MastalgiaPhase 3NCT06966245
External Mastalgia-oil Versus Placebo in Premenopausal Women With Severe Mastalgia
A Phase 3 study testing mastalgia-oil in people with Mastalgia, run by Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University at 1 site in China.
Trial summary
This is a single-center, double-blind, randomized clinical trial to explore the efficacy and safety of external mastalgia-oil versus placebo in premenopausal women with severe mastalgia. Read more about this study
- Who is it for?
- Ages 18 to 60 years, women only
- Conditions the study is for
- Mastalgia
- What is being tested?
- mastalgia-oil
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 190 participants
- Where
- 1 siteChina
- Study dates
- 8 Jun 2025to 1 Dec 2027
- Phase
- Phase 3
- Are there results?
- Not yet: the study is under way
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 60 years
- Women only
- No healthy volunteers
- Adult
Who may be able to join
- Premenopausal females aged ≥ 18 years old
- Pre-existing regular menstrual cycle (28 ± 5 days) with mastalgia lasting for at least 6 consecutive menstrual cycles; with severe mastalgia [visual analog scale (VAS) score ≥ 4 for at least 7 days] and without chest wall pain in the baseline menstrual cycle (nonmedicated menstrual cycle)
- With breast ultrasound: BI-RADS classification 1-3; if mammography is required: also BI-RADS classification 1-3
- Willingness to follow up and complete required tests; ability to complete questionnaires independently or with assistance
- Willingness to use effective contraception (vaginally administered estrogen and hormone-coated IUDs are permitted) prior to study entry, during study participation, and for three months after discontinuation of the drug; negative pregnancy test in females of childbearing potential
- Requisite laboratory values:white blood cell count: ≥ 4.0 × 10^9/L, absolute neutrophil count: ≥ 2 × 10^9/L, platelet count: ≥ 100 × 10^9/L; hemoglobin: ≥ 110 g/L; aspartate aminotransferase and alanine aminotransferase: ≤ upper limit of normal, alkaline phosphatase: ≤ upper limit of normal, blood total bilirubin: ≤ upper limit of normal; serum creatinine and blood urea nitrogen: ≤ upper limit of normal
Who cannot join
- With suspected breast disease (e.g., mastitis, malignant breast tumor) other than breast pain or benign breast cysts, or with other malignant tumors
- Use of hormonal medications (e.g., oral contraceptives, glucocorticoids, etc.), sex hormone modulators (SERMS, AIs, SERDs, etc.), B vitamins, essential oils, nonsteroidal anti-inflammatory drugs, or higher pain relievers in the past 3 months; use of tamoxifen or analogs in the past 6 months
- Prior history of breast surgery (including minimally invasive surgery), history of malignancy, or history of thromboembolism within the last 5 years (history of varicose veins and superficial phlebitis allowed)
- Smokers; essential oils or placebo systemic/skin sensitization
- With serious primary diseases of the heart, liver, kidneys and hematopoietic system, or mental illness, etc.
- Accompanied by skin damage on the breast that destroys the stratum corneum (e.g., eczema, ulcers)
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- Serious or uncontrolled infections that may interfere with study treatment or assessment of study results, including but not limited to active hepatitis viral infection, human immunodeficiency virus antibody positivity, syphilis spirochete antibody positivity with evidence of active infection, and pulmonary infections
- Subjects who are breastfeeding or pregnant at the time of screening (of childbearing age and with serum human chorionic gonadotropin test results higher than the reference value); subjects of childbearing age who have had unprotected sex with a heterosexual partner within 2 weeks prior to the screening; subjects of childbearing age who are planning to prepare for conception, become pregnant, breastfeed, or donate their eggs during the test period or within 3 months of the end of the test; and those with implanted breasts
- Decrease in total breast pain score by more than 25% during the placebo lead-in cycle. These patients will not receive subsequent randomization and treatment.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
China1 site, 1 recruiting
- Recruiting
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Guangzhou
Chang Gong, Prof, 02034070499, gchang@mail.sysu.edu.cn
About this study
Official title: External Mastalgia-oil Versus Placebo in Premenopausal Women With Severe Mastalgia: a Double-blind, Randomized Clinical Trial
This is a single-center, double-blind, randomized clinical trial to explore the efficacy and safety of external mastalgia-oil versus placebo in premenopausal women with severe mastalgia.
