatitis, or with screening LFTS (AST/ALT) > 3 times above the upper limits of normal (ULN) in the past year
Show all 15Show fewer
- Women with chronic alcohol use (defined as > 3 drinks per day, averaged over one week)
- Women with chronic use of drugs (defined as > 10 days/month) that cause somnolence/sedation such as benzodiazepines or Central Nervous System (CNS) depressants that are unwilling or unable to discontinue the medications for the washout period and the duration of the study
- Women who are currently taking Clobazam or Valproate and are unwilling/unable to discontinue the medication for the washout period and the duration of the study
- Women with suicidal ideation or uncontrolled depression within the past year
- Known history of or suspected breast cancer on screening physical exam
- History of or active deep venous thrombosis or pulmonary embolism
- History of or active arterial thromboembolic event (e.g. stroke, myocardial infarction)
- Multiple (> 3) risk factors for arterial vascular disease (e.g. uncontrolled hypertension, diabetes mellitus, hypercholesterolemia, obesity and smoking)
- Current use of a progestin-containing contraceptive implant
Trial locations and contacts
1 site in 1 country.
United States1 site
Penn State Health Milton S. Hershey Medical Center
Hershey, Pennsylvania, 17033
About this study
Official title: A Randomized Controlled Pilot Study of the Use of Cannabidiol in the Management of Endometriosis Pain
The investigators are looking to conduct a study looking at the effects of cannabidiol (CBD) in patients with endometriosis. It is believed that CBD will improve both pain and quality of life. The study will last a total of 12 weeks and involve several onsite visits in addition to daily pain assessments.
Read the detailed description
The proposal is to conduct a randomized double-blind placebo-controlled pilot study to evaluate the effectiveness of cannabidiol on the management of endometriosis-related pain.
Subjects will be pre-screened from new and existing patients as well as from referral sites for the diagnosis of endometriosis. Potential subjects will be pre-screened for moderate to severe endometriosis associated pain (VAS > 3) greater than 6 months. Those meeting all inclusion and exclusion criteria that who are willing to participate will receive a detailed history and physical exam, appropriate bloodwork and undergo informed consented at the Screening Visit. Baseline survey data will be collected. During Screening, the patient's will be asked to complete their daily electronic diaries and screened for daily reporting adherence.
Randomized subjects will receive either (1) placebo (2) low dose CBD (3) high dose CBD. This study will include an 8-week intervention period during which subjects will be asked to record daily electronic VAS scores, pain medication use and a number of other parameters. Subjects will return at week 12 for a 4 week post-treatment visit, where they can also chose to enroll in an optional pharmacokinetic study. Participants will complete the Endometriosis Health Profile-30 (EHP-30), Patient Global Assessments (PGAs), the Patient Global Impression of Change (PGIC) surveys and, if partnered and sexually active, the Female Sexual Function Index at various time points. Patients will also have bloodwork done to assess for circulating markers of inflammation, circulating CBD concentration levels and liver dysfunction throughout the study duration. Subjects will be screened for side effects and asked to record pain medication use throughout the duration of the study. Study drug compliance will be assessed.
At the completion of the study, all subjects will be offered the opportunity to do pharmacokinetic testing with sublingual CBD until a maximum number of 4 patients are enrolled. The testing will include 24 hours of monitoring with sequential blood draws to determine the pharmacokinetic parameters of sublingual CBD after administration and one salivary pH. They will be discharged at 24 hours and asked to return to the clinic at 48 hours for one final lab draw.
- Conditions
- Endometriosis, CBD, Pelvic Pain
- Being tested
- Cannabidiol (CBD) Extract, Norethindrone Acetate, Placebo
- Keywords
- endometriosis, CBD, pelvic pain
- Medical subject headings
- Endometriosis, Pelvic Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Cannabidiol (CBD) ExtractDrug
Cannabis is a well-known plant that contains more than 500 identified phytochemicals of which over 100 are cannabinoids. The most widely studied is 9-tetrahydrocannabinol (9-THC), which is the major psychoactive component of Cannabis, but Cannabidiol (CBD) has been increasingly favored for its reduced side effect profile and potential health benefits. CBD was first isolated from Cannabis in the 1940s. CBD, unlike 9-THC, does not bind to CB1 and CB2 receptors, which accounts for its lack of typical psychotropic effects, but is still appears to work via alternative mechanisms via the endocannabinoid system.
Norethindrone AcetateDrug
Norethindrone is a form of progesterone, a female hormone important for regulating ovulation and menstruation.
