Study of the Efficacy of Dienogest in the Treatment of Uterine Leiomyomas When Compared to Desogestrel and Goserelin

Study of the Efficacy of Dienogest in the Treatment of Uterine Leiomyomas When Compared to Desogestrel and Goserelin

Abnormal Uterine Bleeding in Women With Uterine Leiomyomas: Open Randomized Clinical Trial Of Non Inferiority Between Oral Dienogest, Oral Desogestrel and Subcutaneous Goserelin

The investigators´aim is to assess whether the progestagen dienogest reduces leiomyoma volume and its associated symptoms to the same extent as gonadotropin releasing hormone (GnRH) analogs or the progestagen desogestrel or whether it is inferior to other drugs already in use.

Uterine leiomyoma is a very prevalent condition among women and, although it is mainly asymptomatic, it may be related to bothersome or debilitating symptoms, such as uterine bleeding and pelvic pain or pressure. The standard treatment is surgical (hysterectomy or myomectomy), but there has been continued interest on medical treatments. Progestagens have long been used to control bleeding associated to leiomyomas, but they have not been able to decrease myoma volume. GnRH analogs are well stablished agents, capable of controlling symptoms and decreasing the tumors´volume, but their use is limited by bone loss and menopausal symptoms. A newly introduced progestagen, dienogest, has been studied to treat endometriosis, but its effects on leiomyoma are only starting to be assessed. The investigators are aiming to compare dienogest with the GnRH analog goserelin and the progestagen desogestrel in a randomized trial to see how this new treatment compares with previously used drugs and whether it is similar, inferior or superior to them on controlling leiomyoma associated symptoms and decreasing leiomyoma volume.

Inclusion Criteria: Women with 35 - 55 years of age Uterine volume between 50cc and 500cc Abnormal uterine bleeding probably associated to intramural uterine leiomyomas Exclusion Criteria: Pregnancy Liver or kidney dysfunction Women with only submucosal or subserosal uterine leiomyomas Women with contraindications to any of the drugs (categories 3 and 4 of WHO eligibility criteria) Use of anticoagulants Others causes of abnormal uterine bleeding (endometrial pathology, cervical pathology)