- Conditions
- Mastalgia
- Being tested
- mastalgia-oil, Mastalgia-oil placebo
- Medical subject headings
- Mastodynia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
mastalgia-oilDrug
External mastalgia-oil 1 ml/d per breast for 3 consecutive menstrual cycles
Mastalgia-oil placeboDrug
External mastalgia-oil placebo 1 ml/d per breast for 3 consecutive menstrual cycles
| Study group | Role | What they receive |
|---|---|---|
| External mastalgia-oil | Experimental | Not described Receives: Drug: mastalgia-oil |
| Mastalgia-oil placebo | Placebo comparator | Not described Receives: Drug: Mastalgia-oil placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mastalgia clinical response rate
The recruited patients with mastalgia will be asked to record their symptoms of breast pain using a daily VAS breast pain chart, and the sum of the daily VAS within a menstrual cycle is considered the breast pain score (BPS). Effective rate (%)= [BPS (P) - BPS (T3)]/BPS (P)*100%, where BPS (P) indicates BPS of the placebo lead-in cycle and BPS (T3) indicates BPS at the end of the third treatment cycle. An effective rate of ≥50% is considered a clinical response.
Measured: Within 4 weeks after the end of the third treatment menstrual cycle
Secondary outcomes (5)
Subgroup mastalgia clinical response rate
Mastalgia clinical response rate in women with cyclical mastalgia; Mastalgia clinical response rate in women with non-cyclical mastalgia
Measured: Within 4 weeks after the end of the third treatment menstrual cycle
Breast nodularity
Breast nodularity will be assessed according to the Lucknow-Cardiff breast nodularity scale.The above breast nodularity scale is a 5-point ordinal scale depicting increasing order of nodularity in upper outer quadrants of the breasts. Grade-0 depicts a smooth textured breast with extreme extent of normalcy and grade-4 the maximum nodularity.
Measured: Within 7 days before the first treatment and the end of each treatment menstrual cycle
Pharmacokinetics of mastodynia-oil
Collection of blood samples for pharmacokinetic trough concentration-effect analysis of mastodynia-oil
Measured: Within 4 weeks after the end of the third treatment menstrual cycle
Changes in blood metabolites
Comparison of changes in blood metabolites before and after treatment and their correlation with primary endpoints using metabolomics.
Measured: Within 4 weeks after the end of the third treatment menstrual cycle
Safety (AEs+SAEs)
Safety will be assessed according to the National Cancer Institute Common Terminology Criteria for Adverse Events (version 5.0).
Measured: From signing the informed consent form until 28 days after completion of treatment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 May 2025
- Study start8 Jun 2025
- Primary completion1 Jun 2027 (estimated)
- Study completion1 Dec 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for MastalgiaStudies of the same condition, open and under way.
- More trials run by Sun Yat-Sen Memorial Hospital of Sun Yat-Sen UniversityThe 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
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 190 participants (estimated)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Chang Gong, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06966245
- Sponsor's protocol ID
- Relief
- Status last verified
- Jan 2026
- First submitted
- 2 May 2025
- Last updated
- 2 Feb 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Kumar S, Rai R, Das V, Kumar S, Dwivedi V, Agrawal GG. Visual analogue scale for assessing breast nodularity in non-discrete lumpy breasts: the Lucknow-Cardiff breast nodularity scale. Breast. 2010 Jun;19(3):238-42. doi: 10.1016/j.breast.2010.02.002. Epub 2010 Mar 11.