PlaceboOther
a substance or treatment which is designed to have no therapeutic value
| Study group | Role | What they receive |
|---|---|---|
| Group A - Placebo | Placebo comparator | Norethindrone acetate (5mg daily) + Placebo Receives: Drug: Norethindrone Acetate; Other: Placebo |
| Group B - Low Dose CBD | Active comparator | Norethindrone acetate (5mg daily) + Low dose CBD (10mg sublingual daily) Receives: Drug: Cannabidiol (CBD) Extract; Drug: Norethindrone Acetate |
| Group C - High Dose CBD | Active comparator | Norethindrone acetate (5mg daily) + High dose CBD (20mg sublingual daily) Receives: Drug: Cannabidiol (CBD) Extract; Drug: Norethindrone Acetate |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pain Score Area Under the Curve (AUC)
Pain will be self-reported daily using the Visual Analog Scale, a 100mm horizontal line on which the patient's pain intensity is represented by a point between the extremities of 0 (no pain) and 100 (worst pain). Although the daily collection is based on the 0-100 point scale, the primary study endpoint is calculated as the area under the curve per patient using the trapezoidal rule, with an AUC range per patient of 0-5600 over 8 weeks.
Measured: 8 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Aug 2020
- Study start4 Dec 2020
- Primary completion29 May 2024
- Study completion26 Jun 2024
Why it stopped: Recruitment has been challenging due to the BMI cutoff, need to take oral progesterone and abstain from cannabis products prior to the study.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (17)Papers the sponsor has linked to this study.
- Other trials for EndometriosisStudies of the same condition, open and under way.
- More trials run by Milton S. Hershey Medical CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 12 participants (actual)
Sponsor and investigators
- Lead sponsor
- Milton S. Hershey Medical Center
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Kristin Riley, MD, Penn State Health Milton S Hershey Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04527003
- Sponsor's protocol ID
- STUDY00013752
- Status last verified
- Apr 2025
- First submitted
- 21 Aug 2020
- Last updated
- 4 Apr 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Burney RO, Giudice LC. Pathogenesis and pathophysiology of endometriosis. Fertil Steril. 2012 Sep;98(3):511-9. doi: 10.1016/j.fertnstert.2012.06.029. Epub 2012 Jul 20.
PubMed 22819144Giudice LC, Kao LC. Endometriosis. Lancet. 2004 Nov 13-19;364(9447):1789-99. doi: 10.1016/S0140-6736(04)17403-5.
PubMed 15541453Behera M, Vilos GA, Hollett-Caines J, Abu-Rafea B, Ahmad R. Laparoscopic findings, histopathologic evaluation, and clinical outcomes in women with chronic pelvic pain after hysterectomy and bilateral salpingo-oophorectomy. J Minim Invasive Gynecol. 2006 Sep-Oct;13(5):431-5. doi: 10.1016/j.jmig.2006.05.007.
PubMed 16962527Rafique S, Decherney AH. Medical Management of Endometriosis. Clin Obstet Gynecol. 2017 Sep;60(3):485-496. doi: 10.1097/GRF.0000000000000292.
PubMed 28590310Lamvu G, Soliman AM, Manthena SR, Gordon K, Knight J, Taylor HS. Patterns of Prescription Opioid Use in Women With Endometriosis: Evaluating Prolonged Use, Daily Dose, and Concomitant Use With Benzodiazepines. Obstet Gynecol. 2019 Jun;133(6):1120-1130. doi: 10.1097/AOG.0000000000003267.
PubMed 31135725Fasinu PS, Phillips S, ElSohly MA, Walker LA. Current Status and Prospects for Cannabidiol Preparations as New Therapeutic Agents. Pharmacotherapy. 2016 Jul;36(7):781-96. doi: 10.1002/phar.1780.
PubMed 27285147Hermanson DJ, Marnett LJ. Cannabinoids, endocannabinoids, and cancer. Cancer Metastasis Rev. 2011 Dec;30(3-4):599-612. doi: 10.1007/s10555-011-9318-8.
PubMed 22038019Bouaziz J, Bar On A, Seidman DS, Soriano D. The Clinical Significance of Endocannabinoids in Endometriosis Pain Management. Cannabis Cannabinoid Res. 2017 Apr 1;2(1):72-80. doi: 10.1089/can.2016.0035. eCollection 2017.
