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Verification of the clinical usefulness and the safety of the treatment of azoospermic men using round spermatids.

Verification of the clinical usefulness and the safety of the treatment of azoospermic men using round spermatids. - Verification of the clinical usefulness and the safety of the treatment of azoospermic men using round spermatids.

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000006117
Enrollment
100
Registered
2011-08-08
Start date
2011-09-01
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

Azoospermia

Interventions

Round spermatid injection into the oocyte is performed in much the same way as that with using elongating spermatids.

Sponsors

Saint Mother Clinic
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: The patients who had consented to participate in this treatment and satisfied the following conditions. 1. The round spermatid is the most advanced spermatogenic cell. 2. Testicular spermatozoa are dead, have head anomalies or the elongating and elongated spermatids are degenerative.

Exclusion criteria

Exclusion criteria: 1. In the case when quite a few spermatozoa have been found even if no spermatozoa were observed in frequent analysis. 2. In the case when the possibility of obtaining round spermatids is near zero. 3. In the case when the surgical procedure for round spermatid collection is likely to deteriorate the patient's health.

Design outcomes

Primary

MeasureTime frame
the pregnancy rate per cycles and miscarriage rate

Secondary

MeasureTime frame
Birth rate

Countries

Japan

Contacts

Public ContactAtsushi Tanaka

Saint Mother Clinic

incho@stmother.com093-601-2000

Outcome results

None listed

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