PubMed 20223665
Study at a glance
From the registry record, last updated by the sponsor on 2 Feb 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- External Mastalgia-oil Versus Placebo in Premenopausal Women With Severe Mastalgia: a Double-blind, Randomized Clinical Trial
- ClinicalTrials.gov ID
- NCT06966245
- Acronym / sponsor ID
- Relief
- Conditions
- Mastalgia
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 190 participants (estimated)
- Lead sponsor
- Sun Yat-Sen Memorial Hospital of Sun Yat-Sen UniversityUniversity, hospital or other
- Study start
- 8 Jun 2025 (actual)
- Primary completion
- 1 Jun 2027 (estimated)
- Study completion
- 1 Dec 2027 (estimated)
- First posted
- 11 May 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a single-center, double-blind, randomized clinical trial to explore the efficacy and safety of external mastalgia-oil versus placebo in premenopausal women with severe mastalgia.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| External mastalgia-oil | Experimental | Drug: mastalgia-oil |
| Mastalgia-oil placebo | Placebo comparator | Drug: Mastalgia-oil placebo |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- Premenopausal females aged ≥ 18 years old
- Pre-existing regular menstrual cycle (28 ± 5 days) with mastalgia lasting for at least 6 consecutive menstrual cycles; with severe mastalgia [visual analog scale (VAS) score ≥ 4 for at least 7 days] and without chest wall pain in the baseline menstrual cycle (nonmedicated menstrual cycle)
- With breast ultrasound: BI-RADS classification 1-3; if mammography is required: also BI-RADS classification 1-3
- Willingness to follow up and complete required tests; ability to complete questionnaires independently or with assistance
- Willingness to use effective contraception (vaginally administered estrogen and hormone-coated IUDs are permitted) prior to study entry, during study participation, and for three months after discontinuation of the drug; negative pregnancy test in females of childbearing potential
Key exclusion criteria (9 listed)
- With suspected breast disease (e.g., mastitis, malignant breast tumor) other than breast pain or benign breast cysts, or with other malignant tumors
- Use of hormonal medications (e.g., oral contraceptives, glucocorticoids, etc.), sex hormone modulators (SERMS, AIs, SERDs, etc.), B vitamins, essential oils, nonsteroidal anti-inflammatory drugs, or higher pain relievers in the past 3 months; use of tamoxifen or analogs in the past 6 months
- Prior history of breast surgery (including minimally invasive surgery), history of malignancy, or history of thromboembolism within the last 5 years (history of varicose veins and superficial phlebitis allowed)
- Smokers; essential oils or placebo systemic/skin sensitization
- With serious primary diseases of the heart, liver, kidneys and hematopoietic system, or mental illness, etc.
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 |
|---|---|---|
| mastalgia-oilExternal mastalgia-oil 1 ml/d per breast for 3 consecutive menstrual cycles | Drug | External mastalgia-oil |
| Mastalgia-oil placeboExternal mastalgia-oil placebo 1 ml/d per breast for 3 consecutive menstrual cycles | Drug | Mastalgia-oil placebo |
Primary outcome
Mastalgia clinical response rate
Time frame: Within 4 weeks after the end of the third treatment menstrual cycle
The recruited patients with mastalgia will be asked to record their symptoms of breast pain using a daily VAS breast pain chart, and the sum of the daily VAS within a menstrual cycle is considered the breast pain score (BPS). Effective rate (%)= [BPS (P) - BPS (T3)]/BPS (P)*100%, where BPS (P) indicates BPS of the placebo lead-in cycle and BPS (T3) indicates BPS at the end of the third treatment cycle. An effective rate of ≥50% is considered a clinical response.
5 secondary outcomes
Subgroup mastalgia clinical response rate
Time frame: Within 4 weeks after the end of the third treatment menstrual cycle
Breast nodularity
Time frame: Within 7 days before the first treatment and the end of each treatment menstrual cycle
Pharmacokinetics of mastodynia-oil
Time frame: Within 4 weeks after the end of the third treatment menstrual cycle
Changes in blood metabolites
Time frame: Within 4 weeks after the end of the third treatment menstrual cycle
Safety (AEs+SAEs)
Time frame: From signing the informed consent form until 28 days after completion of treatment
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Feb 2026.
- Background: PubMed 20223665Kumar S, Rai R, Das V, Kumar S, Dwivedi V, Agrawal GG. Visual analogue scale for assessing breast nodularity in non-discrete lumpy breasts: the Lucknow-Cardiff breast nodularity scale. Breast. 2010 Jun;19(3):238-42. doi: 10.1016/j.breast.2010.02.002. Epub 2010 Mar 11.
- 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.
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 mastalgia-oil in people with Mastalgia, run by Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University at 1 site in China.
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 9 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: looking for participants now, as of the sponsor's last update on 2 Feb 2026. 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 China. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Chang Gong, Prof (02034070499, gchang@mail.sysu.edu.cn), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mastalgia clinical response rate (time frame: Within 4 weeks after the end of the third treatment menstrual cycle). 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 NCT06966245, which also lists 1 linked publication.
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 2 Feb 2026.