PubMed 28861506Brawn J, Morotti M, Zondervan KT, Becker CM, Vincent K. Central changes associated with chronic pelvic pain and endometriosis. Hum Reprod Update. 2014 Sep-Oct;20(5):737-47. doi: 10.1093/humupd/dmu025. Epub 2014 Jun 11.
PubMed 24920437Rocha MG, e Silva JC, Ribeiro da Silva A, Candido Dos Reis FJ, Nogueira AA, Poli-Neto OB. TRPV1 expression on peritoneal endometriosis foci is associated with chronic pelvic pain. Reprod Sci. 2011 Jun;18(6):511-5. doi: 10.1177/1933719110391279. Epub 2010 Dec 15.
PubMed 21160085Bohonyi N, Pohoczky K, Szalontai B, Perkecz A, Kovacs K, Kajtar B, Orban L, Varga T, Szegedi S, Bodis J, Helyes Z, Koppan M. Local upregulation of transient receptor potential ankyrin 1 and transient receptor potential vanilloid 1 ion channels in rectosigmoid deep infiltrating endometriosis. Mol Pain. 2017 Jan-Dec;13:1744806917705564. doi: 10.1177/1744806917705564.
PubMed 28478727Sanchez AM, Vigano P, Mugione A, Panina-Bordignon P, Candiani M. The molecular connections between the cannabinoid system and endometriosis. Mol Hum Reprod. 2012 Dec;18(12):563-71. doi: 10.1093/molehr/gas037. Epub 2012 Aug 24.
PubMed 22923487Devinsky O, Verducci C, Thiele EA, Laux LC, Patel AD, Filloux F, Szaflarski JP, Wilfong A, Clark GD, Park YD, Seltzer LE, Bebin EM, Flamini R, Wechsler RT, Friedman D. Open-label use of highly purified CBD (Epidiolex(R)) in patients with CDKL5 deficiency disorder and Aicardi, Dup15q, and Doose syndromes. Epilepsy Behav. 2018 Sep;86:131-137. doi: 10.1016/j.yebeh.2018.05.013. Epub 2018 Jul 11.
PubMed 30006259Ewing LE, Skinner CM, Quick CM, Kennon-McGill S, McGill MR, Walker LA, ElSohly MA, Gurley BJ, Koturbash I. Hepatotoxicity of a Cannabidiol-Rich Cannabis Extract in the Mouse Model. Molecules. 2019 Apr 30;24(9):1694. doi: 10.3390/molecules24091694.
PubMed 31052254Millar SA, Stone NL, Yates AS, O'Sullivan SE. A Systematic Review on the Pharmacokinetics of Cannabidiol in Humans. Front Pharmacol. 2018 Nov 26;9:1365. doi: 10.3389/fphar.2018.01365. eCollection 2018.
PubMed 30534073
Study at a glance
From the registry record, last updated by the sponsor on 4 Apr 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Randomized Controlled Pilot Study of the Use of Cannabidiol in the Management of Endometriosis Pain
- ClinicalTrials.gov ID
- NCT04527003
- Acronym / sponsor ID
- STUDY00013752
- Conditions
- Endometriosis, CBD, Pelvic Pain
- Keywords
- endometriosis, CBD, pelvic pain
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Recruitment has been challenging due to the BMI cutoff, need to take oral progesterone and abstain from cannabis products prior to the study.
- Enrolment
- 12 participants (actual)
- Lead sponsor
- Milton S. Hershey Medical CenterUniversity, hospital or other
- Study start
- 4 Dec 2020 (actual)
- Primary completion
- 29 May 2024 (actual)
- Study completion
- 26 Jun 2024 (actual)
- First posted
- 26 Aug 2020 (actual)
- Results
- Posted 4 Apr 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The investigators are looking to conduct a study looking at the effects of cannabidiol (CBD) in patients with endometriosis. It is believed that CBD will improve both pain and quality of life. The study will last a total of 12 weeks and involve several onsite visits in addition to daily pain assessments.
Detailed description
The proposal is to conduct a randomized double-blind placebo-controlled pilot study to evaluate the effectiveness of cannabidiol on the management of endometriosis-related pain.
Subjects will be pre-screened from new and existing patients as well as from referral sites for the diagnosis of endometriosis. Potential subjects will be pre-screened for moderate to severe endometriosis associated pain (VAS > 3) greater than 6 months. Those meeting all inclusion and exclusion criteria that who are willing to participate will receive a detailed history and physical exam, appropriate bloodwork and undergo informed consented at the Screening Visit. Baseline survey data will be collected. During Screening, the patient's will be asked to complete their daily electronic diaries and screened for daily reporting adherence.
