Skip to content

Use of Dienogest in PPOS Protocol for Ovarian Stimulation in Patients with Ovarian Endometriosis

Use of Dienogest in PPOS Protocol for Ovarian Stimulation in Patients with Ovarian Endometriosis

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2500106228
Enrollment
Unknown
Registered
2025-07-21
Start date
2025-08-01
Completion date
Unknown
Last updated
2025-08-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

endometriosis

Interventions

Dienogest+PPOS group:1. Dinogest 2mg/day for 28 consecutive days
2. After 28 days, the level of basal hormones (FSH<10 IU/L, E2<50 pg/mL can be initiated). 3. Use letrozole 2.5-5mg/d, combined with HMG225-300IU/d, add dinogest 2mg MPA 4mg to stop MPA on trigger day
PPOS group:Treatment was initiated directly with letrozole 2.5–5 mg/day, HMG 225–300 IU/day, and MPA 4–8 mg/day, following the conventional PPOS protocol

Sponsors

West China Second University Hospital
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
20 Years to 40 Years

Inclusion criteria

Inclusion criteria: 1. Age 20-40 years old, planning assisted reproduction and no willingness to transfer fresh embryos (patients who plan to thaw and transfer fertility preservation, PGT or other factors); 2. Diagnosed ovarian endometriosis cyst with a diameter of >=3 cm.

Exclusion criteria

Exclusion criteria: 1. Receipt of other endocrine therapies (such as GnRH-a or contraceptive drugs) within the past 6 months; 2. Presence of other infertility factors (e.g., severe uterine conditions, amenorrhea for >=6 months); 3. Active inflammatory or thrombotic diseases; 4. Contraindications to dienogest (e.g., severe hepatic or renal dysfunction).

Design outcomes

Primary

MeasureTime frame
number of oocytes retrieved;

Secondary

MeasureTime frame
total gonadotropin dose;usable embryo rate;cyst diameter;Anti-Müllerian hormone levels;

Countries

China

Contacts

Public ContactHuang Wei

West China Second University Hospital of Sichuan

weihuang64@163.com+86 181 8060 9196

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026