To clarify the safety and efficacy of oocyte cryopreservation for fertility preservation.

To clarify the safety and efficacy of oocyte cryopreservation for fertility preservation. - To clarify the safety and efficacy of oocyte cryopreservation for fertility preservation.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000034558

Enrollment

Registered

2018-10-19

Start date

2014-05-02

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 Collagen disease

Interventions

ovarian stimulation oocyte pick up

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1)Patients with a possibility of decreasing ovarian function due to chemotherapy or radiation therapy for cancer treatment. 2)Unmarried women. 3)Women aged >15 and <40 years. 4)Women who wish for a baby. 5)Women who gave permission free from the cancer treatment doctor to perform oocyte preservation. 6)Patients who received adequate explanation (both verbal and written) and provided informed consent.

Exclusion criteria

Exclusion criteria: Patients determined to be unsuitable for safe oocyte cryopreservation.

Design outcomes

Primary

Measure	Time frame
Safety of ovarian stimulation, oocyte pick up, and cryopreservation of oocytes.	—

Countries

Japan

Contacts

Public ContactKeiko Mekaru

University of the Ryukyus Graduate School of Medical Science University of the Ryukyus

f041252@med.u-ryukyu.ac.jp098-895-3331

Outcome results

None listed

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