Randomized subjects will receive either (1) placebo (2) low dose CBD (3) high dose CBD. This study will include an 8-week intervention period during which subjects will be asked to record daily electronic VAS scores, pain medication use and a number of other parameters. Subjects will return at week 12 for a 4 week post-treatment visit, where they can also chose to enroll in an optional pharmacokinetic study. Participants will complete the Endometriosis Health Profile-30 (EHP-30), Patient Global Assessments (PGAs), the Patient Global Impression of Change (PGIC) surveys and, if partnered and sexually active, the Female Sexual Function Index at various time points. Patients will also have bloodwork done to assess for circulating markers of inflammation, circulating CBD concentration levels and liver dysfunction throughout the study duration. Subjects will be screened for side effects and asked to record pain medication use throughout the duration of the study. Study drug compliance will be assessed.
At the completion of the study, all subjects will be offered the opportunity to do pharmacokinetic testing with sublingual CBD until a maximum number of 4 patients are enrolled. The testing will include 24 hours of monitoring with sequential blood draws to determine the pharmacokinetic parameters of sublingual CBD after administration and one salivary pH. They will be discharged at 24 hours and asked to return to the clinic at 48 hours for one final lab draw.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Group A - Placebo | Placebo comparator | Drug: Norethindrone Acetate, Other: PlaceboNorethindrone acetate (5mg daily) + Placebo |
| Group B - Low Dose CBD | Active comparator | Drug: Cannabidiol (CBD) Extract, Drug: Norethindrone AcetateNorethindrone acetate (5mg daily) + Low dose CBD (10mg sublingual daily) |
| Group C - High Dose CBD | Active comparator | Drug: Cannabidiol (CBD) Extract, Drug: Norethindrone AcetateNorethindrone acetate (5mg daily) + High dose CBD (20mg sublingual daily) |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- Females ages 18-45 years at the time of enrollment
- A surgical diagnosis with direct visualization and/or histopathologic confirmation of endometriosis with associated moderate to severe endometriosis related pain ( > 3 on a VAS)
- Is not expected to undergo gynecological surgery or other surgical procedure for treatment of endometriosis during the study period
- Agrees to use approved contraception during the entire study if not surgically sterile
- Patients using oral contraceptives, vaginal ring, injectable progesterone and/or GnRH agonists/antagonist for contraception and/or management of endometriosis, can be included if both they and their primary provider agree to stopping their medication and transitioning to Norethindrone acetate (NETA) as the primary treatment of endometriosis throughout the study period.
Key exclusion criteria (15 listed)
- Women that are pregnant, breastfeeding or trying to conceive
- Women with chronic daily opioid use and any chronic pain or frequently reoccurring pain condition, other than endometriosis, that is treated with opioids for > 14 days per month.
- Women that are currently using Cannabis based products or have used them within 30 days of enrollment
- Non-English speaking or inability to read and understand English
- Women with a BMI > 35 kg/m2
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Cannabidiol (CBD) ExtractCannabis is a well-known plant that contains more than 500 identified phytochemicals of which over 100 are cannabinoids. The most widely studied is 9-tetrahydrocannabinol (9-THC), which is the major psychoactive component of Cannabis, but Cannabidiol (CBD) has been increasingly favored for its reduced side effect profile and potential health benefits. CBD was first isolated from Cannabis in the 1940s. CBD, unlike 9-THC, does not bind to CB1 and CB2 receptors, which accounts for its lack of typical psychotropic effects, but is still appears to work via alternative mechanisms via the endocannabinoid system. | Drug | Group B - Low Dose CBD, Group C - High Dose CBD |
| Norethindrone AcetateNorethindrone is a form of progesterone, a female hormone important for regulating ovulation and menstruation. | Drug | Group A - Placebo, Group B - Low Dose CBD, Group C - High Dose CBD |
| Placeboa substance or treatment which is designed to have no therapeutic value | Other | Group A - Placebo |
Primary outcome
Pain Score Area Under the Curve (AUC)
Time frame: 8 weeks
Pain will be self-reported daily using the Visual Analog Scale, a 100mm horizontal line on which the patient's pain intensity is represented by a point between the extremities of 0 (no pain) and 100 (worst pain). Although the daily collection is based on the 0-100 point scale, the primary study endpoint is calculated as the area under the curve per patient using the trapezoidal rule, with an AUC range per patient of 0-5600 over 8 weeks.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Apr 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 22819144Burney RO, Giudice LC. Pathogenesis and pathophysiology of endometriosis. Fertil Steril. 2012 Sep;98(3):511-9. doi: 10.1016/j.fertnstert.2012.06.029. Epub 2012 Jul 20.
