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A study of FSN-013 in Japanese patients with endometriosis

A Multi-center, Randomized, Double-Blind, Placebo-Controlled, Parallel-group design study to evaluate the efficacy and safety after cyclic dose of FSN-013 (E4/DRSP) in Japanese patients with Endometriosis

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031250241
Enrollment
173
Registered
2025-07-17
Start date
2025-08-21
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

endometriosis

Interventions

Sponsors

Takayanagi Toshiaki
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1.Diagnosed as endometriosis by laparotomy or laparoscopy 2.Diagnosed as endometriosis (having ovarian chocolate cysts) by TVUS or MRI 3.Patients clinically diagnosed as endometriosis with any of Douglas fossa induration or limited uterine mobility or pelvic tenderness by vaginal or rectal examination 4.Aged >= 20 years at the time of informed consent 5.BMI < 30 kg/m2

Exclusion criteria

Exclusion criteria: 1.Unconfirmed diagnosis of abnormal vaginal bleeding within 6 months before the screening tests 2.Aged >= 40 years with ovarian chocolate cysts for which the largest diameter was > 10 cm 3.Ovarian chocolate cysts containing solid components 4.Had undergone surgical treatment for endometriosis, adenomyosis and uterine fibroids by cyst puncture (such as transvaginal alcohol fixation), laparotomy or laparoscopy within 2 months before screening

Design outcomes

Primary

MeasureTime frame
The amount of change in the most severe pelvic pain (lower abdominal pain / back pain)

Secondary

MeasureTime frame
Percentage of subjects with clinically significant changes (calculation item) 1.Severest pelvic pain (lower abdominal pain / back pain) 2.Percentage of subjects for whom treatment is effective (calculation item) 3.Pelvic pain (lower abdominal pain / back pain) during menstruation or withdrawal bleeding 4.Pelvic pain (lower abdominal pain / back pain) except during menstruation or withdrawal bleeding 5.Coital pain 6.Defecation pain 7.Pelvic pain (lower abdominal pain / back pain) except coital pain and defecation pain 8.Pelvic pain (lower abdominal pain / back pain) that always felt and long lasting 9.Pelvic pain (lower abdominal pain / back pain) that develops suddenly and disappears in a short period of time 10.Average pain (calculation item) 11.Number of days in pain (calculation item) 12.Dysmenorrhea score 13.Concretion of Douglas' pouch 14.Limitation of uterine mobility 15.Pelvis tenderness 16.Number and size of chocolate cyst 17.Uterine size 18.Serum CA125 concentration 19.Serum IGF-1 concentration 20.Serum E2 concentration 21.Serum Progesterone concentration 22.Serum FSH concentration 23.Serum LH concentration 24.Serum Prolactin concentration 25.Endometrial thickness 26.Use of analgesics 27.Obstacles to daily activities 28.Obstacles to sleeping 29.PSQI 30.Obstacles to labor productivity 31.Clinical general improvement 32.Clinical general satisfaction 33.MRI evaluation of endometriosis 34.MRI evaluation of other associated lesions

Contacts

Public ContactToshiaki Takayanagi

Fuji Pharma Co., Ltd.

clinical_trials@fujipharma.jp+81-80-4807-8846

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026