Trial Comparing Preoperative Dienogest Therapy Followed by Surgery vs. Upfront Surgery to Save Ovarian Reserve in Young Women With Ovarian Endometrioma (DOROSY)
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ClinicalTrials.gov Identifier: NCT02728245 |
Recruitment Status :
Withdrawn
(Placebo cannot be prepared)
First Posted : April 5, 2016
Last Update Posted : October 31, 2017
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Ovarian Reserve Endometriosis | Drug: Dienogest Drug: Placebo drug Procedure: Surgery | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 0 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Prevention |
Official Title: | Randomized Phase 2 Trial Comparing Preoperative Dienogest Therapy Followed by Surgery vs. Upfront Surgery to Save Ovarian Reserve in Young Women With Ovarian Endometrioma |
Estimated Study Start Date : | October 2017 |
Estimated Primary Completion Date : | March 2018 |
Estimated Study Completion Date : | March 2018 |

Arm | Intervention/treatment |
---|---|
Placebo Comparator: Control group
Placebo drug 1 tablet per day will be prescribed for 3months before surgery in ovarian endometrioma patients. Dienogest(DNG) 2mg 1 tablet per day will be prescribed for 2 months from 1month after surgery. |
Drug: Dienogest
Dienogest 2mg po qd Drug: Placebo drug Placebo 1 table po qd Procedure: Surgery conservative surgery without intent to oophorectomy |
Experimental: Case group
Dienogest(DNG) 2mg 1 tablet per day will be prescribed for 3months before surgery in ovarian endometrioma patients. Dienogest(DNG) 2mg 1 tablet per day will be prescribed for 2 months from 1month after surgery. |
Drug: Dienogest
Dienogest 2mg po qd Procedure: Surgery conservative surgery without intent to oophorectomy |
- Compare the mean change of serum Anti-Mullerian Hormone (AMH) level [ Time Frame: 3 month after surgery ]
- Compare the mean change of serum AMH level [ Time Frame: 1 month after surgery ]
- Compare the trend of mean change of serum AMH level [ Time Frame: 1 and 3 month after surgery ]
- Compare the mean change of serum AMH level [ Time Frame: baseline and after preoperative dienogest/placebo therapy for 3 months ]
- Compare the revised American fertility society (AFS) score [ Time Frame: At surgery ]
- compare the surgical time (minute) [ Time Frame: intraoperative ]surgical time (minute)
- Brief Pain Inventory (BPI) scores [ Time Frame: baseline, 1 month after surgery and 3 month after surgery ]
- number of participants with treatment-related adverse events as assessed by CTCAE v4.0 [ Time Frame: All adverse events from randomization to postoperative 3 months ]
- Mean change of diameter of endometrioma measured by ultrasonography after preoperative dienogest/placebo therapy for 3months [ Time Frame: baseline and after preoperative dienogest/placebo therapy for 3 months ]

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Ages Eligible for Study: | 20 Years to 45 Years (Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Unilateral ovarian endometrioma ≥ 5cm or bilateral ovarian endometriomas with any size diagnosed by ultrasonography.
- In Patients with previous unilateral salpingo-oophorectomy (USO)
- Unilateral ovarian endometrioma with any size is eligible
- 20 ≤ Age ≤ 45 and premenopause
- Plan to undergo conservative surgery for endometriomas
Exclusion Criteria:
- Pregnant women or women who were suspected to be pregnant
- Women with current venous thromboembolism or history of such diseases
- Women with current arterial disease or cardiovascular diseases (e.g. myocardial infarction, cerebrovascular diseases, or ischemic heart diseases) or history of such diseases
- Women with current diabetes with vascular lesions or history of such diseases
- Women with current severe liver diseases or history of severe liver diseases with abnormal liver function
- Women with current liver tumor or history of liver tumor
- Women with current or history of sex-hormone dependent malignant tumor or women who were suspected to have a sex-hormone dependent malignant tumor
- Women with vaginal bleeding of unknown causes
- Women with a history of allergic reaction to elements of DNG
- Women with galactose intolerance, Lapp lactase deficiency, glucose-galactose malabsorption
- Women whose non-compliance is expected
- Lactation (treatment with DNG is not recommended in lactating women due to possible excretion in breast milk)
- Any medication that could result in an excessive accumulation, impaired metabolism, or altered excretion of the study drug or might interfere with the conduct of the study or the interpretation of the results

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02728245
Korea, Republic of | |
Seoul National University Bundang Hospital | |
Seongnam Si, Gyeonggi Do, Korea, Republic of, 463707 |
Responsible Party: | Kidong Kim, Associate Professor, Seoul National University Hospital |
ClinicalTrials.gov Identifier: | NCT02728245 |
Other Study ID Numbers: |
SNUBH_GO_052 |
First Posted: | April 5, 2016 Key Record Dates |
Last Update Posted: | October 31, 2017 |
Last Verified: | October 2017 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Endometriosis Dienogest Contraceptive Agents, Male Contraceptive Agents Reproductive Control Agents Physiological Effects of Drugs |
Contraceptives, Oral Contraceptive Agents, Female Hormone Antagonists Hormones, Hormone Substitutes, and Hormone Antagonists Antineoplastic Agents, Hormonal Antineoplastic Agents |