- Background: PubMed 15541453Giudice LC, Kao LC. Endometriosis. Lancet. 2004 Nov 13-19;364(9447):1789-99. doi: 10.1016/S0140-6736(04)17403-5.
- Background: PubMed 16962527Behera M, Vilos GA, Hollett-Caines J, Abu-Rafea B, Ahmad R. Laparoscopic findings, histopathologic evaluation, and clinical outcomes in women with chronic pelvic pain after hysterectomy and bilateral salpingo-oophorectomy. J Minim Invasive Gynecol. 2006 Sep-Oct;13(5):431-5. doi: 10.1016/j.jmig.2006.05.007.
- Background: PubMed 28590310Rafique S, Decherney AH. Medical Management of Endometriosis. Clin Obstet Gynecol. 2017 Sep;60(3):485-496. doi: 10.1097/GRF.0000000000000292.
- Background: PubMed 31135725Lamvu G, Soliman AM, Manthena SR, Gordon K, Knight J, Taylor HS. Patterns of Prescription Opioid Use in Women With Endometriosis: Evaluating Prolonged Use, Daily Dose, and Concomitant Use With Benzodiazepines. Obstet Gynecol. 2019 Jun;133(6):1120-1130. doi: 10.1097/AOG.0000000000003267.
- Background: PubMed 27285147Fasinu PS, Phillips S, ElSohly MA, Walker LA. Current Status and Prospects for Cannabidiol Preparations as New Therapeutic Agents. Pharmacotherapy. 2016 Jul;36(7):781-96. doi: 10.1002/phar.1780.
- Background: PubMed 22038019Hermanson DJ, Marnett LJ. Cannabinoids, endocannabinoids, and cancer. Cancer Metastasis Rev. 2011 Dec;30(3-4):599-612. doi: 10.1007/s10555-011-9318-8.
- Background: PubMed 28861506Bouaziz J, Bar On A, Seidman DS, Soriano D. The Clinical Significance of Endocannabinoids in Endometriosis Pain Management. Cannabis Cannabinoid Res. 2017 Apr 1;2(1):72-80. doi: 10.1089/can.2016.0035. eCollection 2017.
- Background: PubMed 24920437Brawn J, Morotti M, Zondervan KT, Becker CM, Vincent K. Central changes associated with chronic pelvic pain and endometriosis. Hum Reprod Update. 2014 Sep-Oct;20(5):737-47. doi: 10.1093/humupd/dmu025. Epub 2014 Jun 11.
- Background: PubMed 21160085Rocha MG, e Silva JC, Ribeiro da Silva A, Candido Dos Reis FJ, Nogueira AA, Poli-Neto OB. TRPV1 expression on peritoneal endometriosis foci is associated with chronic pelvic pain. Reprod Sci. 2011 Jun;18(6):511-5. doi: 10.1177/1933719110391279. Epub 2010 Dec 15.
- Background: PubMed 28478727Bohonyi N, Pohoczky K, Szalontai B, Perkecz A, Kovacs K, Kajtar B, Orban L, Varga T, Szegedi S, Bodis J, Helyes Z, Koppan M. Local upregulation of transient receptor potential ankyrin 1 and transient receptor potential vanilloid 1 ion channels in rectosigmoid deep infiltrating endometriosis. Mol Pain. 2017 Jan-Dec;13:1744806917705564. doi: 10.1177/1744806917705564.
- Background: PubMed 22923487Sanchez AM, Vigano P, Mugione A, Panina-Bordignon P, Candiani M. The molecular connections between the cannabinoid system and endometriosis. Mol Hum Reprod. 2012 Dec;18(12):563-71. doi: 10.1093/molehr/gas037. Epub 2012 Aug 24.
- HIGHLIGHTS OF PRESCRIBING INFORMATION. EPIDIOLEX ® (cannabidi ol) oral solution, CX \[pending DEA scheduling action\] Initial U.S. Approval: XXXX \[pending controlled substance scheduling\]Link provided by the sponsor.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Cannabidiol (CBD) Extract and Norethindrone Acetate in people with Endometriosis and CBD, run by Milton S. Hershey Medical Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 4 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 4 Apr 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Pain Score Area Under the Curve (AUC) (time frame: 8 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04527003, which also lists 17 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Apr 2025.