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Evaluating the safety and efficacy of oocyte and embryo vitrification for fertility preservation

Evaluating the safety and efficacy of oocyte and embryo vitrification for fertility preservation - Evaluating the safety and efficacy of oocyte and embryo vitrification for fertility preservation

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000028909
Enrollment
500
Registered
2017-09-01
Start date
2017-09-01
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

Cancer, Hematologic disease, Immune disorders

Interventions

Patients undergo controlled ovarian stimulation and in vitro fertilization (IVF) for fertility preservation before or in the course of treatment for primary disease. Combined therapy: FSH/hMG in

Sponsors

Keio University
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1) Cancer, hematological disease, or immune disorders. 2) Physicians referral for fertility preservation. 3) The patients who are expected long-term survival. 4) The patients who have the ability to provide written informed consent.

Exclusion criteria

Exclusion criteria: 1. Freezing 1) The patients who cannot realize or obtain informed consent. 2) The patients judged to be inappropriate for the study by the physicians. 3) The case to delay treatments because of fertility preservation. 2. Fertilization, Embryo Transfer 1) Unmarried patients. 2) The patients who are more than 50 years old. 3) The patients undergoing hysterectomies. 4) The patients whose cancers, hematological diseases, or immune disorders have progressed at the time of embryo transfer.

Design outcomes

Primary

MeasureTime frame
Survival rate of oocytes and embryos after freezing and thawing

Secondary

MeasureTime frame
Total dose of gonadotropins, Oocytes retrieval number, Total number of mature oocytes, Fertilization rate, Blastocyst development rate, The ratio of embryos available for transfer per oocyte pick up, Implantation rate per embryo transfer, Liver birth rate per oocyte pick-up

Countries

Japan

Contacts

Public ContactMitsutoshi Yamada

Keio University School of Medicine Department of Obstetrics and Gynecology

mitutosi@keio.jp+81352633819

Outcome results

None listed

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