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NCT Number: NCT06477406

Evaluating the Impact of a Novel Cannabinoid Product for Endometriosis

Despite the proliferation of cannabis and cannabinoid products in recent years, little research has been done to determine the impact of these products on womens health conditions, including endometriosis. This study is designed to assess the impact of a custom-formulated, hemp-derived, full-spectrum, high-CBD product vs. placebo on clinical symptoms and biomarkers over the course of 12 weeks of treatment in patients with endometriosis. This project will provide information that does not currently exist on the potential efficacy of a cannabinoid-based sublingual product for endometriosis.

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Key information

Conditions

Endometriosis Female Urogenital Diseases Female Urogenital Diseases and Pregnancy Complications Genital Diseases Genital Diseases, Female Urogenital Diseases

Age range

21 year and older

Sex eligibility

Female

Study type

Interventional

Phase

Phase 2

Primary location

McLean Hospital

Belmont, Massachusetts, 02478, United States

Location status: Recruiting

Location contact

Rosie Smith, M.S.

CONTACT

[email protected]

617-855-2908

About this study

Despite recent increases in both medical and recreational cannabis use in the United States and globally, little research has been conducted to determine the potential applications for womens health. Endometriosis impacts approximately 10% of women of reproductive age, an estimated 176 million individuals, and is characterized by endometrial cells growing outside of the uterus, resulting in severe pain, chronic inflammation, gastrointestinal symptoms, infertility, and often, depression and anxiety (WHO, 2023). Existing treatment options are often limited in efficacy and may result in a variety of negative side effects. Previous research has indicated that cannabinoids including cannabidiol (CBD), delta-9 tetrahydrocannabinol (THC), and a number of other cannabinoids may hold potential for treating the symptoms of endometriosis, especially the chronic pain associated with the condition.

This study is a double-blind crossover clinical trial of a high-CBD product compared to placebo over a total of 12 weeks of treatment in patients with endometriosis. Participants will complete 7 visits over 12 weeks; 4 visits will be conducted in-person at McLean Hospital in Belmont, MA, and 3 visits will be conducted remotely. Visits consist of clinical ratings, assessments of conventional medication use, quality of life measures, and providing saliva, urine, and blood samples.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subject has provided informed consent
  • Sex assigned female at birth
  • Subject is 21 or older
  • Subject is fluent in English
  • Subject endorses at least moderate levels of pain at the baseline visit
  • Subject endorses having endometriosis

Exclusion criteria

  • Non-fluent English speakers
  • Endorsement of current substance use disorder, psychotic disorder, or an eating disorder
  • Currently uses cannabis or cannabinoid products regularly
  • Patients will be excluded if they have a positive urine pregnancy test, are trying to become pregnant, or are currently breastfeeding
  • Presence of a serious or unstable medical illness, including liver, kidney, or cardiovascular disease (hyper/hypotension, cardiac disorders), or neurological disorder (including seizure disorder)
  • Neuropathic pain or cancer-related pain
  • Disclosure of a genetic polymorphism affecting CYP2C9 function

Treatment and study plan

Cannabidiol

Drug

Custom formulation of a hemp-derived sublingual solution that is high in CBD and includes other cannabinoids and terpenes.

Placebo

Drug

An active placebo containing supplemental terpenes matched to the high-CBD product.

Primary outcomes

  1. Visual Analog Scale (VAS)

    Time frame: 12 weeks

    The VAS is a commonly used pain scale where patients draw a line to indicate their pain level on a 100 millimeter long line anchored by two verbal descriptors for symptom extremes (e.g. "no pain" to "worst imaginable pain"). The VAS will be used to describe different types of endometriosis-related pain (dysmenorrhea (pain during menstruation), dyspareunia (pain during or after intercourse), and non-menstrual chronic pelvic pain). Lower scores indicate less pain.

Secondary outcomes

  1. Endometriosis Health Profile (EHP-30)

    Time frame: 12 weeks

    The EHP-30 is a well-validated self-report scale with 30 core items and 23 additional questions related to specific modules and areas of life often impacted by endometriosis symptoms. Lower scores indicate fewer symptoms.

  2. VAS-IBS

    Time frame: 12 weeks

    The VAS-IBS queries bowel-related concerns. While initially developed for IBS patients, it is commonly used to assess gastrointestinal symptoms in endometriosis patients. Lower scores indicate fewer bowel symptoms.

  3. Beck Anxiety Inventory (BAI)

    Time frame: 12 weeks

    The BAI is a 21 item-self-report measure that can be used to screen for anxiety. Each item on the BAI is rated on a scale of 0 to 3, and is descriptive of subjective, somatic, or panic-related symptoms of anxiety. Lower scores indicate fewer symptoms of anxiety.

  4. Beck Depression Inventory (BDI)

    Time frame: 12 weeks

    The BDI is a 21 item-self-report measure that can be used to assess the severity of depression. Each item on the BDI relates to a symptom of depression and is rated by the subject using a 0-3 scale. Lower scores indicate fewer depressive symptoms.

  5. Conventional Medication Use

    Time frame: 12 weeks

    Changes in conventional medication use will be assessed over the course of treatment with study product.

  6. Inflammatory Biomarkers

    Time frame: 12 weeks

    Saliva samples will be used to quantify levels of common inflammatory markers (e.g. IL-1β, IL-6, IL-8, TNF-α). Lower levels of inflammatory markers indicate less systemic inflammation.

  7. Circulating Endocannabinoid Concentrations

    Time frame: 12 weeks

    Plasma will be analyzed for circulating levels of endocannabinoids and related compounds (e.g., AEA, 2-AG, 2-OG, PEA, OEA).

Study contacts

Contact information is provided by the study sponsor or research team.

Rosie Smith, M.S.

CONTACT

[email protected]

617-855-2908

Staci Gruber, PhD

CONTACT

[email protected]

617-855-2762

Sponsors and collaborators

Lead sponsor

Mclean Hospital

Other

Collaborators

  • Massachusetts Life Sciences Center

Registry information

Important dates

Study start
2024
Primary completion
2026
Study completion
2026
First posted
Jun 27, 2024
Registry last updated
Jul 21, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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