GenSci048 for moderate to severe endometriosis pain
Official title: A Multicenter, Randomized, Double-blind, Placebo-controlled Phase IIa Clinical Study to Assess the Efficacy and Safety of GenSci048 in Patients With Moderate to Severe Endometriosis-Associated Pain
Run by Changchun GeneScience Pharmaceutical Co., Ltd. · NCT06963177 · Data updated 2026-11-12
This study will test if GenSci048 reduces moderate to severe endometriosis pain in premenopausal women.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 49 Years |
| Sex | Women only |
| Enrollment | 200 (estimated) |
| Sponsor | Changchun GeneScience Pharmaceutical Co., Ltd. Industry-sponsored |
| Locations | 1 site (Beijing, Beijing Municipality) |
| Status | Recruiting |
| Started | May 26, 2025 |
| Main results expected | May 15, 2028 |
| Study ends | January 6, 2030 |
| Registry record updated | August 12, 2025 |
| Trial ID | NCT06963177 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Premenopausal women aged 18–49 with a diagnosis of endometriosis within the past 10 years, regular menstrual cycles, and moderate to severe endometriosis-associated pain are the intended participants.
✕Probably not a fit
People who have had a hysterectomy or bilateral oophorectomy, cannot stop excluded medications, or do not meet the menstrual cycle criteria are unlikely to benefit from participating.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This Phase IIa, placebo-controlled interventional trial gives premenopausal women with moderate to severe endometriosis-associated pain either GenSci048 or a matching placebo to compare pain relief and safety. Eligible participants are aged 18–49, have a diagnosis of endometriosis within the past 10 years, regular natural menstrual cycles, and must agree to use only permitted analgesics and non-hormonal contraception during the study. The trial will track changes in pain and record adverse events to determine whether GenSci048 provides meaningful symptom improvement. Specific dosing schedules and treatment duration are set by the sponsor and monitored throughout the study.
Why it matters
Potential benefit: If successful, GenSci048 could reduce endometriosis-related pain and improve daily functioning for affected women.
How similar studies have gone: Previous small studies of new targeted agents for endometriosis pain have shown mixed results, so the approach has some precedent but remains experimental.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Pre-menopausal female participants, between 18 and 49 years of age, inclusive, at the time of signing informed consent. 2. Participants must have a diagnosis of endometriosis within 10 years before screening. 3. Have moderate to severe endometrial related pain. 4. Have at least one regular, natural menstrual cycles (ranging from 21 to 35 days (inclusive)) before and during the screening period. 5. Agree to switch from her usual analgesic medication to only that which is permitted in the study from the screening period to the end of treatment and agree to stop using other treatments for endometriosis. 6. Agree to use non-hormonal contraception from the time of signing the informed consent until 4 weeks after the last dose of the study medication. Exclusion Criteria: 1. Participants who have previously received hysterectomy and/or bilateral oophorectomy, or plan to undergo these procedures during the study period. 2. Participants who suffer from chronic pelvic and/or non-pelvic pain that is not caused by EM and require chronic analgesia or other chronic treatment, which is expected to affect the assessment of EAP. 3. Pelvic ultrasound screening indicating a need for surgery or suspicion of malignancy. 4. Participants with abnormal and undiagnosed vaginal and/or uterine bleeding within 3 months prior to screening. 5. Participants who plan to schedule elective surgery during the study; or those who have had a surgery within 4 months prior to screening and need ongoing pain management. 6. History of severe depression or post-traumatic stress disorder within the two years prior to screening, or history of any other severe mental disorder at any time. 7. History of drug or alcohol abuse within the six months prior to screening. 8. Participants who have participated in any other interventional clinical trial (including clinical trials of drugs and devices) within 1 month prior to screening. 9. Have used a prohibited long-acting anesthetic or immediate-release anesthetic for more than 2 consecutive weeks for the treatment of endometriosis associated pain in the 6 months prior to screening. 10. Participant is pregnant, breast feeding, or planning a pregnancy.
Where it's running
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Peking University First Hospital
Beijing, Beijing Municipality, China Recruiting
Study contacts
- Study coordinator: Jingsi Li
- Email: lijingsi@genscigroup.com
- Phone: +86 18301941524
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Evaluating physical therapy for endometriosis pain management
This study is testing if a mix of education about pain and specific exercises can help women with endometriosis feel less pain and improve their quality of life.
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Hyperbaric Oxygen Therapy for Pain from Endometriosis
This study is testing if Hyperbaric Oxygen Therapy can help women with endometriosis who have been in pain for a long time feel better while they wait for surgery.
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Comparing different techniques to treat endometriosis
This study is testing different methods to treat endometriosis, like laser and heat techniques, to see which one works best for relieving pain in women who are already having surgery for the condition.
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This study is testing if a special therapy can help women with prolapse and endometriosis-related pain by looking at how the jaw joint and pelvis are connected.
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Using a smartphone app to track pain and mood changes
This study is testing a smartphone app to track pain and mood changes in people with chronic pain and healthy individuals to see how these factors affect pain over time.
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This study is testing whether using electrical stimulation can help relieve chronic pain in people with endometriosis better than regular pain medications.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.